ELECKTROIMPEX DESCRIPTIVE OF THE IONOSPHERE HEIGHT RECORDER TYPE IRX 5830

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80T00246A007000800002-4
• Release Decision: RIPPUB
• Original Classification: U
• Document Page Count: 73
• Document Creation Date: December 21, 2016
• Document Release Date: April 16, 2009
• Sequence Number: 2
• Publication Date: July 28, 1959
• Content Type: MISC

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The ionosphere height recorder basic equipment
by means of which the radlophysioal characteristics of the
ionosphere are explored all over the world.
The Hungarian made pulse-operated automatic ionosphere
research equipment measures and records by preliminary
programming the height of the various ionosphere layers,
Our ionosphere height recorder has met full satisfac-
tion of the customers and operates already with success on
several places of the world. Owing to its advantageous
technical qualities it was awarded with the
The ionosphere height recorder Type JRX 5830 represents an
advanced stage of development of the earlier type. At design-
ing the later type special consideration has been given to
the recommandations for the International Geophysical Year.
Besides the new station affords a number of facilities to
the personnel of the station unknown in the earlier type.
The equipment comprises the following parts:
The Transmitter operates with impulse-modulation in the 1-20
Mc/s frequency bond without switch-over. In case of automatic
operation its frequency sweep takes about 40 seconds. The
apparatus is also suitable for manual operation.
The Receiver operates on the same frequency range as the
transmitter and their synchron tuning is determined by the
system of mixing. In order to suppress disturbances caused
by broadc9st transmitters, special circuits era provided.
means ray tube over 1 Mc/s and 100 kc/s. Signals are produced b
11 crystal oscillator. I
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1 Indicator ? ? 1 1 - P cathod-ray tubsoo 1 1 with
long afterglow In used ? Instantaneous ? 1 while 1
screen with blue light provided ? purposes ? photo-
graphic recording. 1 I. ? contains / linear time
base ? distance measuring and the circuits producing 1
electronic height The photographic recording camera
Ingo attachable to the Indicator makes time exposures on a oonti-
mark-
ex-
recorded ? + camera the simultaneously with ?
posures,
The operator's Panel cares for the automatic or normal opera-
? 1 ? 1 entire apparatus.
The Supply Units ensure the power supply of the apparatus
? tl ? mains.
desk* The front panel of the programming unit is fitted with
the programming cloak which besides the ? e1 11 ? 1 24-hour dial
provided with signal lamps indicating the times when
programmes have been switched on, and the methods of service
? selected by the operating personnel.
The minute pulses for the control ? the programming
cloak generated ? ' ? ? master clock.
The programming unit further incorporates three receiver
regulating sensitivity knobs enabling ? the way ? remote
control the adjustment of three selected sensitivity values
switched ? ? programme clock at the appropriate time,
recommendation).
is a special signalling device mounted ? _
There
programming to indicate mains failures.
Deflecting Unit. This unit incorporates the deflecting and
voltage supply circuits of the very long afterglow visual
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cathode-ray . with 23 ., diameter. . control signal f
operation the of the . . coaxial cables comin
from the main equipment. I
The frequency determinating element of the equipment I
the variable frequency oscillator (VFC) the frequency of
? ? ?. be varied between M
Mc/s by means of a hand-
or u ? ? ? 1 variable condenser. Mixing its output to ?
30 MO/s signal of an pulse operated oscillator, the neoes-
frequency range ? 1 Mc/s can be achieved. After
amplification ? - signal fed Into the serial. 1
reflected 1-20 Mc/s signal coming ?? from the aerial is mixed
in the receiver by means of the signals of the variable
frequency oscillator producing intermediate frequency of
super-
heterodyne, ? frequency ? ? c second auxiliary oscilla-
tion being 28,6 Mals. ? : 28,6 Mc/s frequency is produced ?
means ? repeatedly doubling the 7,15 Mc/s signal of the
crystal oscillator. The 30 Mc/s signal required for driving
the ? modulated transmitter is also generated ? 11 1
28.6 U _ frequency mixing of a 1,4 Mc/s
gated oscillator. Before to ? ? Into the transmitter ?
resulted 30 Mc/s signal Is filtered and amplified. After
Ohe second mixing receiver ? interme-
diate 1,4 Mc/s ferentiating ? ? video amplifying
1 equipment controlled by a pulse-generator. Its
pulses control the indicator, the transmitter, the frequenc
marker generator and the receiver. In the indicator these
pulses start a saw-tooth generator the output of which is th:
time base of the cathode-ray tubes.
? height indicator comprises pulse oscilla-
tor, signal ? ? ? ? controlling N ? ?
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MI
1 monitor tube deflected horizontally ? . : ; i . the voltage obtained from the rectification of an approx. 20
kols signal. The amplitude of the 20 ko/a signal in varied
? ? capacitive divider running on common s h a f t with the
variable frequency oscillator.
The frequency markers obtained . c o m p a r i n g signals of the variable frequency oscillator with the harmo-
? ?? divider.
kc/s Besides the afore mentioned the transmitter consitBfrom abroaftmd
amplifier too. The last five stages are pulse operated, ?
separate gating I output ? - ? : transmitter is ba-
lanced and the phase inverting I the final stage is occured.
? = u ? equipment Is built in frame ? angle aluminium
bars. Receiver, Indicator, transmitter, operator's panel and
the ? power supply units constitute separate ? - as ? I
in ? illustration. These drawer ? ? units ? 1. on castors
and m a y ? easily removed. Feed voltages and low-frequency
connections are plugged, while high-frequency voltages are
coupled with screwed Amphenol-type connectors. With regard to
I applied high voltages apparatus can be operated only
with doors shut. The control instrument, its switch, the
manual sensitivity control knob, and differentiating circuit
switch are mounted on the front plate of the receiver, The
two cathode-ray tubes and the photographic recorder are placed
? the front plate ? the indicator assembly. The control
knobs of the two cathod-ray tubes, the phase control knob, the
amplitude control ? the saw-tooth, impulse width switch,
the ? - measuring range switch, the km-marker switch, the
km-marking brightness regulator and the change-over switch of
A or B indication types, as well as a control instrument ate
also ? ? there, ? the front plate ? ? transmitter ? ? the ? scale and below somewhat to
? ? used in c9se ? operation,,",
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horizontal To the left from the scale Is the amplitude control of
the control panel there are
the deflection. S. cathode
11 Instruments placed in two rows. The six instruments of
the upper row control the tubes of the transmitter. In the
lower row are two instruments for measuring the the . . .. amplifier, two control instruments
tubes measuring the plate current of all the ment measuring the grid current of the variable frequency
oscillator. Below the instruments are mounted the switches
? ? : control instruments. T h e operating panel contains the
controls for operating the apparatus and for photographic
? the front plate, ? It left to right, fol-
lowing devices are located:
Control instrument ? supply ? with switch, above it
a neon glow lamp indicating the condition of the fuse, the
? button and switch of the frequency s w e e p i n g ? motor. t
means of the : button the ? ? ? missing time signals
can ? : substituted, while the time and date signal in the
indicator ? illuminated with the forthcoming knob. In
case ? manual operation ? : motor of the photographic
re-
corder 1 , ? : started ? t h e knob, after which follows
the knob switching on and off the anode voltages, the bias
voltage 1 _ ? circuit switch, the change-over
switch ? manual ? automatic ? ? ? and, finally, the
mains voltage control instrument. Below, in supply unit No.4.
is the ? control ? correcting the network
supply in case of voltage surges. It can be reached after
opening the doors, when only the network voltage cpntrol
instrument remains under tension.
de-
energized by either interrupting two automatic cutouts
? ? removing connection at the back of the apparatus.
The input connection of the time signal and an earthing
screw are also ? ? here. Transmitter end receiver serial
outlets are mounted ? ? ? of the apparatus. transformers
of the apparatus are placed in air-tight, soldered rietal
housings fitted with ceramic outlets.
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The control desk is built similarly to the main equip-
1 ? 1 1 upper . in . middle . the oper-
ator's there
the right of which Is the . operating ? . and on the left
the program selector. The remote gain control is acoomodated
above right the operating switch. Below It is the adjusting
button ? the three programming sensitivity channels, and to
the right from those the mains voltage measuring instrument.
Under this Instrument there are signalling lamps indicating
the 24 Volt supplies and the cutout of the mains, On the
lert ? _ ? the operator's programming panel, ? m t -.
re-
peated recording : 1 ? below ? brightness regulator of
the .: I ? ? t u b e built in the control desk. The instru-
ment
accomodated below it, the tensions arising on certain points
or the desk. On the right part of the control desk behind
the door, on the front side of the first deflection unit the
focusing and position adjusting IS ? i _ _ ? ? ! ?
ray tube are accomodated.
According to separate 1 right from ? : potentiometres
master ? can ? _ built in. The power supply unit and its
fuses are placed below the deflection unit. The screen of the
/ ? .. ? with ? protecting unbreak-
able shield ? ? ? ? : side ? the desk. On
the ? ? : of the control l i f t i n g up the writing
panel, room is provided for the documentation of the station,
1.) Frequency band: I to 20 Me/s. continuous
without change-over.
2.) Frequency marking: every 1 Mc/s and 100 kc1s
generated by means of a 1 Mc/s
? 1 marker
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3.) Accuracy of the
frequency markers:
5.) Width of the transmitter
?
6.) Pulse repetition
frequency:
7.) Pulse peak output of
transmitter:
the
8.) Sensitivity of the
receiver:
signals are generated by
electronic methods, and ?
appear, beneath the . / . ? : U C
on the screen of the cathod-
ray t u b e . recordings on
film tapes . . L 11 lengths
of 8 centimetres the signals
appear with frequency markers
of 1 Mc/s and 00 kels, at
ionogram lengths of 3 centi-
metres, with frequency markers
of 1 Mc/s.
? ? kc/s
? ? centimetres; date, 11
and stations ? , : are ?
left side of the ionogram.
? of the length of
? ? 1 the film ?
speed, is carried out by means
? the control ? ? ? mounted ? I
the photo register camera,
50 cycles (synchronous with the
mains, may be shifted in phase).
16-4 kW depends of frequency,
measured on a 2 x 400 ohm dummy
antenna.
10 /aV on balanced input at
signgl-to-mine ratio 3 to 1.
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This value is obtained for the
receiver without input filter.
? Bandwidth of the
receiver: appr. 24 kols between the 3 .:
gain .. points.
10-) Selectivity of the
receiver: i decibels i
tiOn from the nominal frequen-
cy.
Note: the values of 9. and 10.
are valid for a 100 /AV input
signal.
adjustable to 300-800-1400
kilometres,
12.) Height marking: at every 50 or 100 kilomet a
13.) Accuracy of height
i'
H denotes the height of obser-
vation.
Automatic records according to
follow-
ing programming:
1) at the 60th minute of every
hour
2) at the 59 th I 60t h , 01 at
minute of every hour
3) at the ? ? Oth minute of
every hour
4) at the ? ? 60t h
? at minute of every )iour
5) at the 15 th t
9th, 60t h 1 01 St minute of
every hour
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6) at the r
59th, 60th, 01st minute of
minute every hour
7) at every 5 th ?
every hour
8) at every 5 th minute and
the ?
minute ?
every hour
? at every minute of every
hour. Recording at the 59 th
minute place at re-
duced gain, the Olst
minute maximum gain, as
? ? in ?
re-
commendation. Programming
of the equipment is effected
? 1 1 the control desi. ?
signalling clock built-in
the control desk signals the
time position ? the auto-
matic simult-
aneously the time. Change-
over ? programming also
takes ? ? 11 the control
desk.
? of time: besides and frequency,
hour and minute are recorded on
the ? ionogram autolatically, date
and the name of the station
manually. Adjusting the master
? properly ? ob-
tained with assurance that on
course of recording the times
signal ? ? correspond with
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the 3 Mc/s frequency on the
...? : n.
16.) Sweep time of the
ionogram: appr. 40 seconds.
both transmitter and receiver
ba-
lanced
radiating
vertically broadband aerials, the real
resistance being ? ? ohms,
? the ? c the change-over ? ? c transmitter
antennae when the ionogram posses 6 Mc/s frequency. The
frequency of change-over may be varied.
19.) Reading of the principal
parameters of the iono-
.: ? two cathod-ray
tubes a third one has been
provided for this purpose in
the ? control desk.
This is a very long afterglow
tube with 23 u screen dia-
meter.
The obtainable picture has a
size ? ? ? ? centimetres.
The ? c screen mounted
nearly in the horizontal
? _ and the screen level is
approximately at the usual
height ? ? board.
special protective glass slab
covers the screen of the
cathod-ray tube. ? c
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appear frequency markers on the
visual ? height
. the .. ? m
receiver: 20.) Input of the The receiver is provided with a
low-pass filter attenuating all
frequencies exceeding 20 Me/a.
One
member of this filter is
tuned
? :. .: ?
frequency mentioned above
filtered out.
21.) Aerial current
signalling:
Two signalling lamps are in-
the
lamps
transmitter serial. The signal the output current. If
current the exact value of the aerial
required, cur-
rent may be n : . . con-
necting the
meter of the dummy
antenna
to the transmitter
output.
22.) Realibility: When the station has been set
for the five minute programm-
and after 48 hours of
service the electrical para-
meters ?. change, ..
the assemblies warm' . to
temperatures which exceed the
guaranteed value* Unless
otherwise specified by the
manufacturing firm the ?
rature of the component parts
cannot exceed the 9mbient
temperature . more then 315
degrees centigrhde.
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230 Power supply unit: The station operates from 220
?
single-
phase ? ? ? ? 240 volts
? : be ? ? ? . 1 - . ? ? means ?
a manually operated nine-posi-
?? switch, The 220 ?
supply voltage is indicated ?
? ? voltmeter. Total
power consumption of the sta-
? including ? control
To assure in case ? mains
cutout the undisturbed opera-
tion of the Ionosphere Height
Recorder's signalling system
it is necessary to apply a 24
volt d.c. spare supply. I
24.) Mains failWres are indicated by a signalling lamp
mounted on the control desk.
25.) Clime conditions: The station operates within
and +35 degrees : ?
Errors and frequency
indication vary according to
the temperature coefficient.
Storing temperature ? 1
equipment cannot exceed -35
? centigrsde. After stor-
ing, before putting In service
the equipment has to be dried
at an ambient temperature ?
? degrees centigrade and a
relative humidity of 75 ?
? twenty four hours.
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J26,) Humidity test:
When operated at a relative
humidity of 90 per cent dur-
ing 48 hours no error should
occur in the adjustment of
the five-minute program.
.27.) Dimensions and weight: main equipment
194 x 115 x 84 am
685 kg.
control desk
115 x 0? s. ?
190 kg.
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CHARGING EQUIPMENT FOR SUBSIDIARY STORAGE
BATTERIES, OF-POW ER PLAN,T,S
Series ESA
Application
The battery charging equipment of the ESA series has been designed for charging of floating sub-
sidiary storage batteries of, power plants. The chargers of this series, operating at 110 or 220 V rated
voltages, are suitable for lead accumulators including 55 or 110 cells. Buick charging is hand controlled,
floating is automatically controlled with the battery 'voltage varying in proportion of the regulating accuracy
'at a load change of 30 and'100 per cent
The equipment is operated from a three phase 50 cycles mains of 3 x' 380 V. There is a series
transformer to be used with mains voltages of other ratings. Mains current reaches the primary of
the three-phase two-winding mains transformer through the primary fuses, the, mains switch, and the
regulating transducers.
The transformer secondary feeds the selenium rectifier in three-phase bridge circuit
Direct voltage and current are measured by suitable moving coil instruments. The d. c. circuits
are protected by fuses.
A separate auxiliary rectifier supplies the excitation current for regulating the transducers, by
variations of the produced current. During 'the charging process, while the equipment hand controlled
the current of 'the auxiliary rectifier !is adjusted by resistances, cut in the circuit by means of a rotary
switch. During operation with automatic voltage control the exciter current of the transducers is influenced
by the regulator in such.a..way that the battery tension remains within the voltage-margins, conforming
to the accuracy of regulation. In case of a mains failure the voltage monitoring circuit disconnects the
equipment from mains. Simultaneously there are acoustic and visual alarm signals. The acoustic signals
can be silenced by throwing a key, whereafter both the acoustic and the visual reappear as soon as
the mains voltage has returned. When having silenced- the- acoustic signal -oncemorewith' the key, the
-equipment can be reconnected to the mains,by hand.
The arrival of the regulator in one final position or in the other is indicated again by acoustic
and visual signals. Such a case can be produced, among many others, by a sudden and permanent
slight load or by a steady loading current exceeding the rated value etc.
The equipment is housed in a floor-type sheet-iron cabinet mounted on a frame, from section iron.
The frontplate serves as instrument and operation board. The side panels are detachable. At the rear
the cabinet is open. Here are the connecting terminals, arranged on a suitable terminal strip.
683/101
K
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Adva'ntag es
The rr, ost irr, portant advantage of the equipm ent is its suitability for both charging and floating.
With automatic regulation the battery voltage can be kept at about 245 to 2,2 V, the most favourable cell
voltage. This largely increases the service life of the storage battery, without damage to the accumulator
plates and without capacity losses to the charged battery. Under such conditions the whole of the consumer
current is supplied by the rectifier, with none coming from the battery. On the contrary, the battery is
under trickle-charge. ..
Another outstanding feature is that the accuracy of the built-in voltage regulator is independent
of the mains frequency or its variations. Consequently direct voltage is uninfluenced by occasional mains
frequency fluctuations. The equipment. operates with high efficiency. The cell voltage being steadily kept
at 2?15 to 12 V, the storage battery must never be used for discharging operation. The equipment operates
without wire. It includes no moving or rotary components and can safely be operated even without
attendance,
683/101
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M_OT.OR-CAR STARTER RECTIFIERS
Series IE
Application
Motor car starter rectifiers of the series IE have been designed for starting motor-oars,.trucls'
and other petrol or Diesel-engine driven vehicles. Connected in parallel to the car battery. the smaller
type is suitable for vehicles with 6 or '12 V st8rters, the large one for those with 6, 12 or 24 V starters,
D e s, c,.r i,p t i o n
The motor-car starter rectifier can be operated from three ph4se50 'cycles mains of 3380 and
3 x 220, or of 3 x 190 and 3'x 11O V respectively.
Adjustment to the actual mains voltage is from the terminal 'strip of the mains transformer.
Mains voltage reaches the primary of the three-phase two-winding mains transformer through
the protecting fuse's and through a mains switch. The secondary feeds the three-phase selenium rectifier
to bridge-connection.
There are tappings on the secondary of the mains transformer for adjusting the direct voltage
in accordance with the starter voltage by means of a multiposition switch.
A switch in the Cc. circuit serves for connecting the starter rectifier to the motorcar starter,.
This switch can be operated by a push-button, provided that the motorcar starter has been connected
with correct polarity. In the contrary case the switch fails'to operate.
When starting the motor-car, the rectifier, connected in parallel with the storage battery, takes
over a considerable part of the load.
The starter rectifier housed in a convenient sheet-iron cabinet, rests on a handled angle-iron
frame which can be wheeled on sett-adjusting castors. The operation board, arranged under a hinged
inclined cover, accommodates the mains switch, the rotary switches, the starter knob, the fuses and
signal lamp for indicating the operation.
A d.,v. a n t a g e 's
The most significant feature of the starter rectifier is, that it not only disposes of all starting
problems of motor-cars, but prevents a premature destruction of the storage batteries. During ignition
the sudden and heavy surge currents (of thousand A order) have been overstressing the battery, while
Ii 83/9 9
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the considerable load has reduced the battery voltage to a degree no more sufficient for turning round
the starter: sy they use of the starter rectifier the storage battery -hardly. participates Cif at ell) in the
ignition process, all the required' power being-supplied by. the mains. A -further advantage is that.the
voltage does not, even under heavy load, drop below the. rate required by the starter for. turning around.
The switch in the d. c. circuit prevents the starter to be. connected with wrong polarity and the
storage 'battery to be damaged thereby, in case of such disorder as the rectifier equipment will fail
not to respond to the pressure of the starter knob.
The starter rectifier can economically be used in garages and auto-car yards. Owing to its small
size, it can readily be wheeled amidst car rows and started without the least difficulty..
Mains-
Switch-over to
Stabilized
Dim e n s on s W.Pioht
Type
voltage
a ow
starter voltages
of
amperage
fppr igmtiQQn
Length
Width
Height
(approx.)
V
V
A
mm
mm
mm
kg
3xiio
3x190
IE .
3 i,220
6-12
:250
1000
450
1005
12/250
3 x 380
3x110
3'x 190
IE
or
6-12-24
400
1835
655
'1110
24/400
3 K 220
3x380
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CHARGING EQUIPME_NT FOR STORAGE BATTERIES USED
IN.... EMERG,ENCY LIGHTING PLANTS
Series OT
Application
Storage battery chargers of the OT-series have been designed for charging lead accumulators
of 55 or 110 cells with a current of specified rate, or for trickle.charging formerly charged batteries
w hen out of service.
The equipment is suitable to be employed mainly for emergency lighting plants used in theatres,
cinemas etc. Rather rarely and for short periods as such plants are required to operate, they must
always be kept in charged state ready whenever to perform duty.
The chargers are suitable`tor both quick-charging and trickle charging.
Description
Essentially the storage battery charger includes:
a) a quick-charger circuit and
b) a trickle-charger circuit.
The quick-charger circuit is fed from a three-phase 50 cycles a. c. mains of 3x.480 or 3 x 190 V.
Adjustment to the actual mains voltage is on the terminal strip of the mains transformer.. Mains voltage
reaches the transformer primary through the primary fuse and the magnetic mains switch. The three
phase mains transformer has two windings for the required transformer ratio. The secondary is fitted
with tappings, coupled to the terminals of a rotary switch for the charging current to be controlled.
The secondary of the mains transformer feeds a three-phase selenium rectifier in bridge connection.
0.1c. voltage and current are measured by a suitable moving-coil instrument. The d, c, circuits
are protected by fuses. By means of the quick--charger circuit the batteries can be charged up to the
voltage peak. When approaching the peak, the charging current diminishes in consequence of the battery
voltage in the usual manner of rectifier'-
A charged battery while not under load is apt to loose part of its capacity owing to self--discharge
To prevent it, such a battery is subjected to trickle-charging with a current rated 1 to 15 mA for each
ampere-hour of its capacity, equivalent to a 2.15 to 2.2 V cell voltage of the charged battery. It is for
this purpose that the trickle-charger circuit of the OT-type equipment is used. As soon as quickcharg
6.83/98
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ing of the batteries has been completed, the equipment is switched over to trickle-charging. This is done
by actuating a switch with a pilot lamp indicating the commutation. Theti1citle-charging. current isadjust
ed. coarsely from the terminal strip of the trickle-charger transformer and tingly by means of a con-
tinuously variable rheostats
The trickle-charger transformer is a low-power single-phase transformer with two windings,
feeding a single-phase selenium rectifier in bridge connection.
'The trickle-charger circuit, arranged on a separate chassis is easy to access and'to handle.
The equipment is housed in a floor type sheet iron cabinet with an angle-iron frame. The front
plate of the cabinet is made to serve as instrument and operation board, accommodating the indicator
instruments, the step switch, the mains switch also controlling the quick-and trickle-charger circuits;
the fuses and the signal lam p.
The side plates provided with ventilation holes are detachable, At the rear the cabinet is open.
Here are the clamp terminals for the mains current and the direct current connection.
Advantages
The OT series of equipment have the signal feature of being suitable for 4uick-and trickle-charging
as well and of readily and conveniently allowing themselves to be switched over from one kind of service
to the other by the turn of a switch.
Regulation by varying the mains transformer with a rotary switch does not involve any loss.
To protect its contacts, the rotary switch is actuated in currentless state. There is a special circuit
to cut out the magnetic switch for the switch-over time Thus the usual scorching faults by arc for-
mation during the switch-over period are safely eliminated.
Even when under partial load the equipment has a favourable efficiency. It includes no moving
or rotating components. Operation is noiseless and perfectly clean. The charger requires neither maintenance
nor attendance, a feature particularly favorable for prolonged trickle-charging.
683/98
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
SMALL
ACCUMULATOR CHARGER
TYPE TT
488/2504
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
APPLICATION
The TT type charging equipment is designed for ;,b.-girjz '-
cell /accordingly 6 V/ lead accumulator3. Accordingly it
can be used with accumulators for light cars, motorcycles,
battery-type wireless receivers, hand lamps, etc.
DESCRIPTION
The equipment is fed from a 110 or 220 V 50 cycles single-
phase mains. The initial charging current intensit:r of ap-
prox. 1 A ./accumulators of 6 - 10 All capacity/ decreases
in course of the charging process in proportion with the
growing accumulator voltage.
The equipment is housed in a metal or a plastic cabinet
fitted with removable lid. Arranged.on the base plate are
the two-coiled transformer, the selenium element in push-
pull circuit and the D.C. terminals. The transformer is
adjusted to the actual mains voltage by means of the accord-
ingly marked screws on.the base plate.
ADVANTAGES
Operating from the ordinary lighting mains, the equipment
requires no connection to a power network. Mains and ac-
cumulator connections are ; simply, established by a fork plug
and by terminals with insulated heads respectively. The
charging current needs no'separate adjustment as the equip-
mont, once switched on, operates entirely by itself. It
charges an accumulator of approx-.-6.;Ah capacity overnight,
i.e. in 8 to 10 hours. Larger accumulators take proportion-
ally more time. The equipment requires small space and is
stress-resistant.
Type
Number
Accumu-
Max.
Max. measurements mm
Weight
of
later
charging
height _
.w ep
kg
cells
voltage
currex}t
V
A.
TT 6/1
3
6
1
80
100 1CO
0.8
Measurements vary according to design..
_.O
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
r ar c aooaP~~
MUNCARIAN TRADING COMPANY FOR ELECTRICAL
GOODS AND PRECISION INSTRUMENTS
lntm: hlui st all PSI l
Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
 Approved For Release 2009/04/16: CIA-RDP80TOO246AO07000800002-4
ACCUMULATOR CHARGERS
FOR SMALL
TELEPHONE EXCHANGES
TYPE IF
483/?50?
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
APPLICATION
The TF type accumulator chargers serve for the quick or the
buffer charging of 12 or 24-cell /accordingly of 24 or 48 V/
lead accumulators with the tabulated initial amperages.
used primarily for the buffer-type current supply of smaller
telephone exchanges and repeater stations, the chargers will
perform duty wherever smoothened /filtered/ D.C. of 24 or
48 V is required.
DESCRIPTION
The equipment is fed from a 110 or 220 V 50 cycles single-
phase mains. The transformer is adjusted to the actual mains
voltage from the terminal strip.
The mains current, passing the primary fuses and the mains
switch, is led to the primary winding of the double-coiled
transformer. The secondary tappings are conducted to a step-
switch which, in case of quick charging, controls the charg-
ing current intensity or, in case of buffer charging, the
amperage required by the consumer in action.
The equipment is switched over from one type of operation
to the other by means of the mains switch. A choke coil,
cut out from the D.C. circuit in case of quick charging, smoothens
the buffer current to such a degree that the remaining rip-
ple does not interfere with the telephone service.
An increase of the accumulator voltage in case of quick
charging results in the usual reduction of the initial' charg-
ing current intensity. The charging current can be reset by
means of the step-switch. When, with the step-switch in max-
imum position, the cell voltage has reached approx. 2.7 V,
about half the initial current intensity can still be ad-
justed.
Selenium rectifiers connected in single-phase bridge circuit
care for rectification.
Direct voltage and current read on a moving-coil voltmeter
and amperemeter respectively. The D.C. part of the apparatus
is secured by melting fuses.
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
The chargers are housed in grey or silver-blue varnished
sheet-iron cabinets; the smaller types are designed to be
mounted on the wall, the larger ones to stand on the floor.
Ventilating apertures on the removable side plates care for
the necessary air-flow. The floor-type equipment is open at
the rear.
The instrument and control board, occupying the entire front
of both types, includes the mains and D.C. fuses, the mains
switch, the step-switch and the instruments. Maine and D.C.
connections are established on top of the wall-design and
at the rear of the floor-design.
ADVANTAGES
The losefree adjustment by altering the transformer tappings
results in high efficiency of the equipment. In buffer oper-
ation the charging current is adjustable according to the
average consumption by means of a 7 or a 10-position step
switch.
The equipment is readily switched over from quick to buffer
operation by the throwing of a single switch.
Type
Design
Number
of
ll
Accumu-
lator
Initial
charging
Max. measurements
mm
Weight
kg
ce
s
voltage
current
height
width
depth
V
A
TF 24/1
Wall design
12
24
1
320
275
200
3.5
TF 24/3
12
24
3
370
315
200
6
TF 24/6
12
24
6
420
365
240
9.5
2F 24/10
" "
12
24
10
420
365
300
25
TF 24/20
Floor design
12
24
20
992
450
400
60
TF 24/30
" "
12
24
30
992
450
400
80
TF 48/3
Wall design
24
48
3
420
365
24C
10
TF 48/6
24
48
6
420
365
300
22
TF 48/10
"
24
48
10
520
415
'320
55
TF 48/15
Floor design
24
48
15
992
450
400
75
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
RIINI!I1RIIIN TRADING COMPANY FOR ELECTRICAL
GOODS AND PRECISION INSTRUMENTS
a Sy. Letters: Budapest 801, P.O.B. 8.
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
UNIVERSAL
ACCUMULATOR CHARGERS
TYPE UT
483/2502
Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
AF?LICATION
The UT type rectifiers serve for charging 3, 6 or 12-cell
/respectively 6, 12 or 24 V/ lead accumulators with the tab-
ulated initial amperages. Accordingly they can be used in
garages, vehicle yards and repair shops for charging accu-
mulators of various voltages and ampere-hour capacities.
DESCRIPTION
The equipment is fed from a 110 or 220 V 50 cycles single-
phase mains. The transformer is adjusted to the actual mains
voltage from the terminal strip.
The mains current, passing the primary fuses and the mains
switch, is led to the primary winding of the double-coiled
transformer. The secondary tappings are conducted to a step-
switch. One of the incorporated step-switches serves for
setting the accumulator charging voltage in steps of 6, 12
or 24 V, the other for adjusting the charging current in-
tensity in seven steps. Au increase of the accumulator volt-
age results in the usnal,reduction of the tabulated initial
charging current 'intensity. The charging current can be re-
set by means of the seven-.:step switch.
When, with the step-ewitoh in maximum position, the cell
voltage has reached..approi. 2.7 V, about half the initial
current intensity cin-s'ti.11 be adjusted.
Direct current and vol'tage.,measurement is by moving-coil
ampere end voltmetere.'The D.C. part of the apparatus is
secured by melting fuse?i.
Selenium rectifiers connected in single-phase bridge circuit
care for rectification.;:''.
The rectifiers are housed in a grey or a silver-bluevar-
nished sheet-iron cabinet; the smaller types are designed
to be mounted on the wall, the larger ones to stand on the
floor. Ventilating apertures on the removable side plates
care for the necessary air-flow. The floor-type equipment
is open at the rear. The instrument and control board, oc-
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
cupying the entire front of rcth types, include; tho
and the D.C. fuses, the main switch, the step switc^ez 'n,
the measuring instruments.
Maine and accumulator connections ire established over ac-
cordingly marked terminals or top of the wall design and at,
the rear of the floor design.
ADVANTAGES
The universal apparatus is equally suited for accumulators
of 6, 12 and 21 V and cen be simply switched over with a
commutator. The charging current is adjustable in fine stepo
without lose.
Operation is silent; rectification begins immediately after
the switching. Thanks to its simple construction, the equip-
ment required practically no attendance.
Type
Design
Number
of
Accumu-
lator
Initial
chargini,
Max. measurements
mm
Weight
kg
cells
voltage
current
h
th
V
A
heig
width
-deP
UT 24/1
Wall design
3-6-12
6-12-24
1
320
275
200,
3
UT 24/3
" "
3-6-12
6-12-24
3
370
315
200
4.5
UT 24/6
3-6-12
6-12-24
6
420
365
240
8
UT 24/10
3-6-12
6-12-24
10
420
365
240
22
DT 24/20
Floor does
3-6-12
6-12-24
20
992
.450
350
58
483/2502 -3
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
L
HUNGARIAN TRADING COMPANY FOR ELECTRICAL Fj~
GOODS AND PRECISION INSTRUMENTS
LUttsn: hds"al sn, P.B.D. 0.
Rider oy.
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 Approved For Release 2009/04/16: CIA-RDP80TOO246AO07000800002-4
REGULATING TRANSFORMERS
TYPE S AND SI
4832508
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
AkILICATION
The regulating. transformers have been evolved for the-pur-
pose for adjusting alternating-voltage mains supply in la-
boratories, assay rooms, industrial plants, for the voltage
adjustment of cinema and theatre lighting equipment andlnao
forth.
DESCRIPTION
Up to 1000 V outputs the equipment is similar in design to
a ring-type automobile transformer. The wire section within
the track of the roll-type collector is bare. The carbon
roll of the collector is mounted on a fixing bridge which
runs in a metal bearing and permits of being turned around
during adjustment. A pressure-spring holds the collector
roll against the wire, thus caring for continuous safe con-
tact in any position. The current flows from the collector
roll through a flexible spiral conductor to the terminal
strip of the regulating transformer.
The regulating transformer of vertical shaft arrangement
is mounted in a sheet-iron base plate fitted with rubber
feet. On the transformer jacket there are ventilating aper-
tures. A circular dial below the control knob serves to in-
dicate the approximate adjusted voltage rate.
Above 1000 VA outputs the equipment is similar in design to
a core-type automobile transformer. The tappings of the
single turns are conducted to a special step-switch along
the segments of which glides a silvered metal roll. A pres-
sure-spring cares. for the safe contact of the. collector.
Suitably dimensioned impedances limit the current arising
in the turns, short-circuited by the metal roll.
With its shafts arranged vertically, the regulating trans-
former is housed in a silver-blue varnished sheet-iron cabi-
net.
Both types are fitted with terminals for the mains inlet
and the conductors of the regulated voltage.
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
ADVANTAGES
The regulating transformers combine high efficiency of regu-
lation with simple and convenient handling, sturdy construc-
tion and dependable operation. Regulation, unlike in the re-
sistance-type equipment, requires no power and dispenses
with heat generation noxious to the transformer and its sur-
roundings.
Type
Mains Regulated
Load
capacity
Output
Max. measurements
mm
Weight
kg
voltage
V
A
kVA
height
width
depth
S 250/500
220
0 - 250
2.3
0.5
150
250
15
S 250/1000
220
0 - 250
4.5
1
170
270
20
31 3 E
220
0 - 235
13
3
31 6 E
220
0 - 235
25
6
700
500
400
55
SII 8 H
3x380
3x0 - 400
25
18
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
220 V
0 -250Y
Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
HUNGARIAN TRADING COMPANY FOR ELECTRICAL
-GOODS AND PRECISION INSTRUMENTS
Letters: Budapest 501, P.O.B. B. Telegrams: ELEp1B0 Budapest
Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
TYPE 6F
RECTIFIER. CUBICLE
FOR
PLATING PURPOSES
.898/48
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
application
GF-type rectifier cubicles, designed to provide cur-
rent for electrochemical tanks and platting baths,
can be applied whereever low voltages and hightcur.-
rent-intensities are required.
Description
The cubicle is operated from a three-phase 50 cycles
-mains of 3x380 V. Nominal currents and voltages are
given in the table below.
The rains current passes through the primary fuses
and mains switch into a preliminary transformer pro-
vided for coarse-step regulation. To this end the
tappings of this transformer are connected to a ro-
tary switch by means of which the voltage impressed
to the main transformer can be adjusted.Fine-step
adjustment is facilitated by the tappings of the pri-
mary winding of the main transformer, these being
connected, similarly to the tappings of the prelimi-
nary transformer, to a rotary switch. Regulation is
thus performed in 4y. steps within the given voltage
range.
'The main transformer is a three-phase transformer of
suitable transformer ratio provided with two windings
The star-connected secondary of the transformer supp-
lies the current for the selenium rectifier network.
Rectification is performed by a three-phase selenium
rectifier bridge circuit.
Moving coil instruments are provided for measuring
d.c. current and voltage.
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
During regulation, the rotary switch contacts carry
no current while switching takes place, the exciting
circuit of the magnetic mains switch being broken:-by
the locking mechanism of the rotary switch already
at the beginning of the switching.
With loads lower than the rated current, d.c. voltage
will increase due to the characteristics of the sele-
nium rectifier.
The equipment, mounted on a section-iron frame, is
housed in a cubicle finished in gray or silverblue
supported by the platform. With higher performances
/exceeding 500 A/ efficient cooling is secured by
means of a separate cooling-apparatus. The hot air
should be guides oft through a pipe leading to a
round opening on the top plate of the equipment.
The side and rear covering plates can be removed=
the rear of types provided with no fan is open.
The front plate is used as an operation and instru-
ment board accomodating the fuses of the equipment
and of the fan circuits, the mains switch, the rota-
ry switches and the metering, instruments.
The equipment should be installed in dust-free premi-
ses.
Advantages
The most significant advantage of the equipment `:rs
loss-free regulation within the rectifier. Thanks to
the fine-regulation, bath resistance can be much
lower than usual, only voltage differences in the
tappings having to be bridged by the bath resistance.
683/48
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
A further advantage is that switching takes place
under no-current conditions. Sparks during switch-
ing are thus eliminated and the service life of the
rotary switch considerably increased.
The equipment is of sturdy, hard-wearing construc-
tion, its service life under normal operating con-
ditions far extends that of rotary rectifiers.
Type
D.C. ratings
Dimensions
Weight
Voltage
Current
Heights! Widt-pi Dept h
v
A
mm
GF 3-15/100
3-15
100
1192
850
500
250
GF 3-15/250
3-15
250
1592
800
700
350
GF 3-15/500
3-15
500
1950
800
850
450
GF 3-15/1000
3-15
1000
2150
1200
200
600
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 Approved For Release 2009/04/16: CIA-RDP80T00246A007000800002-4
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
ELEKTROIMPEX
Hungarian Trading Company
For Electrical Goods and Precision Instruments
Letters: Budapest 62, P.O.B. 296. Telegrams: ELEKTRO Budapest
k: Veto.. P.
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
CURRENT SUPPLY UNITS
FOR TELEPHONE EXCHANGES
TYPE PK
483/2506
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
The Pa type accumulator charging equipment serves for the
D.O. supply of large, acoumulator-fed units, such as tele-
phone exchanges, repeater stations. and similar plante.Ihe
type of current supply varies according to the electrical
arrangement and the kind of service of the accumulator and
the rectifier.
The most contemporary equipment is, the buffer-operated drip-
charger with automatic voltage regulation for serving one or
two batteries. In single-battery service the charger,'the
accumulator and the consumer are constantly coupled in paral-
lel. With the cell voltage permanently kept at 2.15 to 2.25
V by the automatic voltage control, the conservation current,
just.inteneive enough to make up for the self-discharge lose,
flops across the fully charged accumulator. The rectifier
_
solely supplies the consumer current.
She. accumulator consists of 23 stock oille and, generally,
of 3 spare cells. Under normal service conditions the con-
saner is connected in parallel with the 23?celle. In case
of a mains failure, voltage regulation ceases and the cur-
rent supply of the consumer is taken over by the accumula-
tor. The cell voltage drops before long to 2 V, and later
below. to keep the consumer voltage at approx. 48 V, the
spare cello are linked to the stock cells. The moment the
mains voltage returns, the spare cells are out out, and
parallel connection of the 23 stock cello -with the con-
so-ea is reestablished. A control switch, with different
functions In each position, performs all. these switchings.
In two-battery-service it switches the batteries either to
charging or to discharging and links the spare cells to
them.
DESCRIPTION
the current supply units are fed from a 3 r 380 or a 3 x
190 V 50 cycles three-phase mains.-In ease of other volt-
ages a' series transformer is built into the equipment.
The mains current, passing the.primary fusee and the Maine
switch,_as well as the fuses and the switch of the rectifier
483/2506 - 2 -
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
circuit, is led to the primary winding of the double-coiled
rectifier. transformer. The transformer primary in delta-con-
nection includes the regulating transducers. The secondary
feeds the selenium rectifier arranged in three-phase bridge-
circuit. A choke coil cares for the smoothening of the D.C.
ripple in an adequate degree to render the telephone. service
unimpaired by the remaining A.C. component of about 2 psopho-
metric millivolts. The charger is linked to the accumulators
over the mentioned control switch, performing by a single.
commutation all operations and switchings necessary for the
power supply, of the telephone exchange, without interrupt-
ing the current. .
In case of charging, the equipment can be switched'over from
automatic to hand-operated voltage control. Regulation in
either case is through transducers by a voltage-sensitive
device which, at fluctuations of ? 10 per cent in the mains
voltage and 30 to 100 per cent in the rated current, holds
the cell voltage of the batteries at 2.15 V with an accura-
cy of ? 1.5 per cent. Cycle variations do not impair the
exactitude of the.device.
The equipment incorporates'a separate circuit with switch-
over facility for charging the spare cells one by one. A
hand-operated step switch cares for regulation.
In case of a failure in the mains supply or in one.of the
phases the voltage-sensitive device interrupts the circuit,
simultaneously announcing the trouble by acoustic and lumin-
ous signals. Stopped by the throwing of a switch, the signals
are made ready to recur, announcing this time the recovery
of the mains supply oi of the failing phase. Hereupon they
can be stopped again with the former switch.
Similar acoustic and luminous signals indicate the melting
of a fuse in the consumer circuit.
A moving-coil type ammeter with switch-over facility and a
separate ammeter of the Same type care for current measure-
.ment in the stock -'rd the spare-cell charger and in the con-
surer circuit respectively. The moving-coil voltmeter for
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 t
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tension measurement can be switched over to the main char-
ger, the 23 stock cells or the 26 total'colls of either
battery, the consumer circuit or to any perticular spare
On request the equipment can be fitted with a powerfully
filtered 60 V, 0.1 A single-pht.se measuring circuit.
The equipment, mounted on a section-iron frame, is housed
in a sheet-iron cabinet, designed to stead on the floor
and varnished in silver-blue. or in any desired- colour. The
front plate includes the instrument and switchboard., the side
plates-are-removable, the rear of the equipment is open.
wine and F.C. connections are established over an accord-
ingly marked terminal board.
ADVANTAGES'
The equipment keeps the battery cells constantly at 2.15 V,
an optimum voltage for securing the accumulator a long serv-
ice life without detriment to the plates or lose of capacity.
The buffer-operated drip-charging equipment with automatic
voltage control reduces the self-discharge lose, as the ac-
cumulator, not taxed by the consumer, is traversed only by
the conservation current, and fed solely from the rectifier.
Hence no lose impairs the efficiency of the accumulator.
Cycle variation.has,no influence on the accuracy of the ad-
justment.. '
A single device, the control switch, performs all switching
operations, securing easy handling and excluding.erroneous
settings. In two-battery service, for instance, a single
throwing of the switch suffices to changeover from?charg-
ing .the 23 stock and the 3 spare-cells of battery 1 and dis-
charging the-corresponding cells,of battery 2 to discharging
battery 1 And charging battery 2.,
Running entirely silently and having no rotating parts, the
equipment requires relatively little space. It is.ready for
service immediately after switching and requires' no attend-
ance during operation.
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
Type Number o f Rated Kai. max. measurements mm. Weight
Celle accums- charging
I
ncIy1~~ ?? "~"
later current
..
voltage A
K 50/20 23 stock 48 20. 1740 1200 600 200
3 spare-
Celle
B 50/40 48 1942 1500, 700 3w
4e 60 1942 1500 700
50/60
K
1942 IW 700
50/100
0
483/250" 6 48 100
_.5._...,.
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P
F
F'
I'.
 Approved For Release 2009/04/16: CIA-RDP80TOO246AO07000800002-4
~a~a~aoo~p~~
:~?
NUNGARIAN TRADING COMPANY FOR ELECTRICAL
GOODS AND 'PRECISION INSTRUMENTS
Letters: Budapest 501, P.O.& 8. Telegrams: ELERTRO Iedape I
Flt:Feacr 8y.
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 Approved For Release 2009/04/16: CIA-RDP80TOO246AO07000800002-4
RECTIFIER EQUIPMENT
FOR MOVING- PICTURE SERVICE
483,:'2509
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AALIC ATION
Designed for performing duty in moving-picture establish-
ments are the following rectifier installations:
a/ Type SD for feeding the projection arc lamp
b/ Type %H for heating the sound lamp
c/ Tyyppe KT for the emergency lighting of the auditorium
and for charging the emergency lighting accumulator
d/ Type KR for feeding the excitation coil of the relay
closing the projection window between the cabinet
and the auditorium
Dl.:SCRIFTION
Type KD
The rectifier, supplying current for pure-carbon /standard/
or Beck-carbon type projection are lamps, can be fed from a
3 x 110, 3 x 190, 3 x 220 or 3 x 380 V 50 cycles three-phase
mains. The transformer is adjusted to the actual current
from the terminal strip.
The mains current, passing the primary fuses and the mains
switch, is led to the primary winding of the double-coiled
three-phase transformer. The secondary is arranged in star
connection, with the system including the regulating trans-
~.:cers. These are pre-magnetized with a separate small sub-
sidiary rectifier. Intercalated in the pre-magnetization
circuit and connected to the step-switch is a multi-tapped
resistance. The step-switch controls the exciter current
and, by its intermediary, the alternating current flowing
through the transducers. The range of control is wide
enough to allow for the use of standard and Beck-type car-
bons without commutation.
Selenium rectifiers connected in three-phase bridge circuit
care for rectification.
.Direct voltage and current read on a moving-coil voltmeter
and amperemeter resxectively.
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
The equipment, mounted ona_aeetion-iron frame, is housed
in.a.sheet-iron cabinet`desipned to stand on the floor and
varnished in silver-blueaor.ln any desired colour. The in-
strument and owitcfbohrd, occupying the front plate, in-
cludes the measuring instruments, the mains switch, the
step-a,oitch for controlling the transducer excitation and
the fuses. The aide plates are removable, the rear of the
equipment is open.
Type
Idling
Rated
Max. measurements mm
Weight
direct
volt,*.e
D.C.
height
width
depth
kg
V
A
1.D 75/35
90
35
1142
650
500
180
::D 75/50
90
50
1342
800
550
250
Type KH
The KR type rectifier serves for the heating of sound lamps.
The equipment is fed from a 110 or a 220 V 50 cycles mains.
Adjustment to the actual mains voltage is from the terminal
strip. 4
The mains current, passing the primary fuses and the mains
switch, is led to the primary winding of the double-coiled
two-phase transformer. Adjustment of the rated direct-volt-
age output and compensation of a voltage drop due to the
4geing of the selenium cells is by the secondary transformer
tappings.
The transformer secondary feeds the selenium rectifier in
single-phase bridge connection.
By the action of a filter circuit the siind lamp receives
a strongly smoothened D.C.
The D.C. part is secured by a melting fuse.
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The equipment is mounted in n wall-type sheet-iron cabinet
varnished in silver-blue or it any 'esired cjilour. The
switchboard, occupying the front plate, includes the ?neee
and the mains switch. Ventilating aperturae or. t"e re-
movable side plates' care ter the neceseery air flow.
Appropriate terminals are provided for the mains and .C.
conductors.
Type
Rated direct
Max. measurements mm
'eight
voltage
V
amperage
height
width
I
depth
kp
KR 6/5
6
5
320
275
20C-
18
Type KT
The rectifier equipment serves for. the emerc:?.icy lighting
of moving-picture auditoriums and for the charging of the
emergency lighting accumulators. In casF of a mains fail-
ure the emergency lighting circuit is switched over auto-
matically from mains to accumulator supply. As soon as the
failure has ceased, the equipment should be switched back
to mains supply.
The equipment is fed from a 110 or a 220 V 5C cycles single-
phase A.C. mains. The transformer is adjusted to the actual
voltage from the terminal strip.
The mains current, passing the primary fuses and the mains
switch, is led to the primary winding of the double-coiled
transformer. Of the two independent coils on the secondary,
one feeds the bridge-connected selenium rectifier of the
accumulator charging circuit, the other the emergency light-
ing circuit. The current is supplied over its cont''cts through
the. automatic commutator, held in attracted position by the
mains voltage. A failure in the mains voltage releases the
commutator which, by its drop, sw!.tches the emergency light-
ing circuit ovrr to the accum,'.lator. There are pilot lamps
to indicate the operation of t'..e emergency lighting in
either case.
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The charging current intensity, in the accumulator circuit
is signalled by a moving-coil amperemeter.
The D.C. part of the equipment is secured by a melting fuse.
The equipment is mounted in a wall-type sheet-iron cabinet
varnished in silver-blue or in any desired colour. The in-
strument and switchboard occupies the front plate; ventil-
ating apertures on the removable side plates care for effi-
cient cooling.
Appropriate terminals are provided for the mains, accumu-
lator and emergency lighting.circuits.
Type
Rated direct
Max. measurements mm
Weight
voltage
V
amperage
A
height
width
depth
kg
KT 6/5
6 - 8
5
` 370
315
200
24
Type RR
The KR type rectifier serves for feeding the excitation
coil of the relay closing the projection window.
The equipment is fed from a 110 or a 220 V 50 cycles single-
phase A.C. mains. The transformer is adjusted to the actual,
voltage from the terminal strip.
The rated D.C. output is 14 to 20 V 0.5 A. The direct volt-
age is adjustable between 14 and 20 V in steps of approx.
1 V, by altering the secondary. transformer tappings on the
terminal strip.
The mains current, passing the primary fuses
switch, is left to the primary winding of the
transformer. The transformer secondary Beds
rectifier in single-phase'bridge connection.
smoothening the D.C., cares for filtering in
.to make the relay pull up safely, regardless
ripple.
The L.C. part of the equipment is secured by
483/2509 - 6 -
and the mains
double-coiled
the. selenium
A choke coil,
a degree enough
the remaining
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L'e equipment is mounted in a ..a'.1-type s`:,aet-iron cabinet
varnished in silver-Tlue ox in art desired colour. The switcr.
.beard occuries the front plate. 're_,tilatint? ?:.pertures or. the
removable side plates care for efficient cooling.
Appropriate terminals are provided f-= the mains and D.C.
conductors.
Type
Rated direct
l~:ax, measurements mm
"4eight
voltage
amperage
height
width
depth
kg
V
A
KR 20/0.5 14-20
0.5
290
160
12C
2.5
ADVANTAGES-
The KD type rectifier allows for lossfree adjustment. In
view of the regulated output, the power required for ex-
citation can be neglected. The continuous and simple con,
trol within a wide range by means of a step switch makes
the equipment suitable for standard and fleck-type projec-
tion lamrs alike, without; alteration of the solderings or
the adjustment.
The operation is entirely silent. The equipment contains.
no rotating parts and is ready for service immediately
after the switching.
The kH, KT and KR type rectifiers, sharing the appreciable
advantage of silent operation with the former type, which
makes them suitable for use in moving-picture theatres,
work in a lossfree manner. Having no rotating parts, they
require little space. Rectification begins immediately
after the switching. All these rectifiers excel b) their
hipy. efficiency.
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 Approved For Release 2009/04/16: CIA-RDP80T00246A007000800002-4
HUNGARIAN TRADING COMPANY FOR ELECTRICAL
GOADS A1iD PRECISION INSTRUMENTS rjmt
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
RECTIFIERS
FOR ONMIC INO INOUCiIYE
CONSUMERS
.,TYPE ME
483/2503
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APPLICATION
The ME type rectifiers are used for feeding.the exalter air-
cults of electromagnetic chucking plates, magnetic working
tables, hoisting and brake magnets and other electric ma-
chinery; they will perform duty wherever ohmic or inductive
consumers of 110 or 220 V are at work.
DESCRIPTION
The equipment is-fed from,a 110 or 220 V 50 :cycles single-
phase mains. The maximum"rated amperages are tabulated below.
The transformer is adjusted to the actual mains voltage from
the terminal strip.
The mains current, passing the primary fuses and the mains
switch, is led to the primary winding of the double-coiled
transformer. The rated direct voltage is adjusted manually
by variations of the secondary tappings. Voltage diminutions
this to the ageing of the selenium cells are dispensed with
in a similar way.
Selenium rectifiers connected in single-phase bridge oirouit
care for rectification.
A pilot lamp on the front plate serves to indicate the
switched-on condition.
The equipment is housed in a grey or a silver-blue varpished
wall-type sheet-iron cabinet. The side plates fitted with
ventilating apertures are removable, the front plate carries
the control board, including the primary and secondary fuses,
the mains switch and the pilot lamp.
ADVANTAGES
The lose-free adjustment by means of the transformer tap-
pings results in high efficiency of the equipment. Voltage
diminutions resulting from ageing are compensated similar-
ly by variations of the tappings.
483/2503 -3 -
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The rectifiers are unaensitive to surge apt to arise when-
a consumer /particularly an. inductive/ is disconnected.
T
e
Maine
irect
Maximum
Max. measurements mm
-
Weight
yp
voltag
amperage
eign
w
depth
kg
V
V
A
ME 110/3
110 and 220
110
3
420
365
300
25
ME 1106
110 " 220
110
6
650
465
350
50
ME 220/3
110 " 220
220
3
650
465
350
50
ME 220/6
3x380 " 3x190
220
6
650
465
350
75
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
- HUNGARIAN TRADING COMPANY FOR ELECTRICAL
=GOODS AND 'PRECISION INSTRUMENTS
Letters: Budapest 501, P.0.& 0. Telegrams: ELEITRO Budapest
FO:feeer er
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
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 Approved For Release 2009/04/16: CIA-RDP80T00246A007000800002-4
AUTOMATIC VOITAGE-REGUTATED
BATTERY CHARGER SET FOR SMAII
TEIEPHONE EXCHANGES
SERIES MT.
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 Approved For Release 2009/04/16: CIA-RDP80T00246AO07000800002-4
APPLICATION
The rectifier sets of series MT are to supply the
current given in the table for small telephone ex-
changes of 24 and 48 V, respectively. The sets may
be operated either manually or automatically. In ma-
nual service the charging current may be adjusted by'
a range switch, in automatic service a higher or
lower charging current is switched on automatically
according to the load.
Primarily, the sets are to supply current for small
telephone exchanges, however., they can be used at
any place requiring a voltage within given limits
across the load and a well-filtered d.c.
DESCRIPTION
The sets are operated on 110 and 220 V 50 cps
single phase main voltage. According to the avail-
able main voltage the transformer can be switched
over on.the transformer terminal strip. The main
current runs through the primary fuse and main switch
to the single-phase, double coiled transformer. The
tappings on the transformer secundary are selected
by a range switch, changing the charging current ac-
cordingly.
Rectifying is performed by a single-phase, bridge-
connected selenium rectifier powered by the fornmr
transformer. The waveness of the d.c. is smoothed
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by. a choke in-the d.c. circuit. The choke decreases
the waveness to an extent causing no disturbing hum
in the telephone connection by the residual a.c. com-
ponent.
The d.c. voltage, the charging current and the load-
ing current are measured by a combined moving-coil
meter with a special change-over switch.
The d.c. circuit is protected by a blowing fuse. The
auxiliary rectifier powered by a stabilized a.c.vol-
tage has its own separated circuit. Thus, the stabil-
ized d.c. voltage of the auxiliary rectifier and the
load-voltage are differential-connected. When the
voltage across the load exceeds the pre-set limit -
i.e. for a lighter load - the relay of the auxiliary
rectifier circuit inserts a resistance into the charg-
ing circuit by means of a linking relay or magnet
switch. When, however, the voltage across the load
sinks below the pre-set limit - i.e. for a heavier
load - the relay short-circuits a resistance in the
charging circuit, indirectly. Batteries can be charg-
ed to a peak voltage manually operated /however, the
load has to be disconnected from the battery/. In the
neighbourhood of the peak voltage the charging cur-
rent decreases as usual with rectifiers.
In automatic service the voltage can be maintained
between 24-26 V in 24 V exchanges and between 48-52 V
in 48 V ones, respectively.
The low power sets are built in iron-plate case of
wall-mounting type. The front wall of the case is
provided as a meter and service panel, the side walls
can be removed. For the input and output wires ter-
683/57 -2-
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mina's are arranged at the top of the case.
The high power sets are mounted in standing iron
plate case. The front cover is arranged as a aster
and service panel, side walls are detachable, back-
side is open. The input and output wires are con-
nected to terminals at the back-side of the case..
ADVANTAGES
The most. important advantage of the sets of the se-
ries MT is to require no special regulator that
would raise the price of the relative low power sets
in automatic operation. The rectifier, the battery,
and the load are parallel-connected, hence an unat-
tended service can be. performed by the set. With
light loads the battery is drop-charged - a highly
advantageous situation as regards the battery life
time since the battery plates cannot be damaged,
sulfated, etc. The drop charging current maintains
the charged state of the battery, because for a prop-
er adjustment the drop charging current just supplies
the self-discharge.
Further inherent advantage of the sets consists of
the simple construction. No maintenance personnel is
required. The charging current can be adjusted on an
easy way - by turning the range-switch. The regula-
tion of the charging current is lossless since the
range switch varies the tappings on the transformer.
The main voltage variation does not influence the
voltage limits, for the auxiliary rectifier gets a
statilized power.
The set is noiseless, contains no rotating parts.
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After switched on, the rectification takes place at
once.
ELEKTROI!MPEX
Nunparion Eradinp Compaof
for Electrical Goods and Precision Instruments
r t..'_ /a[o P. ..
T.l.grcmr: ELEKTRO Budaped
Letts.: Budaped 62, P.O.& 296.
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