ELECTRICAL AND ELECTRONICS INSTRUMENTS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00046R000300150005-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 3
• Document Creation Date: December 14, 2016
• Document Release Date: May 22, 2002
• Sequence Number: 5
• Publication Date: January 29, 1954
• Content Type: REPORT

Approved For Release 2002/08/07 : CIA-RDP82-00046R000300150005-7
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SECRET
25X'
COUNTRY Poland
SUBJECT Electrical and Electronics Instruments
DATE OF INFORMATION
PLACE ACQUIRED
THIS IS UNEVALUATED INFORMATION
SOURCE
2. X1A
25X1 C
25X1A
25X1X:
'DATE DISTR. 29 Jan. 1954
NO. OF PAGES 3
1. Source never saw or heard of a Ballintine type of vacuum tube volt-
meter. The only work being done on sintered coil cores is by the
Technical Institute of Gliwice which has made a few cores for experi-
mental purposes. Taut suspension, spotlight-type galvanometers were
obtained from the Austrian firm Norma. Current sensitivities ran as
high as 10-9 or 10-10 amp/mm, and were obtained through the conven-
tional optical magnification design. Suspended coil, D'Arsonval
galvanometers were unobtainable and the few which were in use at
institutes and universities had been procured many years ago from
Germany and the United States. Some conventional current and voltage
instruments were obtained from the AT and RFT firms in East Germany,
from Norma in Austria, from the Orion firm in Hungary, and the Metra
firm in Czechoslovakia. The Czechoslovak instruments were generally
of very good quality, the Hungarian ones very crude and poor, and the
others of average quality. 25X1A
2. The inductance , which were made by the PPAE for the
T-11 factory, were to be used as late chokes in a small tranrsmitter
operating in the two to seven mc/s range. Source knows nothing of
the details or use of this transmitter. In the same report, mention
is made of some 50 resistance thermometers which the PPAE constructed
for use in grain elevators in Poland. These had the sensitive element
made of 0.2 mm. Cu wire, and the indicating instrument in the bridge
assembly was a differential type of microammeter or galvanometer. The
standard cells mentioned were made. by the Technical Institute in
Gliwice and were of the Weston unsaturated type.
SF3CRF.T___
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All recording instruments were obtained from the AT firm in East
Germany. They were 500 w. instruments, ink recording, and with a
current range from 3 mA to 6 A fiullrscale,::and 6 v..-to 600 v. full
scale. No fluxmeters were seen, but some were certainly located
at various universities and institutes. Multi or poly range test
instruments were obtained from Siemens, Norma, and AT. The instru-
ments utilized a Cu-CuO rectifier for the AC circuits, and had a
basic indicating movement of I mA sensitivity. The few more sen-
sitive instruments which were available were obtained from England
(firm unknown); some of them were of 50 uA full-scale sensitivity.
No thermocouple, high frequency, transfer instruments were availa-
ble. The PPAE made all its-.: own vacuum tube voltmeters, which
utilized the RCA Volt Ohmest bridge circuit, and which had a DC
resistance of 12 megohms and an AC impedance of three megohms. The
PPAE had no strictly high frequency measuring instruments. They
manufactured decade type potentiometers, with bifilar windings for
frequencies up to 10,000 cps and for input voltages up to 300 v.
The input resistance was 10,000 ohms.
All the D'Arsonval pivoted type electrical measuring instruments
manufa-t-irrPti In d are made at the A-3 firm in Wochy near 25X1A
Warsaw The highest accuracy instruments made by
this firm were of % accuracy, and had a mirror scale. The basic
meter movement was of 1 mA sensitivity. All jeweled bearings were
procured from an unknown Swiss firm or firms, and were of some syn-
thetic material, presumably sapphire. The magnetic pole pieces
were made at the Baildon Steel Works in Katowice, and great diffi-
culty was experienced by this firm in producing properly aged magnets.
This was due primarily to the inability of securing proper materials.
The output of the A-3 plant was always inadequate for the demand.
Many material difficulties existed. The PPAE laboratory could
obtain no metalized resistors.. They had adequate stocks of wire-
wound resistors but none larger than one megohm. Most of their
resistors and condensers were obtained from East Germany and Norma.
A few were obtained from Sweden but were of very poor quality. The
East German source was an RFT firm, and near the end of the period
covered these were no longer pro-
curable. ey o a ne aaequ of high resistance wire
from Sweden, and low temperature coefficient of resistance wire
from the USSR. They obtained selenium rectifiers from East Germany,
but they were of very poor quality. Dr. GROSZKOWSKI of the Technical
Institute of Warsaw, made a few transistors, but Source knows
nothing of their characteristics.
tronic oscilloscope with a 15 cm. screen, and for use o u- to
25X1
Certain instruments were obtained from the USSR. I large
electrodynamic type of standard ammeter, 0 to 5 ampere rangeas
well as a similar type of voltmeter, of 0 to 7.5, 15, 30, and 60 v.
range. In this latter instrument there was a 40% variation in the
full-scale readings of the various ranges. In both instruments,
there was an excessive amount of pivet friction, amounting to better
than one-half of a graduation movement of the needle, upon gentle
tapping. The Russians apparently never heard of coil balancing,
since errors due to this lack were prominent. lec- 25X1
2 me/s with a very great horizontal sweep extension. 25X1
string type oscillograph which was fairly good, and suspects at it
actually came from East Germany. The laboratory had three bridges
for current transformer measurements, which were very good, and
again, they actually may have been manufactured
in East Germany. They had an impedance bridge, Marconi type,-which
had a one per cent stated accuracy but which was actually some three
to five per cent. This instrument was of good design and construc-
tion.
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7. For calibration purposes, the PPAE relied on the PIT, (Industrial.
Institute of Telecommunications, Warsaw). This institute had a
selection of "standard" Weston Hied 5 and equivalent make instruments
which they secured in 1947-1948 from Weston and Norma. This insti-
tute had no way of calibrating their "standard" instruments by the
usual method's utilizing a potentiometer, standard cell and standard
resistances. The Institute had a Kelvin double bridge of Normaook
manufacture for low resistance measurements. The PPAE simply
one of their best instruments over to the PIT and had it calibrated
against their so-called "standard" instruments. They then used it
as their working standard. This method was not too satisfactory
for. obvious reasons.
SECRET,
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