LETTER TO (SANITIZED) FROM (SANITIZED)

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03172A000300020056-7
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 2
• Document Creation Date: December 22, 2016
• Document Release Date: February 14, 2012
• Sequence Number: 56
• Publication Date: October 1, 1958
• Content Type: LETTER

Declassified in Part - Sanitized Copy Approved for Release 2012/02/14: CIA-RDP78-03172A000300020056-7 25X1
H DENTIAU`
October 1, 1.958 1, 23 S4 9
Vttsun.n.. --- a ,Z/ 6 2d/a
ARE ' y~ ON
^ DEM.
1 '41"
EYJ zYND 6 YRS BY C3
REASON
G'DFr 3L
000 ~s sly ROTE itl /u1-K JO gY r`f
onto COMP 45 opt - _y TYPI
P O
S ._`c ~~ sr.
URIU GLASS
JUST i 2 - NRXT UY ZQ 0 AUTHI HR 10.2
We are very pleased to forwai-d our silicon solar energy converter
information-for your application, as described in our telephone
conversation of September 30, 1958.
For your regiiretaent to supply 24 volts at three ma. continuous
duty, or 0.08 she pet, day, a power supply consisting of silicon
solar energy converter panel, nickel cadmium storage battery,
and a blocking diode are required. The silicon solar energy con-
verter may be built up from basic module elements, type 49-0230.,
For an installations assiimin the solar panel to be mounted on
a flat plate at an optimum abgle to the sun, a total number of 34
modules are required; these modules are connected 17 in series,
On a typical sunny day, assuming a
and two stringsi in parallel.
l. I
peak radiation of 70 milliwatts per square centimeter, this battery
will charge at a rate of approximately 0.2 amp. hours per day; this
assumes a peak charging rate of five hours per day, which is a
The mechanical outline for a solar energy converter panel., consist-
ing of 34 modules, type 449-0 30, occupies a minimum area of 78 square
inches, with additional space provided for mounting.
Typical storage batteries recommended for this power supply are
the types 20 V0-.8, manufactured by the Gulton Manufacturing Co.
Metuchen; New Jersey, or alternately, two series connected batteries,
type 1L420, manufactured by Sonotone Corporation, Elmsford, New York.
The silicon blocking diode recommended for this application is our
type 5MS5, as described in t1e attached data sheet, SR-203.
We are very pleased to quote to you onIthe 49-0230 silicon solar
battery nodule, and the bloc,ing diode as follows :
OUR
TY
49-0230
5xs5
PRICES . EACH. 14ET
1 40 50-99 100 and up
2400 $16.00 $19.00
1.75 1.53 1.10
C NGH
01
Declassified in Part - Sanitized Copy Approved for Release 2012/02/14: CIA-RDP78-03172A000300020056-7
DENT{ `tJ'-
 Declassified in Part - Sanitized Corv Approved for Release 2012/02/14: CIA-RDP78-03172A000300020056-7
Page Two
flr;.oi)er 1., i ?' 25X1
CQN'TH lENTIiAL t
Our terms are not 30 days, i'r r._i_gl,t aIJowcd 25X1
on ordetsl in excess of $3.50-00. ch1p:inertt. o 3f_ solar L,;t t. t.e r y
modules niAy bb made within t=our to si.x weeks :,frrr r+ ;ei.F t, of
order. The blocking diode; type 5MSj l ,u-y h shipped as r? qui red.
In addition to the above design recom44e~nd a t on on 'he module
components i'ecutired for this power supply desigrn, we are able to
quote to you on ai complete solar panel., rcons.isi;_i_ng of the series-
parallei connected 'sola'r cell. niodiules; as well as blocking diode.
A slight additional charge will. apply on such a tnor.tnted unit; the
final price will depend upon the type of :materials, mounting tech-
niques, Ahd finish that you desire.
We would like to point out that the above recoamendat.ion for a
silicon solar etiergy converter, is representative for a typical
installation, Iii unusual climates, oil atmospheric conditions where
the daily etolar radiation differs considerably from the average
described abo`vej a larger number, or s~mal.l.er number of parallel
strings of solar cells way be regt.iired. The modular construction
in which Our design is of Fered , w.i.l 1. pie rmi. t, you to eccom.mod a to a
wide range of conditions.
If we may be 'of further assistance. to vou,
hesitate to call on us.
Very truly youIrs,
p.lcase do not.
LQ ~'it sv6G~r_
Declassified in Part - Sanitized Copy Approved for Release 2012/02/14: CIA-RDP78-03172A000300020056-7