MODEL 'R' VOLTMETER

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP83-00423R000500710003-5
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 8
• Document Creation Date: December 23, 2016
• Document Release Date: July 18, 2013
• Sequence Number: 3
• Content Type: OPEN

Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
16%
50X1
THE
[SIE

MODEL "R" VOLTMETER
AS STABLE AS A WIREWOUND RESISTOR*
CPYRG HT
SOUTHWESTERN INDUSTRIAL ELECTRONICS CO.
( IN COR PO RATED )
2831 Post Oak Road ? Phone MOhawk 4507
P. 0. Box 13058
Houston 19, Texas, U. S. A.
*This statement refers to the fact that precision wirewound resistors
are used for all attenuators and range resistances, and that the DC
amplifier is a highly degenerative system employing wirewound re-
sistors for the beta network, It has been found that changes in gain
with warm up are in the order of .1 of 1% and are primarily due to
the temperature coefficient of the resistors in the beta network.
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
Dec assified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
CPYRGHT
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
%,,r- 1 rv..,ri 1
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
(/ r7
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-06423R000500710003-5
50X1
THE
SIE
MODEL E-1 COMPARISON BRIDGE
CPYRGHT
SOUTHWESTERN INDUSTRIAL ELECTRONICS CO.
(INCORPORATED)
2831 POST OAK ROAD - PHONE MOhawk 4507
P. 0. BOX 13058
HOUSTON 19, TEXAS, U. S. A.
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
CPYRGHT
,
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
tor,
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5
*11 1134
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/07/18: CIA-RDP83-00423R000500710003-5