Accession Number:

AD0262725

Title:

TEMPERATURE COMPENSATING TRIMMER

Descriptive Note:

Corporate Author:

TRW ELECTRONIC COMPONENTS DIV CAMDEN N J

Personal Author(s):

Report Date:

1961-08-25

Pagination or Media Count:

1.0

Abstract:

Three temperature coefficient trimmers were developed with insertion capacities of 2.0, 6.5, and 10.0 pf. Five of each were built and evaluated. Each of these is adjustable for T.C.s temperature compensations in excess of 2000 ppmC. The maximum T.C. adjustment in many of the units gave results up to 3000 ppmC. The design satisfies the goals of voltage 1000 V DC, altitude 50,000 ft., T.C. 2000 ppmC, shock 50 Gs - 11 milliseconds, insulation resistance 10,000 megohms, Q 500, and operating range -55 C to 150 C. Vibration was checked up to 55 c only, and was satisfactory. Torque was below 2 inch ounces on some units, but this can be overcome. Insertion capacity variations over the T.C. range at ambient were over the .05 pf specification. In the final stages of this development it became necessary to modify the evaluation program as the contract commitments were exceeded. However, a feasible design was achieved. Some refinements can be incorporated. Recommendations are made. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE