TEMPERATURE COMPENSATING TRIMMER
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 ppm/C. The maximum T.C. adjustment in many of the units gave results up to 3000 ppm/C. The design satisfies the goals of voltage (1000 V DC), altitude (50,000 ft.), T.C. (!2000 ppm/C, shock (50 G's - 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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 25, 1961
- Accession Number
- AD0262725
Entities
People
- E.j. Caron