Accession Number:

AD0654389

Title:

TRANSISTORIZED VOLTAGE CONTROLLED FM SUBCARRIER OSCILLATOR,

Descriptive Note:

Corporate Author:

JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s):

Report Date:

1958-07-24

Pagination or Media Count:

37.0

Abstract:

A voltage-sensing, frequency-modulated, subcarrier oscillator was developed to measure both AC and DC voltages. The oscillator is used to provide a frequency-modulated subcarrier where the deviation is proportional to the amplitude of the input voltage. It is one of the basic elements required in the FMFM telemetering system. Primary advantages of transistorizing the oscillator are to obtain a unit capable of withstanding high accelerations without degradation of electrical performance, and to substantially reduce power consumption. As of this time, six preliminary models have been built. Testing of these units indicates the design is practical, and relatively reproducible on a manufacturing basis. This report will include a discussion of the design problems encountered and their solutions and the general aspects of the circuit. An appendix is included for a detailed analysis of circuit operation, circuit and component considerations, and technical information required for duplicating the voltage controlled oscillator. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Telemetry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE