Accession Number:

AD0654415

Title:

OPERATIONAL DEMODULATOR DRIVER,

Descriptive Note:

Corporate Author:

JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s):

Report Date:

1959-10-08

Pagination or Media Count:

63.0

Abstract:

The paper presents the design considerations involved in the evaluation of a transistorized high-gain feedback amplifier designed for a specific application. Experimental data taken on a breadboard model of the final design are also presented indicating the degree of correlation with analytical results and quality of performance achieved. The resultant design satisfies all of the conditions and requirements with perhaps the exception of maximum voltage capabilities. It will sum the outputs of two 400 cps sensing instruments with the high accuracy and negligible interaction associated with operational amplifiers. The summing impedances are high in order that any end instrument used might be shunted with its optimum termination resistance, up to 200 kilohms. Calculations place the pessimistic maximum output capabilities at approximately 13v rms at the driver output transformer secondary 12v at the output of a demodulator however, the breadboard model tested exhibited a capability of 25v rms over the specified temperature and load resistance ranges with nominal supply voltages. Author

Subject Categories:

  • Flight Control and Instrumentation
  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE