Accession Number:

AD0016790

Title:

DESIGN CRITERIA FOR LOW-LEVEL SECOND-HARMONIC MAGNETIC MODULATORS

Descriptive Note:

Technical rept. no. 1

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE SERVOMECHANISMS LAB

Personal Author(s):

Report Date:

1953-06-01

Pagination or Media Count:

61.0

Abstract:

Magnetic modulators were studied as devices to circumvent the drift and noise problems in dc amplification by converting low-level, LF signals to AM, suppressed-carrier outputs which permit conventional ac amplification. Mathematical analyses of a modulator with a high-impedance source and signal and a voltage output are presented for 1 no-signal operation, 2 signal operation, 3 variation of output with excitation amplitude, 4 time-constant, 5 power gain, and 6 figure of merit. Experiments to determine configuration, excitation, output, core design, and circuitry for a 2-core, current-excited modulator indicated that the correlation between analytical and experimental work was sufficient to permit the use of the analysis as a design basis for second-harmonic magnetic modulators.

Subject Categories:

  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE