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) : Kletsky, Earl J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/016790.pdf


Report Date : 01 Jun 1953


Pagination or Media Count : 61


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.


Descriptors :   *SECOND HARMONIC GENERATION , *MAGNETIC MODULATORS , VOLTAGE , ALTERNATING CURRENT , MATHEMATICAL ANALYSIS , SIGNALS , DESIGN CRITERIA , AMPLITUDE , DIRECT CURRENT , LOW FREQUENCY , FIGURE OF MERIT , NOISE(ELECTRICAL AND ELECTROMAGNETIC) , POWER GAIN , EXCITATION , OUTPUT , AMPLIFICATION


Subject Categories : Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE