5O0_W_VARIAB[E_PULSE_WIDTH_REGULATOR

Published:2009/7/10 22:16:00 Author:May | From:SeekIC

Chopper transistor supplies pulsewidth-modulated pulses to averaging circuit and filter. Filter output voltctge is compared to extemal reference voltage by magnetic am plifier, which changes pulse width to decrease devicttion. Chopper is driven by two-transistor square-wave oscillator modulated by mag-netic amplifier.-P. Bahhasctr, New Iransistor Regukttor Handles 500-Watt Outputs, Elec-tronics, 35:38, p48-49.



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