Converter circuit employing pulse-width modulation

Details Converter circuit employing pulse-width modulation Converter circuit employing pulse-width modulation

H - Electricity

02

M

321/29

H02M 3/26 (2006.01) H02M 3/337 (2006.01)

Patent

CA 1167916

Abstract: A voltage conversion and regulation system and method of same utilizing pulse-width modulation to vary the periodic energization of a tuned circuit employed to drive a transformer and an associated rectifier. The tuned resonant circuit is periodically energized from a DC source at a fixed rate but for alterable periods of time during each cycle so as to produce in the tuned circuit an alternating current of fixed frequency for subsequent transformation and rectification into a DC voltage of predetermined, regulated level. A pulse-width modulator is connected in feedback-loop fashion between the system output terminals and switch circuitry employed to effect the periodic energization. Varying the length of time during which the switch circuitry is activated responsive to changes in the level of output voltage produces the desired regulating control.

359037

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