Self oscillating power stage for inverted rectifier power supply

Details Self oscillating power stage for inverted rectifier power supply Self oscillating power stage for inverted rectifier power supply

1989-12-14

1991-10-29

Stephan, Steven L.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 25, 363 97, H02M 3335

Patent

active

050620312

ABSTRACT:
A self-oscillating inverted rectifier has a series-resonant circuit connected between a load and the selector terminal of an electronically controllable switch, the other terminals of which are connected respectively to d.c. sources of different potential. Phase detection and feedback circuits provide a rectangular control wave for connecting and disconnecting the resonant circuit to each d.c. source only at null transits of the current in the resonant circuit. The feedback circuit includes a control circuit supplied with a regulation voltage, which may be derived from the load, whereby the switch is intermittently prevented from connecting the resonant circuit to energizing d.c. for an integral number of half cycles of the resonant frequency. The load may be a high-frequency electrosurgical device or, more generally, a rectifier circuit providing accurately regulated d.c. power to a variable load.

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Hewlett Packard Journal, Aug. 1981, vol. 32, No. 8, pp. 2-7, 10.
Elektronik 4/25.2.1983, pp. 67-71.
Elektronik 15/26.7.1985, pp. 61-65.
Tietze, Schenk-7th Edition, Dec. 1985, pp. 538-569.

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