Power supply circuit featuring minimum parts count

Details Power supply circuit featuring minimum parts count Power supply circuit featuring minimum parts count

1990-06-29

1992-02-18

Stephan, Steven L.

Electric power conversion systems

Current conversion

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

363 21, 363 49, 315411, 358190, H02M 3335

Patent

active

050899473

ABSTRACT:
A full reset flyback regulator includes a power transformer having a primary winding and at least one secondary winding coupled to a load. A single control winding on a primary side of the power transformer is coupled through control circuitry to a gate electrode of a switching device that is connected to the primary winding. The voltage polarity on the control winding alternates so that if the switching device is "ON" a drive voltage is provided on its gate electrode and if the switching device is "OFF" a bias voltage is provided to the error amplifier control circuit. Each cycle of the regulator is initiated via a sync pulse which is provided from the high voltage flyback transformer of a display or monitor subsystem.

REFERENCES:
patent: 4467406 (1984-08-01), Hattori et al.
patent: 4745535 (1988-05-01), Sugishima et al.
patent: 4812959 (1989-03-01), Driscoll et al.

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