AC coupled bias circuit for power converters

Details AC coupled bias circuit for power converters AC coupled bias circuit for power converters

2007-09-25

2007-09-25

Laxton, Gary L. (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S097000

Reexamination Certificate

active

11198601

ABSTRACT:
A switching power system for converting an input voltage to an output voltage across a transformer is disclosed. The system includes a control circuit. The control circuit has a control input coupled for receiving the output voltage and an output coupled to a primary winding of the transformer. The system includes a bias circuit for supplying an operating voltage to the control circuit. The bias circuit includes a capacitor. The capacitor has a first terminal coupled to a first terminal of a first secondary winding of the transformer. A first diode is coupled between a second terminal of the first secondary winding and a second terminal of the first capacitor. A second diode is coupled between the second terminal of the capacitor and a bias input of the control circuit. A method of making the same is disclosed.

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patent: 6987677 (2006-01-01), Konno
patent: 7139179 (2006-11-01), Hua

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