Multiple output switching power supply having one controlled out

Details Multiple output switching power supply having one controlled out Multiple output switching power supply having one controlled out

1990-07-20

1991-03-12

Wong, Peter S.

Electric power conversion systems

Current conversion

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

363 97, 323267, H02M 3335, G05F 1577

Patent

active

049997599

ABSTRACT:
A multiple output switching power supply having one controlled output and load compensation, where periodical voltage pulses, induced in at least two secondary windings of a transformer, load two buffer capacitive elements, each connected between ground and, respectively a first and a second output terminal at two different, like sign voltages and makes available two output voltages V1, V2, one of which (V1) is controlled, at first and second output terminals, respectively, and where the capacitive element connected between ground and the first terminal includes two series connected capacitors having respective values such that a voltage slightly higher than V2 in absolute value is imparted to the node common to the two capacitors. The node is connected to the second output terminal through a diode conductive in the direction which allows the electric charge stored in the first capacitive element to flow towards the second terminal and the second capacitive element when the output voltage V2 decreases in absolute value.

REFERENCES:
patent: 3790878 (1974-02-01), Brokaw
patent: 4122514 (1978-10-01), Amin
patent: 4419723 (1983-12-01), Wilson, Jr.
patent: 4646217 (1987-02-01), Baroni et al.
patent: 4660136 (1987-04-01), Montorefano

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