Power supply apparatus having separate plural outputs

Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter

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363 70, H02M 3335

Patent

active

056422695

ABSTRACT:
A circuit construction comprising a diode and a capacitor is connected to a secondary coil of a thin transformer such as a wire-type transformer. An excitation energy is discharged during a reset time of the transformer, and this excitation energy is accumulated in the capacitor, thereby output voltage is obtained through the capacitor. A direct current output voltages having two outputs is obtained through one transformer. A small volume and a light weight of the transformer, so that a compact and thin power supply apparatus can be obtained. Since a winding ratio of the transformer can be made small, a copper loss of the transformer can be reduced. It is unnecessary to select a higher switching frequency and a manufacturing cost of the power supply apparatus can be reduced.

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patent: 4847742 (1989-07-01), Ohashi et al.
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patent: 5353001 (1994-10-01), Meinel et al.
patent: 5400239 (1995-03-01), Caine
patent: 5502430 (1996-03-01), Takahashi et al.

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