Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1994-11-09
1997-06-24
Sterrett, Jeffrey L.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
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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Joraku Masami
Kanouda Akihiko
Kawamura Makoto
Miyamoto Yoshio
Obara Tetsuya
Hitachi , Ltd.
Hitachi Mizusawa Electronics Co., Ltd.
Sterrett Jeffrey L.
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