Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1996-12-04
1998-02-17
Krishman, Aditya
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
H02M 3335
Patent
active
057197555
ABSTRACT:
A transformer has a primary winding connected across a dc power supply via a first switch such as a field effect transistor, and a secondary winding connected to a smoothing capacitor via a rectifying diode. Another field effect transistor or like second switch is connected in parallel with the rectifying diode. The voltage of the rectifying diode, detected by a serial circuit of a resistor and a reverse blocking diode, is compared with a reference voltage, and the second switch is made conductive when the diode voltage is less than the reference voltage.
REFERENCES:
patent: 4758937 (1988-07-01), Usui et al.
patent: 4958268 (1990-09-01), Nagagata et al.
patent: 5636108 (1997-06-01), Taurand
Krishman Aditya
Sanken Electric Co. Ltd.
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