Switch-mode supply with power factor correction

Details Switch-mode supply with power factor correction Switch-mode supply with power factor correction

1998-11-02

2000-04-18

Tso, Edward H.

Electric power conversion systems

Current conversion

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

363131, H02M 3335, H02M 7537

Patent

active

060522909

ABSTRACT:
A circuit for providing a rectified voltage to a flyback switch-mode supply circuit comprises a rectifying bridge having output terminals; a primary winding of the switch-mode supply having an intermediate tap; a switch serially connected with the primary winding; the serial connection between the output terminals, of a first diode and a capacitor, the first diode being biased so as to allow the charging of the capacitor; a second diode between a first output terminal of the winding, the second and third diodes being biased so as to let the current flow towards a second terminal of the winding.

REFERENCES:
patent: 4007413 (1977-02-01), Fisher et al.
patent: 4268898 (1981-05-01), Brown
patent: 4280174 (1981-07-01), Sonda
patent: 4905136 (1990-02-01), Tanaka
patent: 4928220 (1990-05-01), White
patent: 5420776 (1995-05-01), Preller
patent: 5459650 (1995-10-01), Noro
patent: 5528483 (1996-06-01), Mohandes
French Search Report from French Patent Application No. 95 13041, filed Oct. 30, 1995.

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