Quasi push-pull single switch current-fed fly-back converter

Details Quasi push-pull single switch current-fed fly-back converter Quasi push-pull single switch current-fed fly-back converter

1991-06-21

1992-06-16

Sterrett, Jeffrey

Electric power conversion systems

Current conversion

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

363 61, 219 1055B, H02M 3335

Patent

active

051229463

ABSTRACT:
A quasi push-pull single switch current-fed fly-back converter is used as the power supply for the magnetron of a microwave oven. A voltage doubler output circuit has a high impedance. A small magnetic circuit includes a transformer having a primary winding in series with an IGBT switch means and in series with an inductor. A single diode is connected in series with the inductor. A secondary winding is connected to the voltage doubler. A tertiary winding is coupled to a pulse width modification, i.e. for controlling the conductor sequence of the IGBT.

REFERENCES:
patent: 4499531 (1985-02-01), Bral
patent: 4833581 (1989-05-01), Ishiyama
patent: 4866589 (1989-09-01), Satoo et al.
patent: 4868729 (1989-09-01), Suzuki
patent: 4900885 (1990-02-01), Inumada
patent: 4903183 (1990-02-01), Noguchi et al.
patent: 4931609 (1990-06-01), Aoki
patent: 5001318 (1991-03-01), Noda
patent: 5012058 (1991-04-01), Smith
patent: 5019954 (1991-05-01), Bourgeault et al.
patent: 5021620 (1991-06-01), Inumada

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