Switching circuit

Details Switching circuit Switching circuit

2005-06-07

2005-06-07

Han, Jessica (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S021080, C363S021160

Reexamination Certificate

active

06903943

ABSTRACT:
This switching circuit includes a transformer having primary and secondary windings insulated from each other; a voltage-driven switching element which is connected in series to one of the primary and secondary windings and has a control terminal for controlling a switching operation thereof; a drive circuit which has an output connected to the control terminal and drives the main switching element; and an auxiliary winding which is provided in parallel to the primary winding of the transformer and has an output connected to the control terminal via a capacitor with positive feedback.

REFERENCES:
patent: 3708743 (1973-01-01), Grangaard et al.
patent: 4087703 (1978-05-01), Akamatsu
patent: 4335334 (1982-06-01), Hosoya
patent: 5313109 (1994-05-01), Smith
patent: 6038143 (2000-03-01), Miyazaki et al.
patent: 6108219 (2000-08-01), French
patent: 6137695 (2000-10-01), Takida et al.
patent: 6504270 (2003-01-01), Matsushita
patent: 6608769 (2003-08-01), Bergk
patent: 11-069803 (1999-03-01), None
patent: 11-262261 (1999-09-01), None
patent: 1762374 (1992-09-01), None

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