Voltage converter with a self-oscillating control circuit

Details Voltage converter with a self-oscillating control circuit Voltage converter with a self-oscillating control circuit

2005-11-08

2005-11-08

Sherry, Michael (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S021080, C363S097000

Reexamination Certificate

active

06963496

ABSTRACT:
A voltage converter including a transformer having a primary winding connected in series with a switch for cutting-up a supply voltage and having a secondary winding associated with a capacitor providing a D.C. low voltage, and a self-oscillating control circuit of the switch for detecting the end of the demagnetization of an auxiliary winding of the transformer, to turn the switch on, and for detecting the current in the on-state switch to turn it off when this current reaches a reference point. The reference point is made variable according to the voltage across the auxiliary winding.

REFERENCES:
patent: 4754386 (1988-06-01), De Weerd
patent: 5717578 (1998-02-01), Afzal
patent: 5831837 (1998-11-01), Coyne et al.
patent: 6118675 (2000-09-01), Lionetto et al.
patent: 6134123 (2000-10-01), Yamada

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