Circuit for reducing the variations of auto-supply voltage...

Electric power conversion systems – Current conversion – With condition responsive means to control the output...

Reexamination Certificate

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C363S021080, C363S021160

Reexamination Certificate

active

07864554

ABSTRACT:
A circuit for reducing the variations of auto-supply voltage of a control circuit of a switching power supply, where the control circuit supplies an activation or deactivation signal of a power transistor, includes an auto-supply voltage generator, a controlled switch capable of selectively connecting the generator to the control circuit, and a driving circuit of the controlled switch that supplies a closing signal of the controlled switch after a predefined delay of time starting from the deactivation command.

REFERENCES:
patent: 5424932 (1995-06-01), Inou et al.
patent: 5459652 (1995-10-01), Faulk
patent: 5841641 (1998-11-01), Faulk
patent: 5986897 (1999-11-01), Majid et al.
patent: 7035119 (2006-04-01), Koike
patent: 2003/0016545 (2003-01-01), Jutras et al.
patent: 195 37 876 (1996-04-01), None
PCT Search Report and Written Opinion No. PCT/EP2005/050737, Aug. 19, 2005.

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