Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2008-09-26
2011-11-08
Patel, Rajnikant (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S049000
Reexamination Certificate
active
08054656
ABSTRACT:
A switching control circuit is coupled to a switching device and an auxiliary winding of a transformer, wherein a primary winding of the transformer is coupled to the switching device. The switching control circuit includes a voltage receiver, a comparing unit and a propagation delay circuit, wherein the voltage receiver is coupled to the auxiliary winding of the transformer for receiving a reflected voltage signal and transforming the reflected voltage signal into a peak voltage signal, while the switching device is turned off. The comparing unit is coupled to the voltage receiver for receiving the peak voltage signal and a first threshold voltage, and outputting a comparison result. The propagation delay circuit is coupled to the comparing unit for receiving the comparison result, and outputting a PWM signal to turn on the switching device after a delay time.
REFERENCES:
patent: 7054170 (2006-05-01), Yang et al.
Chang Chih-Chi
Su Ying-Chieh
Patel Rajnikant
Rosenberg , Klein & Lee
System General Corp.
LandOfFree
Switching control circuit for a switching power converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Switching control circuit for a switching power converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching control circuit for a switching power converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4264763