Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1995-01-06
1996-11-05
Wong, Peter S.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 97, H02M 3335
Patent
active
055724132
ABSTRACT:
A primary control type switching power supply circuit includes a transformer having a primary side and a secondary side, a control circuit generating a control signal based on a detection signal, a circuit for switching a current flowing through the primary side in response to the control signal so as to generate an A.C. voltage on the secondary side, a rectifying and smoothing circuit for rectifying and smoothing the A.C. voltage to generate an output voltage across first and second terminals, an output voltage detection circuit including a circuit part for comparing a reference voltage and a detection voltage that is based on the output voltage, and a detection signal transmitting part supplying to the control circuit the detection signal which is indicative of an error between the reference voltage and the detection voltage so that the output voltage is maintained constant based on the control signal, and a circuit including a choke coupled to one of the first and second terminals for turning the output voltage ON/OFF via the choke at a switching frequency and for obtaining a D.C. voltage by rectifying and smoothing an induced voltage of the choke caused by the ON/OFF of the output voltage. The D.C. voltage is supplied to the detection signal transmitting part of the output voltage detection circuit as a driving voltage from a driving power supply for the detection signal transmitting part.
REFERENCES:
patent: 4546421 (1985-10-01), Bello et al.
patent: 4825351 (1989-04-01), Uesugi
Fujitsu Limited
Han Y. J.
Wong Peter S.
LandOfFree
Primary control type switching power supply circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Primary control type switching power supply circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Primary control type switching power supply circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2019800