Switched-mode power supply circuit

Details Switched-mode power supply circuit Switched-mode power supply circuit

1989-08-24

1990-07-31

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 21, 363 97, 323267, H02M 3335

Patent

active

049454650

ABSTRACT:
A switched-mode power supply circuit having a transformer and a first controllable switch on the primary side of the transformer. A first section is in the form of a flyback d.c. converter including a first secondary winding of the transformer for generating a first d.c. output voltage which is stabilized, by a control, against d.c. input voltage variations of the circuit and of a first load. A second section including a second secondary winding of the transformer constitutes a forward d.c. converter having a second controllable switch for generating a second d.c. output voltage. The ratio between the period of conductance of the second switch and the period of the control signal of the first switch is independent of the frequency of this signal.

REFERENCES:
patent: 4642743 (1987-02-01), Radcliffe
patent: 4642744 (1987-02-01), Thomas
patent: 4694385 (1987-09-01), Marinus
patent: 4833582 (1989-05-01), Kupka
patent: 4847742 (1989-07-01), Ohashi et al.

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