Power supply circuit

Details Power supply circuit Power supply circuit

1989-07-18

1990-11-06

Wong, Peter S.

Electric power conversion systems

Current conversion

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

363142, 320 32, 320 39, H02J 702, H02M 3335

Patent

active

049690779

ABSTRACT:
A power supply circuit composed of a series arrangement of the primary winding of a transformer (TR), a first transistor (T.sub.1) and a current measuring resistor (R.sub.2). The first transistor (T.sub.1) is switched by means of a second transistor (T.sub.2). The second transistor is controlled by the combination of a first signal which is proportional to the intensity of the current through the current measuring resistor (R.sub.2) and a second signal which is the voltage, filtered by a low-pass filter, across the secondary winding (n.sub.2) of the transformer.

REFERENCES:
patent: 4387418 (1983-06-01), Koike
patent: 4504775 (1985-03-01), Becker
patent: 4647833 (1987-03-01), Schmidt et al.
patent: 4652984 (1987-03-01), van der Akker et al.
patent: 4684871 (1987-08-01), Plagge
patent: 4706009 (1987-11-01), Schwarz
patent: 4763061 (1988-08-01), Schwarz

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