Switching supply with pulse width and rate modulation

Details Switching supply with pulse width and rate modulation Switching supply with pulse width and rate modulation

1987-01-08

1988-09-20

Beha, Jr., William H.

Electric power conversion systems

Current conversion

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

323288, 363 97, H02M 3335

Patent

active

047729953

ABSTRACT:
A switching type power supply is described which employs pulse width and rate modulation. Enhanced control range is achieved by controlling a frequency determining circuit to increase operating frequency as a function of power switch pulse width. The power switch controls the switching of primary current in a transformer whose secondary supplies the output via a rectifier/filter circuit.

REFERENCES:
patent: 4037271 (1977-07-01), Keller
patent: 4276586 (1981-06-01), Boekhorst
patent: 4347559 (1982-08-01), Sturgeon
patent: 4479174 (1984-10-01), Cates
patent: 4677534 (1987-06-01), Okochi
patent: 4679131 (1987-07-01), Filliman

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