Switching regulator

Details Switching regulator Switching regulator

1980-11-14

1983-06-07

Pellinen, A. D.

Electric power conversion systems

Current conversion

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

363 97, H02M 3335

Patent

active

043874185

ABSTRACT:
A switching regulator is disclosed which is designed so that a negative feedback is applied to the base of a transistor constituting an oscillator adapted for chopping a DC voltage, only during a period of time which is required to effect pulse width control when the transistor is switched from conduction to non-conduction. A control circuit may also be provided which is arranged to compare the output of a current detecting circuit for detecting a current proportional to a current for driving a transformer with the output of an error voltage amplifier for amplifying an output resulting from comparison of a rectified version of the AC output of the transformer with a reference voltage. The foregoing control circuit is also arranged so that when the output of the current detecting circuit exceeds the output of the error amplifier, a trigger signal is imparted to cause the oscillator to be changed from the on state to the off state.

REFERENCES:
patent: 3072837 (1963-01-01), Hakimoglu
patent: 3701937 (1972-10-01), Combs
patent: 3818318 (1974-06-01), Schott et al.
patent: 3909696 (1975-09-01), Katou et al.
patent: 3931566 (1976-01-01), Pask et al.
patent: 3986101 (1976-10-01), Koetsch et al.
patent: 3989995 (1976-11-01), Peterson
patent: 4146832 (1979-03-01), McConnell
patent: 4150424 (1979-04-01), Nuechterlein

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