Regulated switched power circuit with resonant load

Details Regulated switched power circuit with resonant load Regulated switched power circuit with resonant load

1983-06-03

1985-08-13

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 97, 363134, H02M 100

Patent

active

045353999

ABSTRACT:
A switching circuit is employed to control the flow of energy from a power source to a tuned load. The control is achieved by means of a pulse width control voltage. The load current is sensed and fed to a phase locked loop which contains an oscillator producing an output that is slightly above load resonance. The phase locked loop forces the circuit to operate at a frequency where the modulating pulses are initiated at the load current zero crossing. The circuit is shown in use in a regulated d-c power supply and in a fluorescent lamp power supply application.

REFERENCES:
patent: 4071812 (1978-01-01), Walker
patent: 4126891 (1978-11-01), Suzuki et al.
patent: 4233658 (1980-11-01), Lupatin et al.
patent: 4244015 (1981-01-01), Beebe
patent: 4277728 (1981-07-01), Stevens
patent: 4323959 (1982-04-01), Check
patent: 4330717 (1982-05-01), Coleman
patent: 4415839 (1983-11-01), Lesea

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