Shunt circuit for reducing audible noise at low loading conditio

Details Shunt circuit for reducing audible noise at low loading conditio Shunt circuit for reducing audible noise at low loading conditio

1989-11-13

1991-10-15

Beha, Jr., William H.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

363 17, 363 79, 363 98, 363 28, H02J 900, H02M 3335

Patent

active

050576984

ABSTRACT:
A power supply including a resonant converter is provided with current shunt. The current shunt automatically shunts a portion of current flowing in the resonant converter at light loading of the power supply such that output current flowing in an output circuit connected to the power supply would be reduced toward zero as the operating frequency of the converter moves to a predetermined frequency.

REFERENCES:
patent: 4071812 (1978-01-01), Walker
patent: 4587604 (1986-05-01), Nerone
patent: 4679129 (1987-07-01), Sakakibara et al.
patent: 4691273 (1987-09-01), Kuwata et al.
patent: 4727469 (1988-02-01), Kammiller
patent: 4758940 (1988-07-01), Steigerwald
patent: 4831507 (1989-05-01), Colley
patent: 4876635 (1989-10-01), Park et al.
patent: 4916590 (1990-04-01), Petersen

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