Switching power source apparatus

Details Switching power source apparatus Switching power source apparatus

1994-02-04

1995-09-12

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 46, 363 78, 363 89, H02P 1300

Patent

active

054503078

ABSTRACT:
A switching power source apparatus for producing power signals. The apparatus includes a rectification circuit for rectifying received alternating voltage signals, a smoothing circuit for smoothing the rectified signals and a switching power supply circuit for producing the power signals. The apparatus may include a circuit for extracting low voltage signals from the switching power supply circuit and for superposing such low voltage signals on the smoothed rectified signals so as to reduce a ripple component present in the smoother rectified signals. The smoothing circuit and the switching power supply circuit may utilize a common switching device and/or a common frequency switching signal.

REFERENCES:
patent: 4771373 (1988-09-01), Rademaker
patent: 5132606 (1992-07-01), Herbert
patent: 5166869 (1992-11-01), Hesterman

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