Regenerative control type switching power source device

Details Regenerative control type switching power source device Regenerative control type switching power source device

1993-01-07

1995-01-17

Sterrett, Jeffrey L.

Electric power conversion systems

Current conversion

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

363 18, 363 55, 363131, H02M 328

Patent

active

053831063

ABSTRACT:
Disclosed is a switching power source device for supplying a DC stabilized voltage to industrial or household electronic appliances. The power source device can restrict a change in the switching frequency due to the change in load so that low noise and high efficiency can be realized. The power source device includes a first rectifying and smoothing circuit and a second rectifying and smoothing circuit. The first rectifying and smoothing circuit includes a rectifying diode and a smoothing capacitor. The second rectifying and smoothing circuit includes a rectifying diode and a smoothing capacitor. In a closed circuit composed of the first rectifying and smoothing circuit and second rectifying and smoothing circuit which are connected by a transformer, leakage inductance between the primary winding and secondary winding of the transformer is caused to resonate with the first or second rectifying and smoothing circuit so that a resonance current due to the resonance is taken as the current from the secondary winding to restrict occurrence of noise.

REFERENCES:
patent: 3596165 (1971-07-01), Andrews
patent: 4464709 (1984-08-01), Barter
patent: 4814962 (1989-03-01), Magalhaes et al.
patent: 4959764 (1990-09-01), Bassett
patent: 4975821 (1990-12-01), Lethellier
patent: 5126931 (1992-06-01), Jitaru
patent: 5146394 (1992-09-01), Ishii et al.
patent: 5159541 (1992-10-01), Jain
patent: 5173846 (1992-12-01), Smith

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