Current resonance type switching power supply circuit

Details Current resonance type switching power supply circuit Current resonance type switching power supply circuit

1995-09-01

1997-04-01

Wong, Peter S.

Electric power conversion systems

Current conversion

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

363 17, H02M 3335, H02M 324, H02M 542

Patent

active

056173059

ABSTRACT:
A current resonance type switching power supply circuit in which a power factor and a voltage regulation in the power supply are improved includes switching elements for interrupting either a voltage or a current output from a DC power supply and supplying the output to primary windings of an insulating transformer and a non-insulating transformer. The switching power supply circuit receives a predetermined alternating voltage from the insulating transformer, and is driven by a DC power supply including a rectifying means for rectifying an AC power supply, a decoupling capacitor arranged at an output side of the rectifying means so as to eliminate noise, a secondary winding of the non-insulating transformer, and a smoothing capacitor charged by a charging circuit including a diode and a choke coil.

REFERENCES:
patent: 4347558 (1982-08-01), Kalinsky
patent: 4525774 (1985-06-01), Kino et al.
patent: 4675796 (1987-06-01), Gautherin et al.
patent: 5267132 (1993-11-01), Gulczynski
patent: 5481449 (1996-01-01), Kheraluwala et al.

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