Switching power source device

Details Switching power source device Switching power source device

1992-04-21

1993-06-01

Voeltz, Emanuel T.

Electric power conversion systems

Current conversion

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

363 23, H02M 3338

Patent

active

052165850

ABSTRACT:
A switching power source device includes a rectifying smoothing circuit made up of a full-wave rectifier 2 and a small-capacity capacitor 3, a resonance frequency controlled type resonance converter circuit 4 having a controlled resonance frequency, a power source regulating transformer 7 having a primary winding N.sub.1, a secondary winding N.sub.2 insulated from the primary winding N.sub.1, and a control winding at right angles to the primary and secondary windings, a controller 9 for controlling the controlling current of the power source regulating transformer 7 and a rectifying smoothing capacitor 8 determining the ripple voltage of the dc output voltage from the power source regulating transformer 7 in conjunction with the load power. With the switching power source device, the harmonic distortion in the ac input current is diminished and the ac input voltage is improved to a sinusoidal wave.

REFERENCES:
patent: 4361865 (1982-11-01), Shono
patent: 4736283 (1988-04-01), Yasumura

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