Self-oscillation-resonance type power supply circuit

Details Self-oscillation-resonance type power supply circuit Self-oscillation-resonance type power supply circuit

1999-03-22

1999-12-28

Riley, Shawn

Electric power conversion systems

Current conversion

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

H02M 3335

Patent

active

060090014

ABSTRACT:
A self-oscillation-resonance type power supply circuit having a stabilizer for output voltages or output currents. A transformer and two transistors (a first transistor and a second transistor) are used to form a push-pull type self-oscillation-resonance type power supply circuit. Feedback signals that change according to resonant voltages are inputted to individual gates of the first transistor and the second transistor, a controller for generating error signals corresponding to the difference between a voltage signal and a reference signal is included in the circuit, and the error signals are fed to the individual gates of the first transistor and the second transistor, whereby conduction timing of the individual transistors is changed to vary the self-oscillation frequency. When the self-oscillation frequency changes,, the amount of energy to be transferred form a resonant circuit formed by a resonance capacitor circuit and a first finding of the transformer to a second winding of the transformer so as to control output voltages.

REFERENCES:
patent: 4755923 (1988-07-01), Maeba et al.

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