Power supply for magnetron and the like loads

Details Power supply for magnetron and the like loads Power supply for magnetron and the like loads

1979-10-22

1981-07-28

Pellinen, A. D.

Electric power conversion systems

Current conversion

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

219 1055B, H05B 668

Patent

active

042813727

ABSTRACT:
A flyback-type high-frequency, high-voltage power supply for energizing a self-rectifying load, such as a magnetron microwave power generator for a microwave oven and the like. A switching device is connected in series with a primary winding of a transformer to provide pulses of energy to a self-resonant circuit at the transformer secondary winding. The self-resonant circuit includes the electrical capacitance of the load connected across the transformer secondary winding. The load conducts only for unipolarity excitation exceeding a minimum magnitude. A clamping diode is positioned in parallel with the switching device, at the transformer primary winding, to protect the switching device from reverse-voltage effects. A high-voltage rectifier is not required in this relatively light-weight power supply.

REFERENCES:
patent: 3530363 (1970-09-01), Schimke et al.
patent: 3609512 (1971-09-01), Lewis
patent: 3909702 (1975-09-01), Hart
patent: 4001537 (1977-01-01), Burke et al.
patent: 4027200 (1977-05-01), Sahara et al.
patent: 4073003 (1978-02-01), Chambers

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