Magnetron energizing circuit

Details Magnetron energizing circuit Magnetron energizing circuit

1978-02-21

1982-10-26

Chatmon, Jr., Saxfield

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Discharge device and/or rectifier in the cathode or heater...

219 1055B, 315 3951, 315105, 331 86, 328262, H05B 3900, H05B 4114

Patent

active

043564313

ABSTRACT:
Microwave oven with a self-regulating circuit operated from a low voltage a.c. source based upon a substantially constant current transformer and condenser series combination and having a return path for current on alternate half cycles. For defrosting food the magnetron is operated at partial power which is achieved by decreasing the voltage applied to the magnetron. This is done either by increasing the capacitive reactance in series with the secondary of the transformer or by decreasing the secondary voltage. Switching problems are solved by providing the arrangement of the invention at the grounded end of the transformer secondary. The self-regulating circuit is required to be of the type which has one end of the secondary winding grounded.

REFERENCES:
patent: 3396342 (1968-08-01), Feinberg
patent: 3413559 (1968-11-01), Jorgenson et al.
patent: 3684978 (1972-08-01), Otaguro
patent: 3732504 (1973-05-01), Levinson
patent: 4017702 (1977-04-01), Harmon et al.

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