Microwave oven with inverter controlled power source

Details Microwave oven with inverter controlled power source Microwave oven with inverter controlled power source

1991-03-29

1992-09-22

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

315105, 363 98, H05B 668

Patent

active

051499290

ABSTRACT:
A microwave oven with an invertor control power source produces a microwave by the use of the magnetron in relation to the high frequency power generated by the invertor control power source. The heat sensitive ferreit beads provided on the lead wire for transmitting the high frequency power to the magnetron changes the inductance of the wire from the high level to the low level at around a threshold temperature lower than the working equilibrium temperature of the magnetron. The cathode filament current remains within the allowable range, and the moding of the magnetron is prevented. The magnetron can operate in a long life time.

REFERENCES:
patent: 3591826 (1971-07-01), Valles
patent: 3727098 (1973-04-01), Crapuchettes
patent: 4164685 (1979-08-01), Takahashi
patent: 4825028 (1989-04-01), Smith
patent: 4835353 (1989-05-01), Smith et al.

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