Magnetron drive power supply

Electric heating – Microwave heating – With control system

Reexamination Certificate

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Details

C219S716000, C219S702000, C323S319000, C363S096000, C315S219000

Reexamination Certificate

active

07060954

ABSTRACT:
Timing of zero voltage in zero-voltage detector for detecting zero voltage of a commercial power supply1is predicted and input from the zero-voltage detector6is received only for a given time before and after the predicted timing, whereby overvoltage and overcurrent caused by a zero point shift can be prevented. Thus, it is provided a magnetron drive power supply which is excellent in stability for change in the power supply environment such as noise or instantaneous power interruption.

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patent: 4900885 (1990-02-01), Inumada
patent: 4931609 (1990-06-01), Aoki
patent: 4967051 (1990-10-01), Maehara et al.
patent: 5115168 (1992-05-01), Shoda et al.
patent: 5639395 (1997-06-01), Lee
patent: 6335520 (2002-01-01), Lee et al.
patent: 6552313 (2003-04-01), Takashige et al.
patent: 2002/0066729 (2002-06-01), Lee et al.
patent: 0 289 032 (1988-11-01), None
patent: 0 516 122 (1992-12-01), None

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