Electric heating – Microwave heating – With control system
Reexamination Certificate
2006-06-13
2006-06-13
Van, Quang (Department: 3742)
Electric heating
Microwave heating
With control system
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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Ishizaki Emiko
Kitaizumi Takeshi
Moriya Hideaki
Suenaga Haruo
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