Title: Microwave oven power supply circuit

Abstract: A microwave oven having a defrosting means including a bidirectional thyristor provided in a power source circuit and a control circuit for on-off controlling the thyristor, whereby microwave radiation can be intermittently irradiated on the foodstuff to obtain effective defrosting. Also, surge current at the time of start and end of the microwave oscillation is prevented.

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Inventors: Nagamoto, Schun-ichi (Nara, JA)

Application Number: 488683
Filing Date: 1974-07-15
Publication_date: 1976-03-09
Assignee: Matsushita Electric Industrial Company, Ltd. (Osaka, JA)
Primary Class(es): 219/715 219/703
Other Classes:
US Patent Ref:

3546483	Dec, 1970	Lundin	219/10.
3735237	May, 1973	Derby	219/10.
3780252	Dec, 1973	Crapuchettes	219/10.
3784781	Jan, 1974	Foeustnev et al.	219/10.
3842233	Oct, 1974	Lamb	219/10.

Other Refs:
Primary Examiner: Reynolds, Bruce A.
Assistant Examiner:
Attorney: Stevens, Davis, Miller & Mosher