Power sensing in a microwave oven

Details Power sensing in a microwave oven Power sensing in a microwave oven

F - Mech Eng,Light,Heat,Weapons

24

C

354/70, 327/2.5

F24C 7/02 (2006.01) G01R 21/00 (2006.01) H05B 6/68 (2006.01)

Patent

CA 1167532

POWER SENSING IN A MICROWAVE OVEN ABSTRACT Method and apparatus for power sensing in a microwave oven. A signal proportional to the voltage across the primary of the high voltage transformer and a signal proportional to the current through the primary are multiplied together by a four-quadrant analog multiplier. The output of the multiplier is integrated for a predetermined number of line cycles. The integrated value is then converted to a digital value repre- sentative of power.

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