Line voltage sensing for microwave ovens
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United States of America Patent
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-
May 18, 1993
Grant Date -
N/A
app pub date -
Sep 4, 1990
filing date -
Sep 4, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A microwave oven with a power supply including a transformer having primary and secondary windings, with the primary winding having a plurality of input connections and a secondary winding being coupled to a magnetron. The microwave oven includes a circuit the magnitude of a line voltage supplied to the microwave oven and, in response thereto, for coupling the line voltage to a corresponding one of the input connections to regulate the voltage provided across the secondary winding to the same voltage level regardless of the magnitude of the line voltage.
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