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(11) | EP 1 235 464 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Driving Circuit of Turnable Motor in Microwave Oven |
(57) The present invention relates in general to a driving circuit of a turntable motor
in microwave oven, and more particularly to a driving circuit for driving a turntable
motor which is operated at a low voltage. Advantageously, a low-voltage turntable
motor is smaller and more cost effective than in the prior art. The driving circuit
includes: voltage changing means for transforming a commonly used AC power supply
into a low level voltage, such as a transformer (143). Optionally, the driving circuit
also comprises control means (180) for generating a control signal according to a
key signal generated from key input means (170); and switching means (150) for selectively
supplying the low level voltage generated from the voltage changing means (143) according
to the control signal generated from the control means (180).
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