| 摘要 |
PURPOSE: A motor driving circuit of microwave oven is provided in which a fan motor has an additional terminal so that a voltage lower than an input voltage is applied to a stirrer motor and a turntable motor, thus allowing low cost manufacturing of microwave oven. CONSTITUTION: A motor driving circuit having a fan motor for rotating a cooling fan which dissipates heat of components and forms air flow, a stirrer motor for rotating a stirrer fan which dissipates electromagnetic wave to uniformly heat the food in the oven, a turntable motor for rotating a turntable, a motor driving circuit unit for driving the fan motor, stirrer motor, and the turntable motor which are electrically connected to each other, the motor driving circuit comprising a voltage lead-in unit for leading-in a voltage lower than that inputted from a fan motor coil, and a motor driving unit for driving the stirrer motor or a turntable motor using a voltage supplied from the voltage drawing unit.
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