| 摘要 |
PURPOSE: An electrostatic potential power supply for a microwave oven is provided to maximize the noise resistance of a microprocessor by designing a circuit for using electrostatic voltage and forming same potential for a common ground between the microprocessor and the circuit. CONSTITUTION: A power supply(2100) converts AC voltage into electrostatic DC voltage. A microprocessor(M20) receives the voltage from the power supply(2100) to perform control operation. An oscillator(2700) receives the voltage from the power supply(2100) to supply clock signals to the microprocessor(M20). A relay(2300) receives the voltage from the power supply(2100) to control large current through small current. Ground terminals of the power supply, the microprocessor, the oscillator and the relay are commonly used.
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