| 摘要 |
PURPOSE: A control device of a fan motor for a refrigerator is provided to compression efficiency or evaporation efficiency by maintaining the temperature of a condenser or an evaporator. CONSTITUTION: A control device of a fan motor for a refrigerator comprises a fan motor drive part(100), a speed output part(200), a temperature sensing part(300), and a MICOM(400). The fan motor drive part comprises a reference voltage control circuit(110), a driving voltage control circuit(120), and a drive switching circuit(130). The reference voltage control circuit controls the reference voltage according to PWM(Pulse Width Modulation) signal outputted in MICOM. The driving voltage control circuit applies the driving voltage on the fan motor by controlling the driving voltage according to the reference voltage. The drive switching circuit blocks and applies the reference voltage outputted to the driving voltage control circuit.
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