| 摘要 |
PURPOSE: A compressor operation control circuit of a drinking water cooling device is provided to apply a unit controlling a shut-off of a sensor voltage capable of shut-off and control of the sensor voltage being input to a MICOM(Micro Computer) from a sensing sensor, thereby enabling to detect the existence of a current leakage from the compressor and the ground. CONSTITUTION: A compressor operation control circuit of a drinking water cooling device comprises a sensor(120), a MICOM(140), and a compressor driving relay(150). A resistance value of the sensor is varied depending on the extent in which cooling water is frozen. The MICOM outputs relay-on driving control signals if a correction voltage(Vc) is over a maximum reference sensor voltage(Vs) set in advance. The compressor driving relay shut-off a power supply to a compressor(C1) by being on-off switched and controlling the operation of the compressor based on relay-on driving control signals and relay-off driving control signals. [Reference numerals] (110) Transformer; (131) Sensor voltage distributing unit; (132) Input voltage distributing unit; (140) MICOM; (AA) AC input; (BB) Compressor
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