| 摘要 |
A refrigerating compressor control circuit installed in a refrigerator and connected between AC power supply and the compressor motor of the refrigerator and adapted for controlling the operation of the compressor motor, the refrigerating compressor control circuit including a CPU (central processing unit), a current phase detector, a voltage phase detector, a trigger circuit having a TRIAC, a voltage level detector, a high current detector, a low current detector, an input filter, and an output filter. The CPU starts the compressor motor a length of time delay after a sudden shutdown, preventing damage to the compressor motor due to high pressure of cooling agent, and controls the output voltage value subject to the status of the load at the compressor motor.
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