电冰箱的常见故障一般均可由电机是否正常运转反映出来。我们利用电子定时器对电机运转时间进行监控,制成了电冰箱故障报警装置。该装置的控制继电器常闭触点串入电冰箱电源电路。如电冰箱发生故障或因使用不当造成电机连续运转时间超过预控时间或遇电机过载,控制继电器即自动切断电源并发出报警 Common failures of refrigerators are generally reflected by the motor is functioning properly. We use the electronic timer on the motor running time monitoring, made of the refrigerator fault alarm. The device’s control relay normally closed contacts into the refrigerator power supply circuit. If the refrigerator fails or due to improper use of motor continuous operation time exceeds the pre-control time or motor overload, the control relay that automatically cut off the power and alarm