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失电报警广泛应用于工农业设备、实验室仪器仪表及家用电器方面.本文介绍的失电报警器,在交流电源停电后能做到无源报警,在熔断器熔断后又能做到有源指示.整个电路稳定可靠,简单实用.电路如下图所示.供给用电器的交流电源经电容
Loss of power alarm is widely used in industrial and agricultural equipment, laboratory instruments and household appliances.In this paper, the loss of power alarm, AC power failure can be done after the passive alarm, the fuse can fuse after the active Instructions. The entire circuit is stable and reliable, simple and practical. The circuit shown below. The supply of AC power through the capacitor