Refrigerator working indicator light circuit

Refrigerator working indicator light 　　Installing a working indicator light on the power socket of the refrigerator not only makes it easier to observe the start and stop of the refrigerator, but also increases the aesthetics of the socket. See Figure 1 for the circuit. The induced current on the secondary side of the current transformer is used to light up the light-emitting diode. For the current transformer, you can find a slightly larger transistor radio input or output transformer and modify it according to the data shown in the figure. Pay attention to the insulation between windings. The current limiting resistor R can range from several ohms to several