AC 220V power indicator light circuit schematic diagram

AC 220V power indicator light circuit schematic diagram

Many better power strips are equipped with an indicator light. It is simply composed of an indicator light and a resistor. After long-term use, the indicator light will not light up. You can use the circuit below to install and repair it, and of course it can also be used for new installations.

In the picture, a resistor of several hundred kiloohms is used to limit the current and voltage. It is recommended to choose between 200K and 500k. The long-term withstand voltage is DC400V or more. The LED can be Φ3mm or Φ5mm. Other colors are not recommended, mainly red with the highest sensitivity, a few microamps. You can see the light,

V1 cannot be omitted, otherwise the LED life will not be long.