Sometimes it is difficult to find the switch in the dark. To make this work easier, I propose to build into it backlightWe will need three radio components and a little time. . .
Sometimes it is difficult to find the switch in the dark. To make this work easier, I propose to build a backlight into it. Acts as a light source Light-emitting diode VD1, connected to the switch terminals through resistor R1. Diode VD2 protects Light-emitting diode from reverse voltage. When the switch contacts are open, the circuit shows voltage flowing through the cold filament of the light bulb. When the switch contacts are closed, the voltage between them is zero, and Light-emitting diode does not light up.
It is advisable to set resistor R1 to at least 0.5 W, since it generates some heat. As LED I used red super bright transparent 5mm Light-emitting diode.
As a result, this is what I got:
Not only switches can be equipped with such lighting:
If possible, you can replace the LED with a neon bulb. Removing the diode accordingly.
Good luck !
