Finally fit a supply input socket and, optionally an on/off switch at the rear/side of the enclosure. WARNING! Great care should be taken when working with this led night lamp circuit since it is ...

In theory, a LED light should last for ten years or so, unlike the typical 4W incandescent lamps used in night lights that seem to burn out in only a few months. But as engineer and founder of the ...

The aquarium led light circuit uses LDR as light sensor for automatic switching of the circuit. During day time LDR has very low resistance so that IC1 remains stand by. In the night, LDR offers high ...