This light activated remote switch circuit could be operated using a flashlight beam and could eb used for toggling a specified load from a distance using an external light source such as a flashlight ...

There are a wide range of applications for light sensitive switches: lighting, entrance door, automatic staircase, automatic opening of doors to the action of a ray of light, alarm systems, etc… Many ...

Any time lights went out and a circuit blew in the Schmidt house in Emmaus, chaos would ensue. Someone would have to go down into one of the home’s two basements and jigger circuit breaker switches to ...