Using this optical remote switch, you can switch on/off any electrical or electronic load. Like any remote control system, it has a mini transmitter unit (Fig. 1) and a receiver unit (Fig. 2) to ...

Circuit diagram: Measure if these are polarized and if that is the case connect them to the 4N25 opto-couplers as shown in the schematic, where pin 5 has a higher voltage than pin 4.The operation is ...

In this project, we will make an automated ON/OFF Switch for Smart Home with voice assistant Alexa. This Alexa Switch can be connected to the devices that we want, and switch ON/OFF the device with ...

The Infrared Remote Control Switch is a simple electronic circuit that uses an infrared (IR) receiver to detect signals from a standard TV remote and control an electrical load, such as a lamp or ...

This remote operated switch can be used to activate the master switch from the bed without searching for the switch in darkness. It can be activated by the TV remote handset. The security lamps glow ...