Fig 3. Circuit diagram. In this circuit diagram, we’ve employed three sensors and three relays to control three separate appliances. If you wish to extend the control to more appliances, you have the ...

The Cost Dilemma in Touch Switch Systems: Designing systems with touch switches often increases the overall Bill of Materials (BOM) cost. To keep products affordable, design engineers sometimes resort ...

This is a very simple touch sensor switch that is build with the 555 timer IC. You just need to touch the metal plate and the relay gets energised and is kept in this state for about 100 seconds, then ...