Here is a great collection of touch switch circuits. A touch switch is an electronic device that enables us to control a circuit by simply touching a sensor. Simple touch switch circuit with 4011 – ...

This is the circuit diagram of a light activated switch based on National Semiconductors comparator IC LM 311 and a LDR. The circuit below shows a simple application of ldr operated switch. This ...

A switch turns the circuit on or off by completing ... A circuit diagram helps electrical engineers know what to build. Try building simple circuits with your friends and draw diagrams to match ...