If you’re new to electronics, the idea of a switch can be confusing. It’s a device that allows or prevents current from flowing through an electrical circuit by being open or closed. Switches are used in all kinds of devices—from light bulbs and microwave ovens to home security systems and computers—and they all work on the same basic principle: closing or opening an electrical circuit for power flow.
A switch is a mechanical device that opens and closes electrical circuits.
A switch is a mechanical device that opens and closes electrical circuits. It is a form of gate that can be either opened or closed to allow the passage of current. When the switch is in the open position, it allows electricity to flow through the circuit; when it’s closed, current cannot pass through.
