Question

How do you wire a transistor as a switch?

Answer 1

Explanation:

The diagram below shows how to configure a transistor to act as a switch:

1. Let's discuss how to connect a transistor so that it can act as a switch in a circuit now that you are aware of the theory behind why transistors are employed as switches.
2. For bipolar junction transistors, a transistor is a 3-pin device made up of a base, collector, and emitter (BJTs).
3. The output of the component that will turn on the transistor must be connected to the transistor base in order to use it as a switch in a circuit. The circuit's ground will be connected to the emitter.
4. Additionally, the collector will be connected to the circuit's supply voltage as well as the load that the transistor will switch on.

Hence, the output of the component that will turn on the transistor is connected to the base of the transistor when it is used as a switch in a circuit. The emitter should be connected to the circuit's ground. The load that the transistor will turn on as well as the circuit's supply voltage must be connected to the transistor's collector.