A transistor can be used as a switch in electronic circuits. When used as a switch, a transistor has two states: ON and OFF.
-
ON state: When a sufficient voltage is applied to the base of the transistor, it allows current to flow from the collector to the emitter, effectively turning the switch ON and allowing current to pass through.
-
OFF state: When there is no voltage applied to the base of the transistor, it does not allow current to flow from the collector to the emitter, effectively turning the switch OFF and preventing current from passing through.
By controlling the input voltage at the base of the transistor, you can effectively control whether the transistor is in the ON or OFF state, making it a versatile component for switching applications in electronic circuits.
