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Transistor as Switch in Saturation Region

Transistor as Switch Working Animation

How a Transistor Switch Works

The transistor in Figure is used as a switch to turn the LED on and off. For example, a square wave

Transistor as Switch in Cut off region

Transistor as a Switch Working Principle

The below Figure illustrates the basic operation of a BJT as a switching device. In part (a), the transistor is in

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