![]() ![]() 0 volts drop across the output, causing 10 volts to drop across the load resistor.The collector-emitter terminal acts like a closed switch.TRANSISTOR AS A SWITCH In this condition transistor is reffered to as being in saturation. The depletion region across the emitter-base junction shrinks as much as possible. TRANSISTOR AS A SWITCH When the switch is in open position, a voltage is present across base-emitter junction. In this condition, the transistor is reffered to as being in cut-off. The supply of 10 volts drops across the collector output.The emitter -collector terminal acts like an open.TRANSISTOR AS A SWITCH When the transistor is off: The depeltion region across the emitter-base junction is large. TRANSISTOR AS A SWITCH When the switch is in open position, there will be no potential difference between the base and the emitter. Maximum power rating – Low ,Medium ,High.Polarity – NPN ,PNP(BJT’S) N-Channel,P-channel(FET’S).Structure – BJT ,JFET ,IGFET(MOSFET) ,IGBT.Semiconductor device-germanium ,silicon, gallium arsenide ,silicon carbide etc.Transistor is a semiconductor device made of a solid piece of semiconductor material ,with atleast three terminals for connection to an external circuit. ![]()
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