Transistor Emitter follower operation
The transistor connected in the common -collector configuration, with input and output signal appearing at base and emitter terminals, respectively. This type of circuit often referred to as an Emitter follower circuit. Below circuit shows a transistor connected in a emitter follower configuration. Although the collector terminal at + V cc volts it is shorted to ground for ac signals,the transistor is connected as a common collector circuit element Base current flows into the transistor of above circuit when a positive input signal rises above the base emitter turn on voltage level. The potential difference across the base and emitter terminals is equal to the value of V BE(ON) . Thus the output potential is slightly less positive than the input- voltage level and follows closely the voltage excursion of th...