The common emitter configuration provides high voltage and power gain and is widely used in amplification.
In common base configuration, the base terminal is grounded or common to both input and output.
The common collector configuration is also called an emitter follower due to unity voltage gain and high input impedance.
The common collector configuration is used for impedance matching because of its high input and low output impedance.
The common emitter configuration provides high current gain (β), often used in amplifiers.
Common emitter configuration provides good voltage and current gain, making it ideal for amplification.
The current gain in CB configuration (α) is less than 1 because most current flows directly from emitter to collector.
Output characteristics show how collector current changes with collector-emitter voltage at constant base current.
Common base configuration is less commonly used for amplification due to its low input impedance and current gain.
In CE configuration, input is applied between base and emitter, and output is taken between collector and emitter.