characteristics of common emitter transistor
Answers
In common emitter configuration, base is the input terminal, collector is the output terminal and emitter is the common terminal for both input and output. That means the base terminal and common emitter terminal are known as input terminals whereas collector terminal and common emitter terminal are known as output terminals.
In common emitter configuration, the emitter terminal is grounded so the common emitter configuration is also known as grounded emitter configuration. Sometimes common emitter configuration is also referred to as CE configuration, common emitter amplifier, or CE amplifier. The common emitter (CE) configuration is the most widely used transistor configuration.
In common emitter configuration, the emitter terminal is grounded so the common emitter configuration is also known as grounded emitter configuration.
The common emitter (CE) amplifiers are used when large current gain is needed.
The input signal is applied between the base and emitter terminals while the output signal is taken between the collector and emitter terminals. Thus, the emitter terminal of a transistor is common for both input and output and hence it is named as common emitter configuration.
The supply voltage between base and emitter is denoted by VBE while the supply voltage between collector and emitter is denoted by VCE.
In common emitter (CE) configuration, input current or base current is denoted by IB and output current or collector current is denoted by IC.