The common emitter amplifier is a three basic single-stage bipolar junction transistor and is used as a voltage amplifier.
Common-collector configuration: signal is injected at the base terminal and output is at the emitter terminal. VCC v i v E R B1 R B2 v B R E R S C B R L V 0 C L Fig. The circuit’s schematic is shown in Figure 5.17. Figure : AC equivalent circuit.Ĭommon-Emitter Transistor Amplifier Design - Cadence Design … Webconsidered as a power amplifier and is often used for driving low load impedances such as speakers, motors, etc. If one of the resistances is not used (for example, in a follower), we can just substitute a value of zero for it.
This includes both AC collector and emitter resistances so it can be used for either swamped or unswamped common emitter amplifiers or for emitter followers.
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