Common Emitter Transistor Graph. Circuit diagram to study input and output characteristics of common emitter configuration of a transistor is shown in the figure. The supply voltage between base and emitter is denoted by v be while the supply voltage between collector and emitter is denoted by v ce.
Set the collector emitter voltage v ce to 1 v by adjusting the rheostat r h2. Base current amplification factor β. In electronics a common emitter amplifier is one of three basic single stage bipolar junction transistor bjt amplifier topologies typically used as the voltage amplifier.
Thus the emitter terminal of a transistor is common for both input and output and hence it is named as common emitter configuration.
This type of biasing arrangement is commonly used in the design of bipolar transistor amplifier circuits and greatly reduces the effects of varying beta β by holding the base bias at a constant steady voltage. Base emitter voltage v be is varied by adjusting the rheostat r h1. Common emitter configuration of pnp transistor. The base of the transistor used in a common emitter amplifier is biased using two resistors as a potential divider network.
