Common Emitter Transistor Graph. Common emitter characteristic curves show how a particular transistor type will react to variations in collector emitter voltage collector current and base current. This process is known as the biasing amplifier and it is an important amplifier design to establish the exact operating point.
You can see below fig 1 shows the common emitter connection of npn transistor. Once these variations are known it is possible to develop a complete picture of how well a transistor will operate in a given amplifier design. Note the reading of base current i b in micro ampere.
In this circuit the base terminal of the transistor serves as the input the collector is the output and the emitter is common to both for example it may be tied to ground reference or a power supply rail hence its.
In the previous tutorial we saw that the standard bipolar transistor or bjt comes in two basic forms. You can see below fig 2 shows the common emitter connection of pnp transistor. This process is known as the biasing amplifier and it is an important amplifier design to establish the exact operating point. For common emitter connection of the pnp transistor we take an emitter terminal is common between the input and output circuit of the pnp transistor.
