Transistor Characteristics | Học Điện Tử

In physics, the graph representing the relationships between the current and the voltage of any transistor of any configuration is called Transistor Characteristics. Any two-port network which is analogous to transistor configuration circuits can be analyzed using three types of characteristic curves. They are

  • Input Characteristics: The curve describes the changes in the values of input current with respect to the values of input voltage keeping the output voltage constant.
  • Output Characteristics: The curve is got by plotting the output current against output voltage keeping the input current constant.
  • Current Transfer Characteristics: This characteristic curve describes the variation of output current in accordance with the input current, keeping the output voltage constant.

Configuration Of Transistor

Any transistor circuit can be designed using three types of configuration. Three configurations of the transistor are based on the connection of the transistor terminal. The three types of transistor circuit configurations are:

  • Common Emitter Transistor
  • Common Base Transistor
  • Common Collector Transistor(emitter follower).

Each of these three circuit configurations has its own characteristics curve. Based on the requirement the type will be chosen for the circuit.

You may also want to check out these topics given below!

  • Applications of transistors
  • Bipolar Junction Transistor
  • Transistor Working
  • Difference Between NPN And PNP Transistors
  • FET Transistor

Common Emitter (CE) Configuration of Transistor

In CE Configuration, the Emitter terminal of the transistor will be connected common between the output and the input terminals.

Common Base

Common Emitter (CE) Configuration of Transistor

The transistor characteristic under Common Emitter configuration is as follows:

Common Base (CB) Configuration of Transistor

In CB Configuration, the base terminal of the transistor will be connected common between the output and the input terminals.

Common Collector

The transistor characteristic under Common Base configuration is as follows:

Common Collector (CC) Configuration of Transistor

In CE Configuration, the Collector terminal of the transistor will be connected common between the output and the input terminals.

Transistor Characteristics

The transistor characteristic under Common Collector configuration is as follows:

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