Disadvantages of transistors configuration
Disadvantages of different configurations of transistors are listed below:
i. Common-Base Configuration:
Disadvantages of common-base configuration are given below:
* The output impedance of this configuration varies when there is change in applied load.
* Common-base configuration offers complex biasing of the circuit in comparison to other types of configurations.
* When input signal reaches power supply limits clipping of signal takes place.
ii. Common-Emitter Configuration:
Disadvantages of common-emitter configuration are given below:
* The output signal of common-emitter signal is inverted with respect to input signal.
* Common-emitter configuration is sensitive with variation in values of components.
* In this configuration a large amount of power is dissipated as heat and hence, are not power efficient.
iii. Common-Collector Configuration:
Disadvantages of common-collector configuration are given below:
* In common-collector configuration the value of input impedance changes with the connected load.
* There is a phase reversal between input and output signal in common-collector configuration.
* This configuration is temperature-sensitive, i.e., the parameters of circuit are affected by the change in temperature.
BJT Configurations
A transistor is also called as bipolar junction transistor or simply BJT. It is called as bipolar as only two types of charge carriers, i.e. majority charge carriers and minority charge carriers are required to perform the operations on transistor. BJT is a current-controlled device as the output voltage, current or power is controlled by the input current in the transistor. As we know, BJT is a three-terminal device , so the three configurations- we will study in this article. The three main configurations are – common emitter , common base and common collector , which has its unique characteristics and applications respectively.
Table of Content
- What is BJT?
- Configurations
- Operating regions of transistor
- Advantages
- Disadvantages
- Applications
- Comparison between CB, CE and CC configurations