Advantages and Disadvantages of BJT Amplifier
The advantages and disadvantages of BJT amplifier are shown below:
Advantage
- The gain bandwidth of the bipolar junction transistor (BJT) is broad.
- High frequency performance is greater with the BJT.
- The voltage gain of the BJT is superior.
- Applications requiring low or high power can use the BJT.
- The current density of the BJT is high.
- The forward voltage drop is minimal.
Disadvantage
- More noise was created by the bipolar junction transistor (BJT).
- Radiation has a greater effect on BJT.
- The thermal stability of BJT is low.
- BJT switches at a low frequency.
- Its base control is extremely intricate. Thus, it needs to be handled carefully and could cause confusion.
BJT Amplifier
Bipolar Junction Transistors (BJTs) have a long and diverse history of use in the electronics industry. They are used as a switching mechanism and for amplification in a wide range of applications. BJTs are highly sought after in power electronics because of their low turn on/off times, low voltage drop, high power, voltage, and current ratings, as well as their little leakage current when in blocking mode. In power electronics, they are mostly used for switching applications. The biasing conditions of the junctions dictate the three different modes of operation that bipolar junction transistors (BJTs) display: cut-off, active, and saturation.
A semiconductor device with three layers and three terminals that alternate between p-type and n-type layers is called a bipolar junction transistor (BJT). Three terminals in the BJT is the Collector, Base, Emitter. The arrangement of their layers distinguishes NPN and PNP, the two varieties of BJTs. The base of an NPN BJT is built of p-type material, whereas the emitter and collector are made of n-type material. On the other hand, the base of a PNP BJT is constructed of n-type material, while the emitter and collector are composed of p-type material. The collector-base junction (CBJ) and base-emitter junction (BEJ) are the two junctions found in a BJT.
Table of Content
- What is BJT Amplifier?
- Working Principle
- Types
- Characteristics
- BJT Amplifier Formula
- DC Analysis of BJT Amplifier Circuits
- Advantages and Disadvantages of BJT Amplifier
- Application of BJT amplifier