Applications of BJT and FET

Following are the some of applications of BJT and FET :

Applications of BJT

  • It is used in Multivibrator.
  • It is used as an amplifier.
  • It is used in oscillator.
  • Used in timer and time delay circuit.
  • Used in electronic switching circuit.

Applications of FET

FET is widely used in many electronics devices some of the applications of FET are as mentioned below.

  • Used in FM devices for amplification of frequency.
  • Used in memory chips.
  • Used in operational amplifier as variable voltage resistors.
  • Used in TV and FM receivers for mixer operation.
  • Used in constructing mixer circuit .

Difference Between BJT and FET

The transistor is a three-terminal semiconductor device, it is an active device that is used in most of the electronics devices. Transistors can be used as insulators and as conductors as needed. we can use a transistor as a switch and as an amplifier. It can be used with other circuit elements and can be able to amplify current and voltage. We can classify transistors into two types that is Bipolar, and Field Effect Transistor.

BJT is a three-terminal device, it has two PN junctions. It is mostly used analog electronic device because of its high current gain. FET is a very important component in today’s electronic devices. FET is a type of device in which electric fields are used to control the flow of charges or current flowing through a channel. Due to its high input impedance, low output impedance, and high gain capacity, they are widely used in electronic devices.

BJT and FET both are used in many different devices and they have many different characteristics that make them different from each other. In this article, we will go through all the things that make them different and we will get the overview of BJT and FET.

Table of Content

  • What is BJT
  • What is FET
  • BJT vs FET operation comparison
  • Difference Between BJT and FET
  • Applications of BJT
  • Applications of FET
  • Conclusion
  • FAQs

BJT vs FET

Similar Reads

What is BJT?

BJT stands for Bipolar Junction Transistor . It is three terminal semiconductor transistor . Three terminals are Emitter , Base , Collector .The emitter is heavily doped , Base is middle layer and the collector is lightly doped . These three terminal combine to form two P-N junction. These three regions are formed by doping at different level . BJT can be used as amplifier to amplify the signals and as switch in circuit .BJT is current controlled device . BJT can be further classified in two types ....

What is FET?

FET stands for Filed Effect Transistor . It is three terminal semiconductor device . It have Source , Drain , Gate and Body bit mostly body is sorted along with this it have a channel through which current flows from drain to source . It is unipolar because only majority charge carriers are responsible for flow of current .FET can be used as amplifiers , switches or voltage controlled resistor. Based on the type of channel FET can be classified as...

Comparison Between BJT and FET Operation

BJT and FET both have different operations . In BJT both minority and majority charge carriers are responsible for the flow of current .In BJT emitter base junction is forward biased and the collector base junction is reverse biased. In NPN transistor due to less barrier potential in base emitter junction the electron flow from emitter to base and in base only few electron combine with holes because base is lightly doped and have fewer holes and this flow of electron leads to base current .The remaining electron from base region flows to reverse biased collector junction and leads to collector current .according to KCL ....

Difference Between BJT and FET

In following table some of the differences of BJT and FET is mentioned...

Advantages of BJT and FET

Following are the some of the advantages of BJT and FET :...

Disadvantage of BJT and FET

Following are some of the disadvantage of BJT and FET :...

Applications of BJT and FET

Following are the some of applications of BJT and FET :...

Conclusion

From the above article we got an overview of what is BJT and FET their operational difference and advantages and disadvantages along with their applications. Their are many difference between BJT and FET as mentioned above . Although BJT and FET are basic component for many electronics appliances . BJT and FET both are widely used in many devices , we can use them in any device based on the requirement of device. The main function of BJT and FET are for amplification and switching based on our needs they are used....

FAQs on Difference Between BJT and FET

JFET can operate in how many modes ....