Table of Contents
- 1 What are the advantages of BJT over FET?
- 2 What are the advantages and disadvantages of BJT transistor vs mosfet transistor?
- 3 What are the advantages and disadvantages of FET?
- 4 What are disadvantages of FET over BJT?
- 5 What are the disadvantages of MOSFET over BJT?
- 6 What are the advantages of FETs relative to BJTs?
What are the advantages of BJT over FET?
This is where BJTs have an advantage. BJTs have greater transconductance, meaning you are able to get more current output per unit power applied. The transconductance of FETs is much lower. So if you use the same amount of power at the input for both a BJT and FET transistor, the BJT transistor will produce more gain.
What are the advantages and disadvantages of BJT transistor vs mosfet transistor?
Differences between BJT and MOSFET
| BJT | MOSFET |
|---|---|
| The input impedance is low | The input impedance is high |
| The switching frequency of BJT is low | The switching frequency of MOSFET is high |
| It is used for the low current application | It is used for the high current application |
What is advantage and disadvantage of FET?
Transconductance is low hence voltage gain is low. It has lower switching time compare to BJT. Special handling is required during installation. When FET performance degrades as frequency increases.
What are the advantages and disadvantages of FET?
Advantages and disadvantages of FET
- FET has a high input impedance of several megaohms.
- FET has less effect by radiation than BJT.
- Temperature stable than BJT.
- Less noise compare to BJT.
- Can be fabricated with fewer processing.
- Smaller in size.
- Longer life.
- High efficiency.
What are disadvantages of FET over BJT?
The main drawback of jfet is the gain-bandwidth product is relatively small compared to conventional transistors. greater susceptibility to damage in its handling. jfet has low voltage gains because of small transconductance . costlier when compared to bjt’s.
What is the difference between a BJT and an FET transistor?
BJTs have greater transconductance, meaning you are able to get more current output per unit power applied. The transconductance of FETs is much lower. So if you use the same amount of power at the input for both a BJT and FET transistor, the BJT transistor will produce more gain.
What are the disadvantages of MOSFET over BJT?
Cons for MOSFET: Not as high of fidelity as BJT, since the gain will vary slightly as you increase the input voltage (that is, it will generate some very weak harmonics). Input capacitance. The higher the gain, the greater the input capacitance thanks to the Miller effect.
What are the advantages of FETs relative to BJTs?
The advantages of FETs relative to BJTs are summarized as follows: FETs are voltage-sensitive devices with high input impedance (on the order of 10 7 to 10 12 Ω). One class of FETs (JFETs) generates lower noise than BJTs. FETs are more temperature stable than BJTs. FETs are generally easier to fabricate than BJTs.
What is the advantage of BJT in amplifiers?
Bjt is capable of handling higher output current for signal output and can have lower output impedance. in amplifiers intended to drive a low impedance input load or provide large amounts of power, this is a huge advantage. many high quality op amps are made with bicmos process using bjt pair for output buffer stage.