Table of Contents [hide]
- 1 What is the difference between BJT and FET transistors?
- 2 What kind of device is FET and BJT?
- 3 What are the main differences between FET and BJT in terms of input impedance?
- 4 Which is better BJT or FET Why?
- 5 What is the main difference between BJT and FET Mcq?
- 6 What is the difference between a BJT and a FET?
- 7 What is a fieldfet transistor?
What is the difference between BJT and FET transistors?
BJTs and FETs are two different kinds of transistors and also known as active semiconductor devices. The major difference between BJT and FET is that in a field-effect transistor only majority charge carries flows, whereas in BJT both majority and minority charge carriers flow.
What kind of device is FET and BJT?
4.6
| FET | BJT |
|---|---|
| Unipolar device: Uses only one type of charge carrier | Bipolar device: Uses both electron and hole |
| Voltage-controlled device: voltage between gate and source control the current through the device. | Current-controlled device: Base current control the amount of collector current |
What are the main differences between FET and BJT in terms of input impedance?
The Difference between bjt and fet
| BJT | FET |
|---|---|
| 3:Input impedance of BJT is very less i.e (1k -3k) | 3:Input impedance of FET is very large. |
| 4:It is the current control device. | 4:It is the voltage-controlled device. |
| 5:It is noisier. | 5:It is less noisy. |
What kind of device is a FET?
The field-effect transistor (FET) is a type of transistor that uses an electric field to control the flow of current in a semiconductor. FETs are devices with three terminals: source, gate, and drain.
Which is better BJT or FET?
It is a majority carrier device. FET is less noisy compare to BJT. It is more suitable for input stages of low level amplifiers….FET.
| BJT | FET |
|---|---|
| Low current gain | High current gain |
| Low input impedance | Very high input impedance |
| Low output impedance | High output impedance |
| Medium Noise Generation | Low Noise generation |
Which is better BJT or FET Why?
What is the main difference between BJT and FET Mcq?
Explanation: BJT usually are built with a thickness of up to 1cm whereas the FET uses a fabrication technique which makes its size in mm.
What is the difference between a BJT and a FET?
BJTs and FETs are two different kinds of transistors and also known as active semiconductor devices. The acronym of the BJT is Bipolar Junction Transistor and FET stands for Field Effect Transistor. BJTS and FETS are available in a variety of packages based on the operating frequency, current, voltage, and power ratings.
What is the difference between bipolar transistors and field effect transistors (FET)?
What is the Difference Between Bipolar Transistors and Field-Effect Transistors (FET)? The main difference between the BJT transistor and FET transistor is the controlling parameter. BJT is current controlled device while FET is a voltage-controlled device. BJT is a bipolar device where the FET is a unipolar device.
What is BJT transistor?
The BJT is a one type of transistor that uses both majority and minority charge carriers. These semiconductor devices are available in two types such as PNP and NPN. The main function of this transistor is to amplify current.
What is a fieldfet transistor?
FET or field-effect transistor is a type of transistor that uses the electric field or voltage to control the current flow. It is unipolar i.e. the current flow only due to majority charge carriers that is either electrons or holes.