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Q: Why is fet less noisy than bjt?
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Why FET produces less noise than BJT?

because the fet is made out of carbon metal oxide and the bjt is made out of silicon or germanium


Why fet is preferred over the bjt?

Disadvantage:Easy to damage when compared to BJT


Advantages of fet over bjt?

mainly i will tell ttwo advantages:- 1)in FET "thermal runaway" never occurs but in bjt it occurs easily...thermal runaway means overheating and damage of fet due to different biasing voltages.. 2) since FET is a unipolar device so only one carrier type is required here ,but bjt is a bipolar device .. 3) FET is smaller in size than BJT of same rating. i mean to say that at the place of 10 bjts we can use 90 FETs ..so area cosumption is less


How biasing of FET differs from biasing of BJT?

in BJT forwardbiasing & reverse biasing are carried out but in FET voltage divider biasing &self biasing are carried out.


What applications would prefer the bipolar junction transistors over the field effect transistor?

bjt is bipolar device whr fet is unipolar....fet is input resistance thts y fet gain is less compared to bjt..... The applications that will prefer bipolar junction transistors to field effect transistors are applications that require fast switching.


Why the voltage gain of an FET amplifier is generally less than that obtained using BJT amplifier?

A FET (Field Effect Transistor) is mainly used when the input signal needs to be isolated from the output. A FET has a very high input resistance, so very little current is required from the input. Voltage gain is not the main objective when using a FET.


Switching speed is high for mosfet or bjt?

generally bjt is faster than fets...because of many intrinsic junction capacitances between ...source and drain and bulk and gate,,,.. but now a days due to advancement in scaling fet is reduced in size sooo much that it became faster than bjt... mosfet is faster because of scaling. small channel length. even though it is slower but distance to be travelled is less


What is the difference between jfet and bjt?

JFET (Junction Field-Effect Transistor) is a voltage-controlled device where current flow is controlled by an electric field across a semiconductor junction. BJT (Bipolar Junction Transistor) is a current-controlled device where current flow is controlled by the amount of current entering the base terminal. JFETs are majority carrier devices, while BJTs are minority carrier devices.


What is bjt and jfet?

BJT is Bipolar junction transistor FET is Field effect Transistor It is a current controlled device It is voltage controlled device


Why bjt is not used of fet in building logic circuit?

land pe char hai


What is the main advantage of an fet transistor over a bjt transistor?

BJT & FET parameters are temperature dependent. In BJT the collector junction resistance decreasing ( collector current increasing) with temperature raise.Due to the highe temperature & current transistor will damage quickly. In FET drain resistance increasing (drain current decreasing ) with increasing temperature.Due to this property it will not damage easily. We can say from the above two statements FET is more temperature stable.FET can use in highe temperature applications.


What are the classification of amplifiers according to transistor configuration?

common emitter using fixed bias