Tuesday, August 2, 2011

Question # 02 : Difference between Fet and Bjt?

The main difference between Fet and Bjt is that fet is a voltage controller device and bjt is current controller device.Fet has high input impedance and low noise with respect to bjt..
Fet types are:
Jfet And mosfet
Jfet: Jfet stands for junction field effect transistor.Jfet is a voltage controller device.Jfet has two types p type and n type.
Mosfet:Mosfet stands for metallic oxide semiconductor field effect transistor.Mosfet has two types enhancement mode and depletion mode mosfet.
Enhancement mode mosfet has two type :p type and n type
Depletion type mode has also two types:p type and n type

Bjt stand for bipolar junction transistor.Bjt has two types.
pnp bjt
npn bjt

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