MOSFET

MOSFET means metal oxide semiconductor field effect transistor .MOSFET is same as JFET but some are different .Mode of operation of MOSFET is depletion and enhancement but that of is only one depletion mode in JFET. Commonly used biased circuits of MOSFET is lightly different then JFET For proper operation of the semiconductor devices is that ,the gate terminal of JFET must be in reverse biased connection .IT is the main disadvantage of the JFET(i.eJFET has only one positive gate terminal operation for P-channel JFET where as the only one negative gate terminal operation for N-channel JFET.From above discussion we can note that in JFET only decrease the conducting channel of JFET from its zero bias connection gate terminal size or width of conducting channel because JFET working in depletion mode operation.Hence JFET can worked in only one in depletion mode of operation.But we needed FET also worked enhance(i.e increase ) the size or width of conducting channel of its.Such type of field effect transistor is called MOSFET which has worked in both depletion and enhancement mode.

This type of FET which can be worked in the both depletion and enhancement mode as well is called MOSFET.

MOSFET is a very very important semiconductor devices is the electronics and communication field for many application.MOSFET can be used in any of the FET for corved .MOSFET have many advantages then JFET .MOSFET is more sensitive to change in temperature then JFET .MOSFET have higher input impedance where as JFET input impedance have extremely high input impedance.MOSFET is must useful semiconductor devices.