Field-effect transistor: Difference between revisions

Revision as of 01:42, 10 October 2011

Revision as of 01:43, 10 October 2011

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<ref>http://commons.wikimedia.org/wiki/File:Basic_JFET.png</ref>

<ref>http://commons.wikimedia.org/wiki/File:Actual_JFET.png</ref>

[[File:FET1.01.jpg|thumb|Three terminal FET]]

<ref>http://commons.wikimedia.org/wiki/File:FET1.01.jpg</ref>

FET terminals are:

Line 33 ⟶ 30:

By applying voltage to G, we can control ID.

Conventional current entering the channel at G is designated by IG.

[[File:FET1.02.jpg|thumb|Three terminals of FET]]

<ref>http://commons.wikimedia.org/wiki/File:FET1.02.jpg</ref>

<ref name=Prathamesh>

Line 188 ⟶ 182:

<br />

Power MOSFET's are superior than BJT's to be used in audio amplifier.Reasons for this are their negative transconductance co-efficiant and lack of second breakdown.<ref>{{cite book|last=Duncan A. Grant|first=John Gowar|title=POWER MOSFETS theory and application|year=1989|publisher=A Wiley-interscience publications|___location=USA|pages=323-326}}</ref>

* As an Amplifier

see also [[FET amplifier]]

Due to its high input impedence it can be used as an amplifier.

It is divided in three types.

<ref>

{{cite book

|author=Allen Mottershead

|title=Electronic Devices and circuits

|year=2003

|publisher=Prentice-Hall of India,New Delhi-110001

|ISBN-81-203-0124-2}}

</ref>

== Uses ==