TRANSISTORS

parkagendaΗλεκτρονική - Συσκευές

2 Νοε 2013 (πριν από 3 χρόνια και 11 μήνες)

85 εμφανίσεις

TRANSISTORS

TYPES OF TRANSISTORS


PNP TRANSISTORS


NPN TRANSISTORS


FIELD EFFECT TRANSISTOR ( F.E.T )


UNI JUNCTION TRANSISTOR ( U.J.T )


SILICON CONTROLLED RACTIFIER ( S.C.R )


CONSTRUCTION


TRANISTOR IS A CONNECTION OF TWO
DIODES.


PNP TRANSISTOR :
-

N TYPE SEMI CONDUCTOR
SANDWICH BETWEEN TWO P TYPE SEMI
CONDUCTORS.


NPN TRANSISTOR :
-

P TYPE SEMI CONDUCTOR
SANDWICH BETWEEN TWO NTYPE SEMI
CONDUCTORS.



PNP & NPN TRANSISTOR HAS THREE TERMINAL

( NEXT PAGE )




TERMINALS NAME ARE EMITTER, BASE &
COLLECTOR


PNP & NPN TRANSISTOR ARE BIPOLAR
TRANSISTORS (BJT)


TRANSISTOR IS SEMI CONDUCTOR DEVICE


TRANSISTOR MAKE FROM SILICON & GERANIUM
SEMI CONDUCTOR MATERIAL


FIELD EFFECT TRANSISTOR


F.E.T HAS THREE TERMINALS


THESE TERMINAL KNOWN AS GATE,DRAIN &
SOURCE.


F.E.T IS UNI POLAR TRANSISTOR

UNI JUNCTION TRANSISTOR


UJT HAS THREE TERMINALS


THESE TERMINAL KNOWN AS BASE 1, BASE 2 &
EMITTER


U.J.T IS UNI POLAR TRANSISTOR

SILICON CONTROLLED RACTIFIER


S.C.R HAS THREE TERMINALS


THESE TERMINAL KNOWN AS ANODE, CATHODE
& GATE


S.C.R IS UNI POLAR TRANSISTOR.

WORKING OF TRANSISTOR


PNP & NPN TRANSISTOR HAS TWO JUNCTION,
EMITTER BASE JUNCTION & COLLECTOR BASE
JUNCTION


F.E.T,S.C.R,U.J.T HAS ONE JUNCTION CURRENT
FLOW IN FROM ONE JUNCTION & DIRECTION

APPLICATION OF TRANSISTOR


AMPLIFIER


SWITCH


CONTROLLED PROCESS