Construction of BJT,JFET,MOSFET Flashcards
Connectors and Polarity NPN BJT
N Collector +ve
P Base +ve
N Emitter -ve ——–>
Connectors and Polarity PNP BJT
N Collector -ve
P Base -ve
N Emitter +ve
Construction of Base BJT
Thin ,lightly doped ,high resistance
Construction of Emitter BJT
Thickest ,Heavily doped
Construction of Collecter BJT
Moderately doped
BJT means?
Bi polar Junction Transistor
JFET means?
Junction Field Effect Transistor
MOSFET means?
Metal Oxide Semiconductor Field Effect Transistor
Types of BJT
NPN ,PNP
Types of JFET
P Channel
N Channel
Types of MOSFET
P Channel
N Channel
JFET Modes?
Depletion mode only
MOSFET Modes?
Enhancement and Depletion Mode
Connectors and Polarity N Channel JFET
Drain
—->Gate
Source
Connectors and Polarity P Channel JFET
Drain
Diagram of N channel JFET
D
NN
G->PNP
Diagram of N channel MOSFET
Depletion Mode
D +ve NN \+ve G->| |PP----| NN | |---------| S -ve
N channel MOSFET
Depletion Mode
Symbol
Gate Channel Full VCE
P channel MOSFET
Depletion Mode
Symbol
Gate Channel Full VCE———>
N channel MOSFET
Enhancement Mode
Symbol
Gate Channel Broken VCE
P channel MOSFET
Enhancement Mode
Symbol
Gate Channel Broken VCE———->
N channel MOSFET
Enhancement Mode
Diagram
D +ve NN \+ve G->PP-------| NN | |---------| S -ve