Symbols of Different Transistors

There are mainly 2 families of Transistor i.e. Bipolar and Uni-polar Transistors.
Bipolar Transistors have 2 kind of carriers both holes and electrons while Unipolar Transistors 
have only single carrier either Hole or electrons.

Below are the symbols for BJT, FET, MOSFET, Duel gate MOSFET, Inductive channel MOSFET and Single connection Transistor.

fig a - BJT

fig b - FET

fig c - MOSFET

fig d - Duel gate MOSFET

fig e - Inductive Channel MOSFET

fig f - Single connection Transistor

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