What is Transistor?
A Transistor is an electronic device that replaced the bulky and high power consuming devices called vaccum triodes.
Types:
NPN-P type is sandwiched between n.
Construction of Transistor
Emitter:
-One side of transister and always heavily doped and supplies charge carriers.
Base:
-Middle region of the transistor.Lightly doped than other two.
Collector:
-Region situated opposite to emitter.Collects the charge carriers that cross the base region after emanating from the emitter.
Emitter Junction:
-PN junction formed by the emitter and base.
Collector Junction:
-PN junction formed by the collector and base.
Transistor Action:
1)UnBiased:
-Two depletion regions formed around collector and emitter.
-No currents flows when there is no supply.
2)Biased:
-When two junctions are biased using external DC supply.
-It has 3 modes of operation.
A Transistor is an electronic device that replaced the bulky and high power consuming devices called vaccum triodes.
NPN-P type is sandwiched between n.
Construction of Transistor
Emitter:
-One side of transister and always heavily doped and supplies charge carriers.
Base:
-Middle region of the transistor.Lightly doped than other two.
Collector:
-Region situated opposite to emitter.Collects the charge carriers that cross the base region after emanating from the emitter.
Emitter Junction:
-PN junction formed by the emitter and base.
Collector Junction:
-PN junction formed by the collector and base.
Transistor Action:
1)UnBiased:
-Two depletion regions formed around collector and emitter.
-No currents flows when there is no supply.
2)Biased:
-When two junctions are biased using external DC supply.
-It has 3 modes of operation.
- Active
- Saturation
- Cut-off
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ReplyDeleteGreat breakdown! Understanding basic transistors is a game-changer for anyone diving into electronics. They’re the essential building blocks for controlling current on any circuit board. As a busy pcb wholesaler, I see these tiny components drive massive innovations every day. Thanks for keeping this complex topic so simple!
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