previous post

RICH DAD POOR DAD BOOK REVIEW

  RICH  DAD  POOR  DAD  BOOK REVIEW This is amazing book.   • Explodes the myth that you need to earn a high income to become rich • Challenges the belief that your house is an asset • Shows parents why they can't rely on the school system to teach their kids about money • Defines once and for all an asset and a liability • Teaches you what to teach your kids about money for their future financial success It's been nearly 25 years since Robert Kiyosaki’s  Rich Dad Poor Dad  first made waves in the Personal Finance arena. It has since become the #1 Personal Finance book of all time... translated into dozens of languages and sold around the world. Rich Dad Poor Dad  is Robert's story of growing up with two dads — his real father and the father of his best friend, his rich dad — and the ways in which both men shaped his thoughts about money and investing. The book explodes the myth that you need to earn a high income to be rich and explains the difference between working

working of transistor

What is Bipolar junction transistor ? 

Working of NPN Transistor

Forward bias is applied to emitter-base junction and reverse bias is applied to collector base junction.

Connection diagram of NPN transistor

The forward bias in the emitter-base junction causes electrons to move toward base. This constitute emitter current, IE .

As the electrons flow toward P-type base, they try to recombine with holes. As base is lightly doped only few electrons recombine with holes within the base.

These recombined electrons constitute small base current, IB.

The remainder electrons crosses base and constitute collector current.
                                                 IE =IB + IC


Working of PNP Transistor

Forward bias is applied to emitter-base junction and reverse bias is applied to collector-base junction.

Connection diagram of PNP transistor

The forward bias in the emitter-base junction causes holes to move toward base. This constitute emitter current, IE .

As the holes flow toward n-type base, they try to recombine with electrons. As base is lightly doped only few holes recombine with electrons within the base.

These recombined holes constitute small base current, IB .

The remainder holes crosses base and constitute collector current.



Transistor Symbol

Symbol of NPN transistor





Symbol of PNP transistor





Transistor Operation Modes

  • Active Mode
Base-Emitter junction is forward and Base-Collector junction is reverse biased.

  • Saturation Mode
Base-Emitter junction is forward and Base-Collector junction is forward biased.

  • Cut-off Mode
Both junctions are reversed biased.



Transistor Connection

Transistor can be connected in a circuit in following three ways:-
  1. Common Base
  2. Common Emitter
  3. Common Collector



Related topics>>>




















Comments

Post a Comment

If you have any doubts, please let me know

Popular posts from this blog

Ideal Transformer (1-phase) Operation Under Load

RICH DAD POOR DAD BOOK REVIEW

Compensating Winding