How do transistors amplify the current?

Submitted by Maddy on Tue, 06/09/2015 - 21:03

I am using transistors in some circuit and wondering what are properties which make transistors to amplify the current.

Transistor does not actually amplify the magnitude of current. When a small voltage is applied to the Base of NPN transistor, it "allows" the Larger amount of current to be passed, through the Collector to the Emitter. 

  Joined May 20, 2016      3
Friday at 08:16 AM

junaid shahid



Dear there are many types of transistors which are used for the amplify purpose. i.e NPN or PNP etc.

Each have different methodology to operate and execute the operation.


  Joined November 23, 2016      12
Wednesday at 06:16 PM