How do transistors amplify the current?

Maddy's picture
Joined: May 28, 2015
How do transistors amplify the current?
June 9, 2015 - 9:03pm

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

Vj's picture
Joined: May 20, 2016
Transistor does not actually
May 20, 2016 - 8:21am

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. 

junaid shahid
junaid shahid's picture
Joined: Nov 23, 2016
Which Transistor you are talking about?
November 23, 2016 - 6:36pm


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.