Difference between NPN and PNP transistors

[Yh Hoo]

Help me on transistor !

What is the difference on NPN and PNP transistor ?

 

[yungman]

I am sure you can get a lot or textbooks on this. Here are two links that might help a little. Go Yahoo more.

http://www.differencebetween.net/technology/difference-between-npn-and-pnp/

http://mboffin.net/2009/03/02/the-difference-between-pnp-and-npn-transistors/

 

[Yh Hoo]

Thanks for your suggestion!