Transistors.

[Marks256]

What is the difference between PNP and NPN? I know that they have different amounts of P and N in them, but i mean electronics wise? Does one activate on negative voltage, and positive on the other? Or what?

 

[_nox_]

Do you know what P and N mean ?

https://en.wikipedia.org/wiki/Semiconductor
https://en.wikipedia.org/wiki/NPN
https://en.wikipedia.org/wiki/Transistor

By the way - try google and wikipedia first!

 

[Marks256]

Do you know what P and N mean ?

Do i need to? Oh, and i have searched Google, but i couldn't find anything that explained it farther than; "The main difference between NPN and PNP are the materials that they are made up of...". So, i figured i would ask here.

 

[_nox_]

Do i need to?

yea you do

I have searched Google, but i couldn't find anything that explained it farther than; "The main difference between NPN and PNP are the materials that they are made up of...". So, i figured i would ask here.

Impossible! Don't lie to me boy!

4th entry in google: https://britneyspears.ac/physics/basics/basics.htm
Keyword: "semiconductor basics tutorial"

Additional things:
- https://britneyspears.ac/physics/crystals/wcrystals.htm
- https://britneyspears.ac/physics/pin/heteronP.htm
-- https://britneyspears.ac/physics/pn/pnjunct.htm
-- https://britneyspears.ac/physics/pin/pin.htm
-- https://britneyspears.ac/physics/pin/nP.htm
-- **broken link removed**
-- https://britneyspears.ac/physics/pin/nNpP.htm
-- ...

 

[RODALCO]

In plain English,

A NPN transistor needs a positive bias on the base to turn it on.
A PNP transistor needs a negative bias on the base to turn it on.

Check data sheets for the hfe for the transistor which is the amplification gain.

Most standard TUN or TUP's as they are called too are BC 547 NPN, BC 557 PNP and equivalents like 337,327, 107,177 etc.
max working voltage 40 to 45 volts, max current 100 mA,

 

[Marks256]

Impossible! Don't lie to me boy!

Lol. You need help. also you spelt "yea" wrong, it is spelt "yeah".
Also, do you have a thing for britney spears? Just joking.

In plain English,

A NPN transistor needs a positive bias on the base to turn it on.
A PNP transistor needs a negative bias on the base to turn it on.

Check data sheets for the hfe for the transistor which is the amplification gain.

Most standard TUN or TUP's as they are called too are BC 547 NPN, BC 557 PNP and equivalents like 337,327, 107,177 etc.
max working voltage 40 to 45 volts, max current 100 mA,

Thanks for the straight forward answer! Ok, i get it now. I have an idea for a circuit. I will try it, then let you know if i was able to get it to work. Thanks a million!