Hi all
I was after some help regarding n channel fets v bipolar npn.
I want to conduct a simple experiment so I can understand the differences when using these transistors as switches.
I want to switch an led powered from 9V using both transistors.
So basically 2 different circuits.
One with an fet and the other with a npn.
I want some help with the mathematics.
I know the npn will need a base resistor and collector resistor. I want to use 3v to switch the transistors on.
I think for the fet I need a gate voltage greater then the threshold voltage and I might need a logic level fet.
Can anyone help?
Thsnks
I was after some help regarding n channel fets v bipolar npn.
I want to conduct a simple experiment so I can understand the differences when using these transistors as switches.
I want to switch an led powered from 9V using both transistors.
So basically 2 different circuits.
One with an fet and the other with a npn.
I want some help with the mathematics.
I know the npn will need a base resistor and collector resistor. I want to use 3v to switch the transistors on.
I think for the fet I need a gate voltage greater then the threshold voltage and I might need a logic level fet.
Can anyone help?
Thsnks