Alright,
Thanks again for everyone's assistance so far. I have another question, same topic...
I have tested a PNP powerFET with an LED @ +5v 350mA...
Theory:
0v turns on the LED while +5v turns off the LED.
The issue I face is that the LED is not turning completely on at 0v. I notice slightly more light output when I connect the LED directly to the 4.7Ohm resistor I'm using to limit current, rather than going through the MOSFET.
Attached is the datasheet for the IRF9540n I have.
https://www.electro-tech-online.com/custompdfs/2009/07/irf9540n-1.pdf
Is this because the mosfet is listed as having a Vgs threshold of -2v to -4v?