IRF540 Won't turn off

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No, that will not work. Put a 10k to 5V so the transistor is held on and a 1k to your pin so the Gnd (pin low) can turn the MOSFET on (transistor off).

Mike.
Edited.

I will try your suggestion. Thank you Mike and also Gophert for helping.
 
A 10k base resistor is a little on the high side but, yes, just change the 100k for a 1k.

Mike.
 
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