i must be missing something

Thread Starter

MikeJacobs

Joined Dec 7, 2019
95
So I am fooling around with a p channel mosfet

I have a the source terminal connected to a power supply at say 15 volts

I have a small load (resistor) connected to the drain and then to ground.

The gate is being pulsed off and on and has a 10k pull up for the off half cycle.
I don't understand why I am still conducting with the gate pulled up to 15V The mosfet has a VGS th of -3

my VGS for conduction is 0-15 = -15v so it conducts and then pulled up to + 15 and it should no longer conduct but it is

What am I missing?
Part# FDD4141
 

MrChips

Joined Oct 2, 2009
20,183
Welcome to AAC!

Please post a thread title that is relevant to the topic of discussion.
A title such as "P-channel MOSFET not working" would be much preferred than "i must be missing something".
 

MisterBill2

Joined Jan 23, 2018
5,162
Welcome to AAC!

Please post a thread title that is relevant to the topic of discussion.
A title such as "P-channel MOSFET not working" would be much preferred than "i must be missing something".
But presently we are awaiting a response from the TS. The description of the power connections is a bit foggy from where I sit.
 
Top