Hey i have this P channel mosfet http://www.zeus-electronics.com/datasheet/IRF9540N.PDF but for some reason I cannot get it to turn off. I have tried to make a simple setup like this:
The drain is connected to 9 V. the source is connected to an LED that goes to ground. The gate is connected to 9V. but the mosfet is on no matter what the gate is connected to.
so if anybody know what the problem is please right. I have trite it with more than one mosfet but they all give the same result.