I am making a device for a friend that needs to switch 16v power on and off. He wants to switch the power and not the ground. So I bought a MOSFET from Mouser, http://mouser.com/Search/ProductDetail.aspx?qs=sGAEpiMZZMveMCOqFR6qCL5od2AuAbDnWGlf1ag0e1Y=
This is my first shot with MOSFETS. Last night I was playing around with it. I have the Drain tied to ground through a 22k resistor to give it some load. On the Source side I have 12v. I noticed that when I ground the Gate, it turns 'on' the MOSFET and I have voltage on the Drain side. I tried to use 5v to switch 'off' the MOSFET and that didn't do the trick. I had to give the Gate 12v to turn 'off' the MOSFET.
Is this normal? Or do I need to find a 'Logic-Level P Channel MOSFET?' Can anyone recommend a part number is thats the case?
Thanks
Toby
This is my first shot with MOSFETS. Last night I was playing around with it. I have the Drain tied to ground through a 22k resistor to give it some load. On the Source side I have 12v. I noticed that when I ground the Gate, it turns 'on' the MOSFET and I have voltage on the Drain side. I tried to use 5v to switch 'off' the MOSFET and that didn't do the trick. I had to give the Gate 12v to turn 'off' the MOSFET.
Is this normal? Or do I need to find a 'Logic-Level P Channel MOSFET?' Can anyone recommend a part number is thats the case?
Thanks
Toby