I am building a circuit to turn a couple solenoids on and off. I am trying to follow the method on this link http://digitaldiy.io/general-electronics/67-tip-logic-level-fets-p-channel.html#.VRljZ47F-no
What I find
Turn on 12V source 0V arduino pin 2 11.2V solenoid 11.6V emitter pin to ground 2N3904
Changing state 4.6V arduino pin 2 11.2V solenoid 0.08V emitter pin to ground 2N3904
I can't figure out what I'm doing wrong.
Also I have MOSFET NDP6020P as well. If I put that in it works but the data sheet lists Vgs as 8V max continuous.