I have a 24V relay that I would like to turn on with a 24V power supply, but I would like to turn it off when another control signal is on. I am trying to use a JFET to accomplish this. My JFET handles the current and turns the relay on quite well without burning out. I have tried two seperate configurations in an attempt to get it to work (see attached schematics) In configuration 1 the gate-source voltage ends up being about -6.6V even with no power from the control signal and it pinches shut and the relay is off when it's supposed to be on. In configuration 2 the gate source voltage never gets high enough to pinch off when control power is applied. I think configuration 1 is the way to go but I'm clearly missing something to pull down the voltage at the source.