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  1. S

    Transistor gate voltage

    Yes basically it's gonna load a circuit and let me check the battery and or wiring right now I have a regular switch doing this and I was gonna use a relay but I want to make this as small as possible. Later on down the road I'd like to add some other things to the circuit and a transistor...
  2. S

    Transistor gate voltage

    Yea I didn't think about that for the rheostat. Thanks. would a mosfet be better for this situation? If I used a mosfet do I need to even have a resistor before the gate? Could I just give it the full 9 volts from the battery and hook the - of the battery up to the drain?
  3. S

    Transistor gate voltage

    Sorry I drew it bad. Was in a hurry. The - on the 9 v would go to the emitter
  4. S

    Transistor gate voltage

    Hey guys. I'm new to electronics here and need help figuring out a circuit I'm trying to make. I've attached an image below of the circuit I'm trying to make. Basically this is a tester for automotive purposes.it's a 12v circuit with a 100w rheostat/pot I'm using as a load. I will only be...
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