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Topic: Switching on/off a 120VAC motor (Read 605 times) previous topic - next topic


You don't need a TIP120 to drive a relay, a much smaller NPN transistor will suffice. Unfortunately, all 3 of those transistor types you list are PNP transistors, so not suitable for this application.
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I take a lot of stuff apart and I almost always keep the PCBs, so I'm sure I've got something lying around that has a PNP transistor on it that I can salvage.

Thanks for the responses guys. I know this is just a whim project, but it's helping me to better understand some of these things, how they work and whatnot.

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