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Re: Trinary Switch Integration with Dual Fans
dayj1 beat me to it, but everything he said is correct. He is the original source of this approach. Sorry, I was a little off on your username.
Just to clarify - at first I thought the diode was backwards so I flipped it around and hooked everything up and it didn't work. Flipped it around the way I have it drawn and it worked. Electricity always looks for the quickest way to ground, so it has to flow through the trinary switch to the ground source on the other side, in the direction of the arrow.
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