So long story short I'm looking for something like a relay that is on until powered, Except a big relay is kind of overkill. Something like a transistor that lets current flow without input and stops flow whilst receiving. The idea of this is so that i can use an Arduino to go between a PWM signal …

Let current flow when signal is low?

tinman13kup October 1, 2017, 2:53pm 8

What device are you talking about? What fan? What is creating the PWM?

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