Hi all, I need to control the speed of a handful of small pumps independently. The speed is directly related to the voltage supplied. I can't really use pwm and the voltage to the pumps must vary between 3 and 12 volts. I'm thinking something like a buck converter with some kind of signal input to change the output. Ibelieve there must be some off the shelf product that can achieve this, do you guys know this kind of thing?
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