Hey guys. Im currently running two 12 Volt DC fans in parrallel (one is .25A and the other is .44A). They are hooked up to a AC DC transformer with 12 Volt DC output rated for 1.5A. I'd like to put a variable resistor in the circuit to control the speed of the fans but I'm not sure what kind to use or if it is okay to run the fans at less than 12 Volts. I plan on the circuit looking like the thumbnail below. Where can i find the resistor i'll need and is this okay?
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