I would be interested to control multiple fans in an application that is outside a computer. I didn't find any interesting product for controlling multiple 12V 120mm fans that I could connect to 120V with an adapter.
So my question is: if I'm going to use a computer fan controller, how could I connect it to 120V AC (assuming that I would be using a computer fan controller with thermal sensors, that could control more than 3 fans)?
If this is a bad idea, what should I use instead of a computer fan controller for multiple 12V 120mm fans?
Best Answer
Your plan of using a computer fan speed controller is acceptable. You should be able to power the fan controller with any regulated 12 volt power supply of sufficient capacity. Just make sure your controller does not also require 5 volts.