When I picked up mine, I just took it to a local radiator repair workshop and asked them to tell me about it. They all have catalogs of these blowers, as this is necessary fo repairs, and they'll be able to tell you what wires do what.
Yes, you will be able to run it off your PSU, but my guess is that it might be FAR less noisy to run it at 5V, than at 12V.
Car blowers are typically rated for around 400-1000 CFM when run at 12V at full speed, and they will draw tremendous amount of power (>200W) when doing so. In order to use them you must find a way to either drive them at their lower speed as well as drive them at a lower voltage. My blower at 12V on its lowest setting is still quite noisy (quieter than an 80mm delta though by a long shot). I need to run it at 7V and at its lowest (of 3) settings, and then it really comes into its own, pushing about as much air through the heater-cores as 2 high-speed 12cm fans would do, all for about the same level of noise as a medium speed 80mm case fan (~30dBA at a guess).
|