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Art Freas 07-01-2018 11:53 PM

PWM and Power Supply
I have a powder booth I have put together but can't get the fan right. I would like to use a motorcycle radiator fan to do this but want to adjust it. Looking to us a fan of this type.

Size: 12 Inch, Thickness: 2.5 Inch
10 Blades, 12 Volts, 6.6 AMP DRAW, 80W

To adjust the speed I need a PWM and power supply. Anyone have any recommendations as to where I would best be able to get advice and get the units themselves.

Thanks much.


Dave Bross 07-02-2018 06:10 PM

Google "electronic surplus" and you'll find a bunch of suppliers of used and salvaged goodies.

There are automotive and RV rheostats and similar things for 12v systems. Something like the dash light dimmer switch for cars comes to mind. I don't know if it is rated for that load.

surplus center and other general surplus and salvage dealers often have interesting things.

Art Freas 07-02-2018 07:01 PM

Standard rheostats won't work well with a motor, tends to burn them out. A PWM will give the right voltage in pulses so the motor lasts. Good steer on the surplus folks, will give that a try. Many thanks.

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