[RE-wrenches] Fan Controller

[Ray Walters]

The same PWM control used on charge controllers is also used on electric 
vehicles for DC motors. We've done many different ones and different 
voltages and sizes.
Something like this might work:
http://www.electricscooterparts.com/speedcontrollers24volt.html

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 8/20/2014 5:47 PM, Chris Mason wrote:
> http://www.phidgets.com/docs/DC_Motor_and_Controller_Primer
>
> Read this
>
>
> On Wed, Aug 20, 2014 at 5:43 PM, Kirpal Khalsa <solarworks at gmail.com 
> <mailto:solarworks at gmail.com>> wrote:
>
>     Hey Folks....we have a customer with a 24VDC fan for venting a
>     green house and we would like to be able to control speed on it
>     instead of just on/off...The fan draws 22 Amps at 24VDC....Any
>     suggestions on how to regulate speed? The idea is to have the fan
>     pull less than the 22 amps............
>     rheostat? potentiometer....
>     I think essentially what i am looking for is a dimmer switch for a
>     24VDC motor.....
>     Thank you!!
>
>     Sunny Regards,
>     Kirpal Khalsa
>     NABCEP Certified PV Installation Professional
>     Renewable Energy Systems
>     www.oregonsolarworks.com <http://www.oregonsolarworks.com>
>     541-218-0201 <tel:541-218-0201> m
>     541-299-0402 <tel:541-299-0402> o
>
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> -- 
> Chris Mason
> NABCEP Certified Solar PV Installer^(TM)
> Solar Design Engineer
> Generac Generators Industrial technician
>
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