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<div class="moz-cite-prefix">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.<br>
Something like this might work:<br>
<a class="moz-txt-link-freetext" href="http://www.electricscooterparts.com/speedcontrollers24volt.html">http://www.electricscooterparts.com/speedcontrollers24volt.html</a><br>
<pre class="moz-signature" cols="72">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760</pre>
On 8/20/2014 5:47 PM, Chris Mason wrote:<br>
</div>
<blockquote
cite="mid:CAG6C1qmacE7u7U7csj8sjjBeWfFpi+JgHTLbWvJ=mmhA3s=Qyw@mail.gmail.com"
type="cite">
<div dir="ltr"><a moz-do-not-send="true"
href="http://www.phidgets.com/docs/DC_Motor_and_Controller_Primer">http://www.phidgets.com/docs/DC_Motor_and_Controller_Primer</a><br>
<div><br>
</div>
<div>Read this</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Wed, Aug 20, 2014 at 5:43 PM, Kirpal
Khalsa <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:solarworks@gmail.com" target="_blank">solarworks@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">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............
<div>
rheostat? potentiometer....</div>
<div>I think essentially what i am looking for is a dimmer
switch for a 24VDC motor.....</div>
<div>Thank you!!</div>
<div><br clear="all">
<div>
<div dir="ltr">Sunny Regards,<br>
Kirpal Khalsa<br>
NABCEP Certified PV Installation Professional<br>
Renewable Energy Systems<br>
<a moz-do-not-send="true"
href="http://www.oregonsolarworks.com"
target="_blank">www.oregonsolarworks.com</a><br>
<a moz-do-not-send="true" href="tel:541-218-0201"
value="+15412180201" target="_blank">541-218-0201</a>
m<br>
<a moz-do-not-send="true" href="tel:541-299-0402"
value="+15412990402" target="_blank">541-299-0402</a>
o</div>
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-- <br>
<div dir="ltr">Chris Mason
<div>
<div style="color:rgb(136,136,136)"><span
style="font-size:13px">NABCEP Certified Solar PV
Installer™</span></div>
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<span style="color:rgb(34,34,34)">Solar Design Engineer</span></div>
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<div>869.662.5670</div>
<div>Skype: netconcepts</div>
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