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Subject: Re: 12 Volt 30 Amp motor controls

Date: 07/14/00 at 11:28 PM
Posted by: Zeke Sadler
E-mail: bls@glacierview.net
Message Posted:

In Reply to: 12 Volt 30 Amp motor controls posted by Marc Charron on 07/05/00 at 9:16 PM:

Hi Mark;
I currently have a circuit running on my bench that will provide output from a 12 volt storage battery from about 1 volt to about 11.5 volts at up to 40 amps. The smooth control is provided by a 1/4 watt 100k pot. Changing the polarity of the supply to a DC motor will not change the direction of rotation. To do that you must reverse the polarity to either the field or the armature, but not both. To operate these motors located 100 ft from the energy sourse will require large wire to reduce drop in the lines. I can supply a single prototype control for about $450 if you are interested.


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