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Subject: controlling low voltage AC brush motor via computer

Date: 10/31/02 at 2:34 PM
Posted by: Kelly
E-mail: wrightme@tidalwave.net
Message Posted:

Please help! I am trying to control and vary low voltage AC (0-20VAC) at somewhere around 5 amps for an old O gauge model train. I wish to tie into a computer control system and "program" the AC voltage to vary in a feedback circuit possibly tied into the motor to maintain constant speed. I cannot figure out how to vary AC voltage with a DC control signal. The feedback loop is optional, but I am at a loss as to how to accomplish this. Thank you.


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