Thread: Simple Current Limiter (LM317)
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13-07-2009 #11When I contacted Astrosyn I was adviced for the best speed and torque to run the steppers at 30-40volts not exceeding 1amp per phase.
One alternative is to use resisters instead of the LM317s. Resisters wont give you a perfect linear current drive, but you may be able to increase the supply voltage to compensate and, since they'll run to a higher temperature before failure, the extra dissipation is less of an issue.
The real answer is to get yourself a better bipolar driver with switch mode current limit (pwm ideally).
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