Some of the larger size Stepper motor drivers will use AC input power.   I
assume all that is needed is a transformer that is rated for the required
current (and a fuse.)

Most people are using these Meanwell-style switching power supplies but it
seems AC power might be better

Questions
Is there is the best type of transformer?   Is there a good supplier?
What about back EMF?   Not knowing how the driver works I wonder what
happens when the motor is breaking.  Can there be an overvoltage problem?

-- 

Chris Albertson
Redondo Beach, California

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