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  1. 02-11-2019 #11
    Kitwn's Avatar
    Lives in Don, Tasmania, Australia.
    Kitwn
    Last Activity: 22-07-2025 Has been a member for 7-8 years. Has a total post count of 984. Received thanks 118 times, giving thanks to others 52 times.
    This is quite a good introduction...
    http://www.skillbank.co.uk/psu/

    The stepper driver must be rectifying the AC into DC anyway, though with little or no smoothing. My guess is that making drivers that can be fed with AC is done merely to reduce the cost of the power supply. Whether a smoothed DC supply noticeably reduces motor vibration compared to AC will need some research.

    kit
    An optimist says the glass is half full, a pessimist says the glass is half empty, an engineer says you're using the wrong sized glass.
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