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  1. 28-01-2017 #14
    paulus.v's Avatar
    Lives in Transylvania, Romania.
    paulus.v
    Last Activity: 10-12-2021 Has been a member for 9-10 years. Has a total post count of 237. Received thanks 27 times, giving thanks to others 18 times.
    4x3.5A =14A and you have a 12.5A PSU. Am I missing something?

    For a switching power supply you need to be at least 18A.

    (edit: I may be wrong here but Leadshine, among others, recommend adding 1/3 more to the rated motor current when using a switching PSU; 4*3.5*4/3=18.66A).

    For a linear one you will be fine with 10A.

    (edit: a bipolar parallel steppper requires a maximum of 2/3 of the rated amps/phase; 4*3.5*2/3=9.33A).

    I would go with a toroidal PSU as Clive said.
    Last edited by paulus.v; 28-01-2017 at 09:17 PM. Reason: clarifications
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