AC vs DC Ground?
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This really isn't a duet specific question... it's more of a general "best practices" question for wiring DC electronics with an AC power supply.
I think I remember reading (but can't find it now) where someone said that when wiring the duet, the A/C "ground" terminal from the PSU (AC Ground) should be shorted with the PSU's DC Negative (DC Ground or DC-) terminal and the printer chassis (and stepper motor bodies, etc.)
Is this correct?
Thanks
Gary -
Yes that's correct.
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AC ground and DC negative should be connected together at one point. The PSU terminals are a suitable point, but not the only possibility.
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Worth checking your specific PS. Quite a few have the gnds connected internally already.
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...others also have filtering circuits that would be shorted out by linking DC and AC ground?
