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28-10-2013 #1
Hello all,
I already have the stepper and drives and I'm not sure about the PSU current and voltage.
My four steppers (chinese) have the following specs (if real): nema34, 66mm length, 4A, 0.6Ω, 1.6mH and the drives (chosen to fit my budget) are based on the THB6064 chip: 4.5 A absolute; 4.0 A operating range; 50V absolute maximum; 42-45V? operating.
The toroidal transformer will be manufactured to my specs.
How about two sec. windings at 33V and a total of 630 or 750VA?
Why two windings... I will most probably upgrade the drives to 80V in the future and it will be nice to be able to reuse the toroid.
I also want to build a B/C head or a rotary axis soon and to be powered from the same PSU.
Any help will be greatly appreciated
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