Thread: First Proper CNC Router
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19-12-2018 #11
Last Activity: 17-08-2024
As I slowly edge closer to the electronics step, I was wondering why we have to over spec a switch mode power supply.
The stepper drivers we use limit the current to the motors, so why do we need to make sure we choose a power supply that can supply say +20% more current? Surely a driver set to say 2A will only draw 2A from the PSU?
I'm sure there is a very logic explanation.
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