Quote Originally Posted by diycnc View Post
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.
Hi diycnc,

Why not build one yourself.

It is only 5 orso electrical parts.

Grtz Bert.

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