Re: [CAD_CAM_EDM_DRO] Sizing a power supply

Jon Elson wrote:

> Anyway, the input to a chopper drive generally HAS to be filtered, or
> the inductance of the wires from the power supply will cause enough
> transient spikes to blow transistors very quickly.

What constitutes adequate filtering? The PS I'm using now is home made
per specs for my older CyberPak drivers. There's a decent sized
capacitor in there, would that have the effect of filtering?
And, should I locate a surplus PS in the 70 volt range, how to I tell if
it's properly filtered for stepper use, outside of finding a dedicated
stepper PS?

Jon