Re: [CAD_CAM_EDM_DRO] Re: Thoughts on PC Based Control Retrofit....Power Supply, advice?

Carol & Jerry Jankura wrote:

> What about an inductor? low impedance to DC and higher impedance to AC and
> transients. Old radios used to use the dynamic speaker coil as part of the
> power supply filter circuit.

Well, an inductor with enough inductance to smooth out the current pulses would
cause significant phase shift, and thereby make the voltage droop much more
sensitive to load. Those old radios drew a pretty constant current, which is not true
of a stepper drive (or servo drive, either).

Jon