Re: [CAD_CAM_EDM_DRO] Gecko's ok on a switching power supply

wanliker@... wrote:

> In a message dated 2/23/2002 12:05:23 AM Mountain Standard Time,
> elson@... writes:
>
> >
> > The fix is to add external capacitor banks (which could destabilize
> > some regulators) or a braking resistor circuit that switches on
> > when the voltage rises above a safe level.
> >
>
> What would happen if you used a diode isolated external capacitor on a
> regulated power supply?
> Wouldn't this give you the capacitor reserve, and also stop the feedback to
> the supply itself? and thus isolate the crowbar, and regulator circuits.

Hmmm, cute idea. It definitely solves the problem of pumping up the
output of the regulated supply, and gives a surge reserve. The
possible downfall is the diode switching on and off as the motor load
varies could cause some instability of the regulator. it almost certainly
would work, but might cause some voltage fluctuations. These would
probably be small, but the current surges could be bigger. Still, if you
already HAVE the supply, it would be worth trying it.

Jon