[lug] Aging Surge Protectors

[Timothy Klein]

On Friday 27 August 2004 12:39, Mr Viggy wrote:
> I'm not sure what high end units use, though.  In my applications,
> I used MOV's across switches attached to steppers (needed to shunt
> off the extra current when we swithced the stepper).  They probably
> use some kind of filter
> (just guessing here), similar to a UPS system.
>
> Viggy

They use a capacitor bank to slowly bleed current back onto the mains, 
if I remember right.  The MOVs use a massive shunt to ground, which 
opens up different problems.

Tim
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