Re: Pig current limiting

Original Poster: "D.C. Cox" <DR.RESONANCE-at-next-wave-dot-net> 

to: Marco

A good "rule of thumb" for filter cap size in this resonant charging
scenario is 10 x resonant cap size.  This will provide adequate energy
the tank circuit.

> >Original Poster: "Marco Denicolai" <Marco.Denicolai-at-tellabs.fi>
> >
> >The tank supply I am designing uses a 3-phase pig transformer and a 6 diode
> >bridge to charge a filter capacitor of 15 uF. After that there is a reactor
> >that charges the primary capacitor usign resonant charging.

Actually, if the filter cap droop is to meet the 1% spec, 
the filter cap must be at least _50 x_ the size of the 
primary cap  (1% in voltage is 2% in energy).

A 10 x filter cap would droop over 5% in voltage.