Re: Welders act as resistive Balast ?
In a message dated 9/9/99 3:39:15 AM Pacific Daylight Time, tesla-at-pupman-dot-com
> Hi All,
> In preparation for ballasting my pole pig I have repaired my Brazing
> transformer which I believe is similar to a welder. Having shorted the
> output terminals I get from 3-50mH inductance on the primary at various
> current settings. Testing it by itself (no Tesla coil) on the lowest
> current setting I draw 10A at 200v input i.e 2KVA. My Weston Watt meter
> however registers 1800W. My impression is such a transformer is
> as inductive ballast on the list, yet it consumes so much power. I see no
> need for additional resistive 2-3 Ohm load as often recommended.
> Viv Watts UK.
That transformer should work well as ballast for your pole pig. I originally
used a welder but encountered a 60hz resonance problem and changed to a large
40 amp light dimmer (variac) for the primary ballast. With both systems I
still used an ohm or two of resistance in series with the ballast to get the
control that I wanted. You just have to try it and see how it works.