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FWIW, you can find 240 volt buzz boxes for cheap if you keep an eye on
your local craigslist; usually around $50 is the lowest they will go. I
picked one up for $25 last year in near new condition, it just didn't
come with the welding leads (for TC use, you short the secondary of the
transformer, so you don't need the leads).
As a bonus (assuming you get one with leads), you end up with a free
welder.
Jon
On 01/25/2015 02:01 PM, David Rieben wrote:
> Hi Jim,
>
>> From glancing at your provided link, it seems to me that a 120 volt
>> fed welder for ballasting would be the main limiting factor for
>> your proposed power throughput. Those old style 240 volt input, 225
>> amp Lincoln stick welders work well for this purpose and can
>> process considerably more power than 120 volt run ones. If I recall
>> correctly, Ed Wingate was using 2 of these type of welder units in
>> parallel to ballast the input to his big Maggie power supply. I'm
>> not too sure that I would trust the modern China made version of
>> those Lincoln 225 amp stick welders to withstand the same rigor as
>> the old US made ones, though. The modern foreign made ones look
>> less robust (especially in the main power switch and in the gauge
>> of the welding leads) and "I" would probably look to a local source
>> for a used older style one (locale classified ads, Craigslist,
>> ext.) If possible.
>
> David
>
> jj@xxxxxxxxxxxxx wrote:
>
>> Hello Everyone, I am constructing an 8 MOT power supply. This is
>> controlled by a dual phase 120V, 25 amp variac. I have a Craftsman
>> 120V, 30-95 Amp arc welder which will be used as a current
>> controller. Can this arc welder be installed in the neutral line,
>> and the 2 transformer banks run through it. The power supply
>> circuit is from "*/Phalenor High Voltage Labs",
>> http://kb3ewy.com:8000/old/motpsu.htm. Thank you, Jim /*
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