Thanks for the info Phil! Good read on design considerations and tuning for a specific output power. This is the unit I picked up "https://drive.google.com/open?id=0BxWKI1NpSt8YfjVHT3V4dWJuRVRBVDNGaURKUGpfYTAzUU1jQWtheW5najVUT1RURUFBYkU"; not sure how this link will work....
Although the Richie article was definitely worth the read and saving, my question is how do I determine the values of each setting on the welder? Is it related to the current level when used as a welder, is there a formula?
Cheers!
Miles
Sent from a tiny device with a tiny keyboard via some cloud...
> On Aug 6, 2015, at 8:46 AM, Phil <pip@xxxxxxxxxxx> wrote:
>
> Miles,
> By using the input variac as the control you are only "indirectly"
> controlling the power - by altering the input voltage to the pig. A better
> way, assuming you run 100% at the moment when it suits you, is to vary the
> power directly by running with full variac but varying the ballast value
> instead.
>
> With any external ballast there is always going to be a favoured mH value
> (sweet spot) that combines with the MMC value to give resonant charging, and
> by altering the ballast setting instead, you can hopefully vary it to find
> the best performance point. (Assuming your ballast covers the correct range)
>
> See Richie's webpage at http://www.richieburnett.co.uk/async.html
>
> He posted on TCML about it as well in June 2001, but that post has dead
> graph links that the post references to, but a complete verbatim copy with
> his original graphs also included can be found here:
>
> http://www.hvtesla.com/richie.html
>
> I've used the system for years
>
>
> Regards
> Phil Tuck
>
> www.hvtesla.com
>
>
>
>
>
>
> -----Original Message-----
> From: Tesla [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of Miles Mauldin
> Sent: 06 August 2015 02:33
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Variable Ballast
>
> I picked up a Lincoln AC 225-S Variable Voltage ARC Welder. Big heavy
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