Re: My PT is loud!

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Finn Hammer by way of Terry Fritz <twftesla-at-uswest-dot-net>" <f-hammer-at-post5.tele.dk>

Drew!

My guess is, the buzzing comes from the transformer.
The primary of the transformer is designed to take 120 volts, and you
cannot exeed this amount by much, without saturating the core of the
transformer. If 60% means 60% of 300 volts = 180 volts, then it only
indicates, that you have got a PT that is wound to very conservative
ratings. Most transformers would have experienced this situation sooner.
(like at 140-150 volts)

You will have to stick with the output of 4200-4500 volts for now, or
get one more identical PT, and run them centertapped style, with the
center tap grounded.

Hope this helped.

Cheers, Finn Hammer 

Tesla list wrote:
 
> Original poster: "Drew Murray by way of Terry Fritz <twftesla-at-uswest-dot-net>"
> <drewallmighty-at-hotmail-dot-com>

snip

 When i turned it up to around
> 60% A really loud buzzing/humming noise would come from either the PT or the
> capacitor, which i have watched vibrate voilently before. It would stay loud
> until i turned everything off. What the heck is happening here? It is a
> 120:4200  -at- 1000va, but i have been feeding 300v into it from a step up
> transformer, so i can get 10500v out of it. 4200 just wasn't enough. and
> could somebody show me how to get the right size capacitor with my zip lock
> bags and aluminum plates? I really need to know this.
>                                                        The Young coiler
>                                                         Drew Murray
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