Re: To parallel or not to....

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

Original poster: "Jason by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jasonp-at-btinternet-dot-com>

Ken,

I have heard about paralelling NSTs and have done so myself for he last year
or so - a 10/85, and two 10/35s in paralell. You cannot paralell different
voltage NSTs - it overvolts the one with the lower voltage rating, and
causes back current flow, etc. I have never heard of seriesing NSTs - I
would imagine that the excessive voltage at one end would destroy the NST.
What you COULD do was to build a permenant transformer to take the 15/30
neon down to a 12/30, and then run them in paralell off the same variac -
much safer than with 2 variacs. IMHO it depends on whether or not you can
get more - if you can get another 15KV neon the get one, but if not, make
the most of what you have got.

Best Regards,

Jason
[UK Geek #1139 Rank G-2]
[HV / Tesla / Laser / Comp]
[  www.thegeekgroup-dot-org   ]
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, September 23, 2002 6:18 PM
Subject: To parallel or not to....


> Original poster: "Ken's Mail by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<bluewaterdiver-at-earthlink-dot-net>
>
> In my readings I found a mention of putting in series different voltages
> NST's and coming up with odd ball voltages like 28kv.
>
> The question is, are NST's of different voltages capable of being
> paralleled??
>
> I have a 15/30 and a 12/30. I mis-bid on the 12/30 and now I have it!!!
>
> Would I have to do something like running stacked variacs, one to each
> NST, set to make each have equal output?? Would I have to (Not my
> favorite option) strip windings off the 15/30 to make it a 12/30??
>
> Or should I just wait and build my MOT PSU??
>
> Any better suggestions out there??
>
> Ken
>
>
>
>