From: John Larkin
Subject: Re: NST for tesla coil question
Date: Sat, 11 Jan 2003 14:18:51 -0800
Organization: Posted via Supernews, http://www.supernews.com
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On Sun, 12 Jan 2003 10:29:08 +1300, Barry Lennox
>On Sat, 11 Jan 2003 12:55:06 -0800, John Larkin
>>On Sat, 11 Jan 2003 15:48:13 -0500, "Jordan"
>>> I want to build a small Tesla coil (less than 250W), and I'm planning on
>>>using a NST for power, preferably 5000-7500V at 30mA. There are two types of
>>>NST's, the big heavy ones that run at 60Hz, and the smaller, newer ones that
>>>run at around 20KHz or so. The old ones weigh a lot but the new ones are
>>>tiny, and are much more portable. Can I use one of these newer ones in a
>>>Tesla coil system? Or are the internal components likely to get fried by the
>>>harsh conditions? Thanks for the help!
>>What's an NST?
>It's a Neon Sign Transformer, same as MOT is Mircowave Oven
>Transformer. I suspect the newer ones, which are basically a SMPS, may
>not have enough EMV/transient protection to cope with a Tesal coil.
>Certainly I'm sure the NST maker would disclaim all liability and
>knowledge of such an application. I can just imagine their reaction
>"You want to do what???? "
>A few years back, I built one using an older "France" NST. I don't
>think I'd have the courage to try a newer one.