Re: First Light then Failure

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

Original poster: "Alan by way of Terry Fritz <teslalist-at-qwest-dot-net>" <centauri010-at-attbi-dot-com>

Oddly enough. It appears that the swc is what failed. Possibly just a
connection went bad, but I fiddled with it and couldn't get it to start
again. I substituted a .03 uf 35kv maxwell cap for the swc and adjusted the
tuning and it works fine now. I would like however to not use the maxwell
cap because its not free to replace. So I think I'll just build another swc.


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Thursday, January 23, 2003 11:00 PM
Subject: Re: First Light then Failure


 > Original poster: "Barton B. Anderson by way of Terry Fritz
<teslalist-at-qwest-dot-net>" <classictesla-at-netzero-dot-com>
 >
 > Hi All,
 >
 > Before I reply to Alan's question, I want to let everyone know I've
changed
 > my email address to:    classictesla-at-netzero-dot-com
 > I may have missed some TCML emails in the last 2 days. If there was some
 > reply intended for me on any of the posts, please forward them to this new
 > address.
 >
 > Hi Alan,
 >
 > Sounds like the caps or NST died. Given the cap type, I'd probably check
 > the NST on each HV terminal as previously posted. Make sure you check both
 > HV terminals.
 >
 > The racing arcs are likely caused by tuning and/or coupling too high. Both
 > have been reported to cause racing arcs. Since you were in the middle of
 > probing around for the tune point, it's likely the tuning is the main
 > cause. Once you find the component that died and get it working again, I
 > recommend going back to your .015uF SWC and your original tune point.
 > Adding more power does not dictate that you must reduce the cap size.
 > Actually, at .015uF (your original) would have been a pretty good value
for
 > the 60mA. If your coil was close to being tuned with the 30mA NST, and you
 > "reduced" your cap size (for whatever reason), you must "increase" your
 > inductance by adding more turns. When you tapped in, you decreased your
 > inductance and moved further out of tune. I'd recommend going back to what
 > worked at 30mA, add the 2nd NST for 60mA, "don't" remove any caps, and
 > simply fine tune the coil.
 >
 > Take care,
 > Bart
 >
 > Tesla list wrote:
 >
 > >Original poster: "Alan by way of Terry Fritz <teslalist-at-qwest-dot-net>"
 > ><centauri010-at-attbi-dot-com>
 > >
 > >Hello everyone,
 > >I finally got my coil to run tonight. At first I ran it with a 15kv/30ma
 > >NST with a .015uf swc. I got some sparks off the toroid but only about
 > >6-8". So, I put 2 15/30ma nst's in parralel and removed 3 bottles from my
 > >12 bottle geek group salt water cap. After that I could get no spark from
 > >the toroid. SOmetime I got nothing and sometimes when I moved the tap in,
 > >i got sparks but they all seemed to be going down my secondary. I kept
 > >adjusting the tap looking for a good spot and then finally it "popped"
and
 > >then nothing would happen when I plugged it in. I'm praying I didn't
break
 > >the NST's but I'm afraid that might be it. Anyway, what was happening
here?
 > >
 > >Thanks,
 > >Alan
 > >
 > >
 > >
 >
 >
 >
 >
 >
 >