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Re: [TCML] 1st Run
Really, too much power? Yes, using 4 12kV 30mA NSTs for a total of 120mA.
When I build the next secondary I will start with only one NST and add one at a
time. Thought I had read where folks had powered a 4" with a pig. Is there
some sort rule of thumb like xVA=6" or >?
My calculated resonace capacitance was .026uF, Static Gap LTR .039uF, and SRSG
was .069uF. I am planning on building an SRSG so I thought I could get away
with using .06uF for both configurations. Isn't .01uF rather small?
This secondary was 4.5x20", 960 turns of 26AWG wire. Primary is 1/4" copper
tube. Should I consider larger on either or both?
What's the choke on the HV terminals for?
________________________________
From: "gary350@xxxxxxxxxxxxx" <gary350@xxxxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Mon, July 19, 2010 7:28:55 AM
Subject: Re: [TCML] 1st Run
Looking at your photos it looks to me like you have 4 neons in parallel. I think
you have too much power for a 4" secondary coil.
What size wire are you using on your secondary coil?
I think you should build a larger secondary coil using larger wire. I built a
6" TC once with 4 neons it was too much so I changed it to 3 neons. It burned
holes in my secondary coil that looked like your photo. I was using 15K 30ma
neons.
Build a larger secondary with larger wire. I think your secondary should be no
smaller than 6" diameter maybe 8" for 4 neons and no shorter than 3 ft tall 950
turns of wire. I don't know what size wire your using but if you have plenty of
wire you can wind 2 wires side by side and connect them in parallel at each end
to make a taller coil other wise you need to buy different wire.
Check out my 6" TC it only has 3 neons in this photo. I built this on the work
bench connected everything together with aligator clip wires for a test. It was
making 52" streamers. The cap is .01 up. It has a RQ spark gap with 8 gaps and
a variable speed vacuum fan. I had a ferrite choke coil on each HV terminal
wound with 35 turns of #14 copper insulated house wire.
http://home.earthlink.net/~gary350/tc3.jpg
http://home.earthlink.net/~gary350/tc4.jpg
http://home.earthlink.net/~gary350/tesla2.jpg
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