Re: Secondary winding frustration

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

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


Most current limited neons use approx 1 volt/turn on the sec., so they use
36 AWG wire with 12,000 turns or more.

If you don't want to go crazy, and can wait until March, we are working a
deal with a major NST mfgr to wind some super neons, ie, 16 kV output at 250
mA with a shunt that can be moved for 200-300 mA output depending on your
duty cycle.

They have to work it in around their normal production work which is 300,000
coils per week so I have to be patient and wait until they can do a small
run for me, 50-100 units.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, January 02, 2004 9:57 PM
Subject: Secondary winding frustration


 > Original poster: "RIAA/MPAA's Worst Nightmare" <mike.marcum-at-zoomtown-dot-com>
 >
 > In the pursuit of ever longer sparks (and for a challenge) I'm building a
 > hand held TC (a la BH-10 vacuum tester only bigger) with a high surge
 > impedence to lower sync rotary gap losses. Realized really high
 > voltages/low currents (30kv+ 10mA) are out of the question for a portable
 > handheld unit due to weight, so I decided to canibalize 1 of my other
coils
 > for its 120-7500/40 nst's. Anyway, I have a winding jig rigged that's
 > adjustable from from ~10-120 rpm assuming I don't go over the 90 vdc
rating
 > of the motor. I'm attemping to wind a 3.75 od acrylic tube with 19" of 36
 > awg (175 tpi/~3300 turns according to my wire table). I was going to use
 > 39awg, but that would have made the Fres down to less than 87 khz with my
 > 8" sphere (want it to where it barely breaks out or doesn't without a
 > breakout point, hope that's big enough) and out of range of the primary.
 > Anyway how is this stuff kept from breaking when winding? It's hard to
find
 > tune the tension to where it's tight but not stretching. I don't want a
 > solder joint (or lots of them) in the middle of the coil so every time it
 > breaks I have to start over (aggravating if this happens with over 1000
 > turns already on it). I'm thinking of adding another moter to unwind the
 > roll (fresh so weighs 10.5 lbs and has quite a bit of inertia). I can't
 > imagine how a commercial winding machine does a clean job of this. Any
 > ideas/suggestions appreciated. Up till now I've never dealt with anything
 > smaller than 30awg.
 >
 >
 >
 >