Re: Secondary winding frustration

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

Original poster: "Terry Blake" <tb3-at-att-dot-net> 

Were those gonna need to be dunked in oil?

Terry Blake

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, January 03, 2004 10:50 AM
Subject: Re: Secondary winding frustration


 > 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.
 >  >
 >  >
 >  >
 >  >
 >
 >