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Re: Help with my First Coil



Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>



Yes, this is the basic design process for almost all coils we design and build.

Dr. Resonance


WOW, Is this a proven design? I have been in electronics for 40 years and
just never got around to building a coil. After my initial investment, I
want to make sure that this works the first time with minimal additional
expenses. Any Ideas on where to get the Tungsten for the RSG?

Oh yea , I LIKE MY LITTLE PIG!!!

Victor


-----Original Message----- From: Tesla list [mailto:tesla@xxxxxxxxxx] Sent: Monday, October 03, 2005 3:31 PM To: tesla@xxxxxxxxxx Subject: Re: Help with my First Coil

Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>



Use a height to dia ratio of 4.5:1.  This fixes the length at 90 inch
winding length for a 20 to 24 inch dia coilform.  Divide this length
by 1,400 turns to get the wire OD --- determines wire gauge.  Use
silver-tinned stranded wire with 1 kV PVC insulation. It should work
out around 18 AWG at this power level.  Torroid should be 52 inch dia
x 16 inch cross section ---
can be made with metal mesh.  Contact me off-list for construction photos.

If you are going high power you must use a large dia sec coil form to
extract the most performance possible --- why waste the energy?    V
= -L Di/dT so to maximize L (inductance) it goes up as square of the
coilform radius and also the square of the number of turns, ie, L =
r^2* n^2 / 9a + 10b.

16 inch dia x 10 electrode RSG running at 3450 RPM or close to that
--- fast quenching.  Need current limiting at 70 pri Amps to pump
15.5 kVA into the system.  Primary cap = 0.2 uF 50 kV pulse duty rated.

Dr. Resonance

----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Sunday, October 02, 2005 8:54 PM
Subject: Help with my First Coil


>Original poster: "Victor Yoo" <vlysvc@xxxxxxxxxx> > >To anybody that can HELP!! > >I have been a High Voltage nut for many, many years! And Finely I am >going to build my first coil! > >Here is what I have so far to build it with. > >1) One 10kva 14.4kv Pig >2) Four 1256 Powerstats, I am going to parallel >two for voltage control and parallel the other two and run them in >series with the output of the first stack for current control (will >this work)? I also have two paralleling chokes that came with the stack. >3) Three 0.04uf 100kv Maxwell Pulse Discharge caps. >4) Four 0.03uf 35kv Maxwell Pulse Discharge caps. >( I will probably sell these for cheep) >5) Five 92mf 535VAC Oil Filled Caps for PFC >6) Twenty 7.5piv 1.5a diodes for a DC bridge if I >go that route. >7) One Crompton Integra 2000 Power Measurement Display >8) Two Instrumentation High Precision 100A to 5A >current transformers. >9) One 1/3 hp Dayton Motor part #6K570A for a RSG >if it will work for it. >10) Four Emission Control LTD. HL30 EMI Filters rated >at 30A @ 600vac. >11) Misc. contactors High current SSR, Switches etc. >To complete the control. > >Can anybody supply me with the remaining components to finish my >toy? Any help on designing the rest of it including the pri. and >sec. or even supplying a completed sec. would be great. I hope to >get 12' to 15' thick arcs from this baby! I would be happy with 10' >to 12' arcs but the more the better!!! > >Thanks in advance! > >Victor > > > >