Re: Magnifier conversion

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

Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>

Hi All,

I have decided to go with the 2,3,4 mode of operation with the following 
values.

C1  23.8nF
L1  41.859uH
C2  163.85pF
L2  6.04mH
C3  35.4pF
L3  22.1mH
k12  4.634

http://hot-streamer-dot-com/temp/NewMag/0414-01.gif

The primary L1 will be 8.67 turns of 1/4 inch tubing with 1/2 inch pitch on 
a 16 inch circle.  That gives a length of 4.34 inches at 41.71uH.  It will 
be a 1/4 inch tubing spiral on a 1/2 inch Lexan framework.

The secondary L2 will be 171 turns, 12 inches dia., of #20 stranded hookup 
wire.  The diameter of this plastic coated wire is 1.79mm so it will be 
12.04 inches long for an inductance of 6.05mH.  This can be easily spliced 
and such incase adjustments are needed.

C2 will be 75 10nF 1600V poly caps in series for 133.3pF.  The secondary 
coil should have a self capacitance of 13.66pF and the connecting wire 
should have a capacitance of 16.1 pF for a total of 163pF.  I think I can 
make this capacitor easily taped for adjustment.

Since the peak voltage on the secondary is only about 78kV,  The high 0.463 
coupling should not be too hard to do.  The larger C2 value really helps 
helps keep the voltage reasonable here.

n1= 8.67; h1= 0.11; r11= 0.20; r12= 0.20; b1= 0.00; d1=0.0064
Wheeler primary inductance L1: 0.0417485765 mH
Lundin primary inductance L1: 0.0425074967 mH
Lorenz primary inductance L1: 0.0425075042 mH
Turns rounded to 9
Snow primary inductance L1: 0.0454199784 mH
Turns rounded to 9
Kirchhoff primary inductance L1: 0.0454388435 mH
Calculating Maxwell inductance of a general coil...
G. m. d.: 0.002472692486252; Vertical spacing: 0.002472815946653
Segments: high precision: 516 used: 2000
Maxwell primary inductance: L1: 0.0424043513 mH <- used
n2=171.00; h2= 0.32; r21= 0.15; r22= 0.15; b2= 0.00; d2=0.0008
Wheeler secondary inductance L2: 5.9228479584 mH
Lundin secondary inductance L2: 5.9135887092 mH
Lorenz secondary inductance L2: 5.9135939030 mH
Snow secondary inductance L2: 5.9114100253 mH
Kirchhoff secondary inductance L2: 5.9113847051 mH
Calculating Maxwell inductance of a solenoid...
G. m. d.: 0.000316115237849; Vertical spacing: 0.000316115824725
Segments: high precision: 3029 used: 2000
Maxwell secondary inductance: L2: 5.9136191966 mH <- used
Segments per turn: L1=20; L2=20
Calculating mutual inductance between solenoids...
Mutual Inductance M: 0.23999370368957 mH
Coupling coefficient k: 0.47925644121120
Mode: 1.5: 2.5

The voltage:

http://hot-streamer-dot-com/temp/NewMag/0414-02.gif

and stress:

http://hot-streamer-dot-com/temp/NewMag/0414-03.gif

on the primary/secondary is not too bad at all.  Simple corona rings or 
some poly sheeting should fix any arcing.  So It all looks like it will 
work fine.  I ordered up a bunch of stuff today so it should be going 
pretty quick.

Happily, we now have to software tools to pretty much answer all the 
questions before the thing is built!!

Cheers,

	Terry