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Re: TC Inductance Formulas...
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To: tesla-at-grendel.objinc-dot-com
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Subject: Re: TC Inductance Formulas...
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From: Tim Chandler <tchand-at-slip-dot-net>
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Date: Wed, 21 Feb 1996 17:50:28 -0500
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>Received: from slip-dot-net (slip-3.slip-dot-net [204.160.88.17]) by uucp-1.csn-dot-net (8.6.12/8.6.12) with SMTP id QAA08786 for <tesla-at-grendel.objinc-dot-com>; Wed, 21 Feb 1996 16:26:56 -0700
At 08:33 AM 2/21/96 +0700, you wrote:
<snip>
>Tim:
> What are the vital statistics for the coil whose inductance
>you are calculating?
>Ed Phillips
>
You asked for it Ed,
=========================
Tesla Coil Calculations A TC_6A.ASC
=========================
---------------------------------------------------------------
Tesla Coil Physical Specifications
---------------------------------------------------------------
---------------------------------------------------------------
Coil Form Specifications
---------------------------------------------------------------
Coil Form Polymer Type : Thermoplastic
Coil Form Polymer Material : Clear Cast Acrylic
Chemical Polymer Material : polymethyl-methacrylate
Coil Form Outer Diameter : 6in
Coil Form Inner Diameter : 5.875in
Coil Form Thickness : 0.125in
-------------------------------------------------------------
Mechanical Properties
-------------------------------------------------------------
Tensile Strength, lb/in^2 : 11000
Tensile Modulus, lb/in^2 * 10^-5 : 4.5
Elongation, % : 10%
Compressive Strength, lb/in^2 : 18000
Flexural Strength, lb/in^2 : 17000
Impact Strength, ft*lb/m of notch : 0.5
Hardness, Rockwell : M105
Izod Impact Strength, notch 1/8in. sample : 0.4
Deformation under load (2000psi,122F), % : 0.3%
-------------------------------------------------------------
Electrical Properties
-------------------------------------------------------------
Dielectric Strength (step-by-step), V/mil : 350 V/mil
Dielectric Constant (60Hz) : 4.0
Dielectric Constant (1MHz) : 3.5
Dielectric Constant (1GHz) : 3.2
Dissipation Factor (60Hz) : 0.04
Dissipation Factor (1MHz) : 0.03
Dissipation Factor (1GHz) : 0.02
Volume Resistivity (ohms*cm) : 10^14
Arc Resistance (SS Electrode), sec. : *NT
-------------------------------------------------------------
Thermal Properties
-------------------------------------------------------------
Heat Distortion Temp at 264 lb/in^2 : 210F
: 98.889C
: 372.03889K
Deflection Temperature (F at 66psi fiber stress) : 185F
: 85C
: 358.15K
Max. Recommended Service Temp. (intermittent use) : 190F
: 87.778C
: 360.92778K
Max. Recommended Service Temp. (Continuous use) : 145F
: 62.778C
: 335.92778K
Coeff. of Linear Thermal Expansion, K^-1 * 10^5 : 9
Thermal Conductivity, cal/(cm^2*s*C*cm*10^-4) : 1.4
Flammability, in/min : 1.2
------------------------------------------------------------
Chemical Properties
------------------------------------------------------------
Underwriters' Lab Rating (Subj. 94) : HB
Specific Gravity : 1.18
Water Absorbtion, % in 24h : 0.4
Not Resistant to : aromatic solvents
: ketones
: esters
: chlorinated solvents
* NT = No Tracking
-------------------------------------------------------------------
Wire Specifications
-------------------------------------------------------------------
Magnet Wire Type : Heavy Armored Poly-Thermaleze
Magnet Wire Manufacturer : Belden
Magnet Wire Gauge : 22 AWG
# of Insulating Coats : 2
Insulating Coat #1 Type : Cross-Linked Modified Polyester
Insulating Coat #2 Type : Amide-Imide Polymer
Insulating Coat #1 Thickness : 0.8167 mils (8.167e-4 in)
Insulating Coat #2 Thickness : 0.4083 mils (4.083e-4 in)
Total Insulating Thickness : 1.2250 mils (1.225e-3 in)
Conductor Material Type : Solid Rod Copper
Conductor Material Diameter : 0.02535 in
Magnet Wire Diameter d[w]: 0.02780 in
Turns Per Inch TPI: 36.0 TPI (approx.)
Turns Per Inch TPI: 35.971223022 (exact)
-------------------------------------------------------------------
Physical Coil Parameters
-------------------------------------------------------------------
Coil Form Diameter d: 6in
: 15.24cm
: 0.1524m
Mean Coil Winding Diameter d[m]: 6.0278in
: 15.310612cm
: 0.15310612m
Prime Coil Winding Diameter d[p]: 6.00245in
: 15.246223cm
: 0.15246223m
Coil Form Radius r: 3in
: 7.62cm
: 0.0762m
Mean Coil Winding Radius r[m]: 3.0139in
: 7.655306cm
: 0.07655306m
Prime Coil Winding Radius r[p]: 3.001225in
: 7.6231115cm
: 0.076231115m
Length of Coil Winding h: 25in
: 63.5cm
: 0.635m
Cross-Sectional Area A: 28.2743338823in^2
of Coil Form : 182.414692475cm^2
: 0.018241469248m^2
Mean Cross-Sectional Area A[m]: 28.5369496967in^2
of Coil Winding/Form : 184.108984663cm^2
: 0.0184108984663m^2
Prime Cross-Sectional Area A[p]: 28.2974293027in^2
of Coil Winding/Form : 182.563694889cm^2
: 0.0182563694889m^2
Length of Wire l: 16951.0394978in
in Coil Winding : 1412.58662482ft
: 43055.6403244cm
: 430.556403244m
Mean Length of Wire l[m]: 17029.5793141in
in Coil Winding : 1419.13160951ft
: 43255.1314579cm
: 432.551314579m
Prime Length of Wire l[p]: 16957.9611723in
in Coil Winding : 1413.16343102ft
: 43073.2213775cm
: 430.732213775m
# of turns in Winding N: 899.28057554 turns
Aspect Ratio (h:d) h/d: 4.16666666667:1
Mean Aspect Ratio (h:d[m]) h/d[m]: 4.14745014765:1
Prime Aspect Ratio (h:d[p]) h/d[p]: 4.16496597223:1
NOTE: r, d, A, and l are all based on nominal approximate
measurements.
r[m], d[m], A[m], and l[m] are the mean radius, mean
diameter, mean cross-sectional area, and mean wire length
respectivily, taken from the center of the coil form to
the center of the wire in the winding.
r[p], d[p], A[p], and l[p] are the prime radius, prime
diameter, prime cross-sectional area, and prime wire
length respectivily, taken from the center of the coil
form to the inner side of the conductor in the wire
(accounts for the insulation around the conducting wire).
Sorry so long, but it was all in one file, did not feel like reading through
and editing non-vital specifications...Sorry.
Tim
o------------------------------------oo---------------------------------o
| Timothy A. Chandler || M.S.Physics/B.S.Chemistry |
o------------------------------------oo---------------------------------o
| NASA-Langley Research Center || George Mason University |
| Department of Energy || Department of Physics |
| FRT/Alpha - NASALaRC/DOE JRD/OPM || Department of Chemistry |
| CHOCT FR Designation #82749156/MG09|| OPC-EFC |
o------------------------------------oo---------------------------------o
| Private Email Address: tchand-at-slip-dot-net |
o-----------------------------------------------------------------------o