Extra Coil Calculator
This utility is to help determine the requirements for winding a Tesla Extra coil (or secondary, or any other coil)
Simple Extra Coil Designer
Extra Coil Winding Specs
| Wire Length |
2373.46 feet |
723.43 meters |
| H/D Ratio |
1 |
|
| Coil Width |
5.756 inches |
146.2 millimeters |
| Coil Height |
5.756 inches |
146.2 millimeters |
| Wire Spacing |
0.004 inches |
0.09 millimeters |
| Ideal Wire Spacing |
0.165 inches |
4.20 millimeters |
| # Turns |
1575.02 |
turns |
Coil Electrical Characteristics
| Wire Resistance |
2.30683 |
ohms |
| Inductance (Wheeler Approx) |
246186 |
uH |
| Inductance Per Turn (Wheeler Approx) |
156.307 |
uH |
| Inductance Per Meter (Wheeler Approx) |
0.0003403037723333011 |
uH |
| Capacitance (Derived from L and Frequency) |
6.58503 |
picoFarads |
| Capacitance per-meter |
0.00910252 |
picoFarads |
| Conductance per-meter |
2.1447302307971923E-12 |
mho |
| Conductance Total |
1.5515602391611028E-09 |
mho |
| Inductive Reactance |
193353.75606312515 |
Ohms |
| Capacitive Reactance |
193353.75606312515 |
Ohms |
| Omega (rads/sec) |
785398.1633974483 |
rads/sec |
Metrical Dimensions
| Wire Diameter_Meters |
0.00259 |
meters |
| Wire Diameter_MM |
2.59 |
mm |
| Wire Diameter_AWG |
10 |
AWG |
| Wire Cross-sectional area |
0.0005268529419886422 |
cm^2 |
Quality / Loss Tangent Characteristics(experimental)
| Series Q (resistive) |
83817.89939133904 |
|
| Parallel Q (conductive) |
3333.3333333333335 |
|
| AC/RF Resistance |
7.991381379677008 |
ohms |
| Loss Tangent due to Conduction |
4.133036534893081E-05 |
numeric |
| Loss Tangent due to Proximity Effect |
2.939973946517917E-05 |
numeric |
| Loss Tangent due to Skin Effect |
0.022051711230701158 |
numeric |
| Loss Tangent due to Radiation(basic) |
3.4099953216783552E-12 |
numeric |
| Loss Tangent due to Radiation(advanced) |
6.607060685094362E-05 |
numeric |
| Total Non-Dielectric Loss Tangents(basic) |
7.07301082241053E-05 |
numeric |
| Total Non-Dielectric Loss Tangents(advanced) |
0.00013680071166505362 |
numeric |
| Radiation Resistance(basic) |
6.593354036041947E-07 |
ohms |
| Radiation Resistance(advanced) |
12.774999999999999 |
ohms |
Build tips:
* Thicker wire = better. 20awg or lower is good, 14awg or lower is best.
* Height-width ratio should be somewhere around 0.75 to 1.25 to 1.
* Ideal wire spacing center-to-center is ~162% the wire diameter.