Tesla Coil

NOTES:
T-Pri	The primary side of this tesla coil is a flat pancake style. To find the proper micro henries the formula below was used.
	Center Axis oooooooooooooooooo [] oooooooooooooooooo
	[-------A-------] [-----------W---------]
	AA NN L = ----------------- N=Number of turns 8A + 11*W
	L = micro henries / A = 7.125" / W = 7.25" / N = 17.85
	Answer = 118.282 uH

T-Sec	The secondary side uses a 4" PVC core that has an outside dia- meter of 4.5". Wrapping wire around the tubing allowing the wire
	to sit side by side. To find the frequency of the coil I used the formula below.
	300,000 F = ---------------------------------- N * W * pi * ( .9144 / 36 ) * 4
	F = frequency in kHz / N = 1000 - 1200 / W = width of coil in "
	Answer = 208.86 kHz - 174.04 kHz

Design	A tesla coil tuner was used to find the frequency of the coil with the ball on top. The tuner read about 179 kHz.
	Now that we know about what frequency the coil is going to be running at, we can determine the capcitor size using this formula:
	1 Fr = --------------------- ________ 2 * pi \/ L * C

	Fr = 179 kHz / L = 118.282uH
	Answer = 6.67nF = C

	To find the impedence of the capacitor, this formula was used:
	1 Z = -------------------- 2 * pi * C * 60
	Answer = 397.68 Kohms

	Now, so I don't pull a lot of current I need a transformer with about the same impedence value. This formula gives me that info:
	E Z = ---- I
	E = 12 kV / I = 30 mA
	Answer = 400 Kohms

Here is the schmatic for the tesla coil described in the previous materials.
When properly assembled, you should expect arcs approximately 2.5' in length.

1.	SW	Power on/off switch
2.	VR	Variac 5A 120V
3.	F1	Fuse 5A Slo-Blo
4.	T1	Transformer 120V Pri / 12,000V Sec center tapped 30mA
5.	C1	Glass cap .01uF 20k Vdc
6.	C2	Glass cap .01uF 20k Vdc
7.	C3	Glass cap .01uF 20k Vdc
8.	SG	Spark Gap (9 total gaps)
9.	T-Pri*	Tesla Pri 1/4" copper refrigeration tubing
10.	T-Sec*	Tesla Sec 28awg magnet wire