Here are some of my past and currant tesla coils. The coils towards the top of the page are the earliest and the latest developments are towards the bottom.
Frist some basics to get you going....these were helpful to me
The equation for this is:
(1 over (6.2831 x Sec frequency in herts)) squared
for 400Khz = (1/(6.2831 x 400000)) = 1.5831E-13 over L or C
with the result, which might be very small. (recomed to use a scientific calculator) Divide the result by whatever you have. The figures must be quoted in L or C so farads or henries.
I used a calcultor with an engineering function so the figures could be entered in milli or pico and the sum would be correct. the end result gives you the needed C or L. It gives L if you enter known C.etc and vis vesa. L for C and C for L.
I have canibalised the MK1 to make way for MK2. waaaa....
MK2 is a little device compaired with MK1, only standing 30cm tall! but depite its small size and feeble looks MK2 is quite a deadly beast with 7" arcs!!
this one resonates at about produces about 5.5 inch sparks peaking to 6.5 inches. this is acompanied by a bright glow of corona dishcage :) you can see remains of MK1 in the photo. there is a corona dome on the upper most part of the coil. still 2000v in.
