Daniel McCauley's Mini Coil:
Note - Photo does not show latest top load configuration.
Franceformer Model 4020SE 4kV/20mA
NST secondary short circuit current - 38mA
NST secondary voltage - 4kV
0.0122uF MMC capacitor
Primary (12 AWG solid wire)
Secondary 2" PVC coil form (2.375" O.D.)
30AWG, Winding Length 12", H/D Aspect Ratio 5.05
1.625" x 6" Aluminum Spun Toroid - 6.66pF
Has passed 5 minute conditioning run.
Longest recorded discharge is 9.00 inches
Future plans include increasing size of toroid and size of capacitor toincrease streamer length.
Website Link: http://www.spacecatlighting.com/teslacoil4.htm
Update March 16, 2003
Increased tank capacitor to 0.0244 uF, changed top load to a foil-covered skid cushion (same as Gary Lau's), approx. 3" high by 6" diameter. Re-tapped primary coil at 7 turns.
Maximum spark length is now 12".