[TCML] H/D Question

["H.S. J." <hsheltonj@xxxxxxxxx>]

On a smaller lower powered coil (4", 15kv, 30ma) is it necessary to keep that 1:4/1:5 H/D ratio?  I designed one thats had a H/D of 1:2.75.  Would I be running into any issues?

Plans are as follows:

Secondary Coil DesignDiameter of secondary coil : 101.60mm (4")
Winding height of secondary coil : 279.40mm (11")
Wire diameter for secondary coil : 0.6452mm (22AWG)
Spacing between windings : 0.00mm
Secondary turns : 433.00
Secondary wire length : 138.22m
Secondary inductance : 5.86mH
Approximate resonant frequency : 830.59kHz
Secondary quarter wavelength resonant frequency : 542.61kHz
Secondary self capacitance : 6.27pF
Toroid capacitance required to form quarter wavelength coil : 8.42pFPrimary Coil DesignPrimary capacitance : 0.0053uF
Primary resonant frequency : 542.61kHz
Secondary coil diameter : 101.60mm (4")
Primary conductor diameter : 3.26mm (8AWG)
Primary turn to turn spacing : 12.70mm (.5")
Spacing between the secondary and the inside turn of the primary : 50.80mm (2")
The primary will need to be tapped between turn 6 and turn 7 to form a resonant circuit at 542.61kHz
The approximate inductance at each turn is : 
Turn 1 0.49uH
Turn 2 1.77uH
Turn 3 3.75uH
Turn 4 6.45uH
Turn 5 9.88uH
Turn 6 14.10uH
Turn 7 19.17uH
Turn 8 25.13uH
Turn 9 32.06uH
Turn 10 40.00uH
Turn 11 49.02uH
Turn 12 59.18uH
Turn 13 70.55uH
Turn 14 83.19uH
Turn 15 97.15uHNeon Transformer / Primary Capacitor MatchingTransformer secondary voltage : 15.00kV
Transformer secondary current : 30.00mA
Number of transformers : 1
Primary capacitor required to form a resonant circuit at 60Hz with neon transformer(s) : 0.0053uF
 
--
Thanks,
***********************************************
Shelton Jacinto
Email: hsheltonj@xxxxxxxxx
***********************************************




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