[TCML] First tesla coil, some advice needed

["Andreas Holmqvist" <andreasho@xxxxxxxxx>]

Hello,


Years since i last was here, my coil never got finished but now i want to 
complete it !

My tesla coil is almost finished, only the terryfilter and making the wire 
connections are on the to-do-list.
This is a SGTC with a static tungsten gap with two 30w fans running air true 
it.

I need some advice on how much capacitance to use. I only got two options. 
30nF or 60nF and i cant make my mind up on what to use.
Orginally i was going to use a motstack but the parts got thrown away by 
accident after sitting years in the garage so now i have to use an nst and 
the caps dont match up as good with it.
Will use somthing with more power later, i am building it to handle up to 
1,5kva but i want to get it going first.

30nF is close to resonant and 60nF is too much ? Can i use 30nF without 
blowing things up if i use terryfilter and safetygaps ?
The system is wired up with both caps in the calculation below. Will this 
couse problems ?


Here is the coil specs.

Generated by TeslaMap
www.teslamap.com

----- NST Parameters -----
NST Input Voltage: 230 V
NST Input Frequency: 50 Hz
NST Output Voltage: 7,5 kV
NST Output Current: 60 mA
NST Watts: 463 W
NST PFC Capacitance: 27,1 uF

----- MMC Parameters -----
Primary Capacitance: 60 nF
MMC Capacitor Value (individual cap): 0.03 uF
MMC Capacitor Voltage (individual cap): 35 kV
Resonant Cap: 25,5nF
Optimum LTR (static gap) Cap: 41,2nF

----- Primary Coil Parameters -----
Primary Coil Wire Diameter: 0,8 cm
Primary Coil Wire Spacing: 0,8 cm
Primary Coil Center Hole Diameter: 16 cm
Primary Coil Incline Angle: 0 degrees
Required Primary Inductance: 8 uH
Primary Coil Tap Turn: 5 - 6
Primary Coil Diameter At Tap Turn: 35,2 cm
Primary Coil Height At Tap Turn: 0,8 cm
Primary Coil Wire Length At Tap Turn: 5,1 m

----- Secondary Coil Parameters -----
Secondary Coil Magnet Wire AWG: 24,8
Single Build Insulation
Secondary Coil Magnet Wire Diameter: 0,501 mm
Secondary Wire Length: 297 m
Secondary Wire Weight: 450,45 g
Secondary Coil Winding Height: 51 cm
Secondary Coil Form Diameter: 10 cm
Secondary Coil Turns: 947
Secondary Coil Height To Width Ratio: 5,1:1

----- Top Load Parameters -----
Toriod Ring Diameter 1: 10 cm
Toriod Total Diameter 1: 33 cm
Toriod Ring Diameter 2: 4,5 cm
Toriod Total Diameter 2: 15 cm
Top Load Sphere Diameter: 0 cm
Toroid 1 Capacitance: 14,6 pF
Toroid 2 Capacitance: 7,7 pF
Top Load Sphere Capacitance:
Total Top Load Capacitance: 22,3 pF
Optimum Top Load Capacitance: 17,3pF

----- Tesla Coil Parameters -----
Resonate Frequency: 230 kHz

End of report

/Andreas 

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