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[TCML] poor coil performance again- help!
Hello,
I rewired my small coil to get this:
http://lh3.ggpht.com/Thomas.Ryckmans/SAuuyEC3o6I/AAAAAAAAAXw/4l1Z3jR_wm8/s14
4/Tom_rewired_coil.JPG
(I am adding the JavaTC file below)
My NST is 6kV 50 mA
Primary is 8mm copper tubing, spacing (centre to centre) is 1.8 cm; inside
diameter is 11 cm, outside diameter is 30 cm, 5 turns (I am tapping at 2 or
2.5 or 3 or 3.5 turns) as per scope and calculation). I modified the spark
gap spacing, the spacing of the Terry Filter?
I am using a salt water bottles cap at 11.6 nF
Secondary is 3.2 uH with Diameter=70 mm, 480 turns, 15 turns/cm, 32 cm
height (AWG 22)
Top load is a cylinder 13 cm diameter, 18 cm high, 1 cm above end of
secondary
Secondary and Primary start at the same level ? JavaTC gives me a k=0.129
I have added a stationary spark gap
http://lh4.ggpht.com/Thomas.Ryckmans/SAuuyUC3o-I/AAAAAAAAAYQ/h8QQxf8Wvzo/Tom
_Spark_gap_on_PPE.JPG?imgmax=512
and a Terry filter (with adjustable number of MOVs ? I hope to get a bigger
NST one day!)
http://lh4.ggpht.com/Thomas.Ryckmans/SAuuyUC3o8I/AAAAAAAAAYA/ESiTnSNkQTg/Tom
_Adjustable_Terry_filter.JPG?imgmax=512
http://lh4.ggpht.com/Thomas.Ryckmans/SAuuyUC3o9I/AAAAAAAAAYI/JXld0yjBiC4/Tom
_Adjustable_Terry_filter2.JPG?imgmax=512
I am using a counterpoise (aluminium foil about 8 cm below the
primary/secondary; radius about 60 cm or 2x height of coil). I have no RF
ground in this apartment!
but still get pathetic sparks! About 5 cm tops from top load to a
screwdriver I am holding above it.
On the other hand? I get massive corona on my saltwater bottles ? it is much
more spectacular than the coil! Here is a picture of my saltwater cap (off
power)
http://lh3.ggpht.com/Thomas.Ryckmans/SAuuyEC3o7I/AAAAAAAAAX4/gCKeTU3n5ek/Tom
_saltwater_cap.JPG?imgmax=512
Quite ugly but I?d like to see the coil working before I invest in a MMC.
Could anyone help me nailing the issues with this coil?
Many thanks!
Thomas
J A V A T C version 11.7 - CONSOLIDATED OUTPUT
20 April 2008 22:44:40
Units = Centimeters
Ambient Temp = 20°C
----------------------------------------------------
Surrounding Inputs:
----------------------------------------------------
300 = Ground Plane Radius
300 = Wall Radius
300 = Ceiling Height
----------------------------------------------------
Secondary Coil Inputs:
----------------------------------------------------
Current Profile = G.PROFILE_LOADED
3.5 = Radius 1
3.5 = Radius 2
0 = Height 1
32 = Height 2
480 = Turns
22 = Wire Awg
----------------------------------------------------
Primary Coil Inputs:
----------------------------------------------------
5.5 = Radius 1
15 = Radius 2
0 = Height 1
0 = Height 2
5 = Turns
0.8 = Wire Diameter
0.0116 = Primary Cap (uF)
50 = Total Lead Length
0.3 = Lead Diameter
----------------------------------------------------
Top Load Inputs:
----------------------------------------------------
Cylinder #1: diam=13, bottom_h=33, top_h=51, topload
----------------------------------------------------
Secondary Outputs:
----------------------------------------------------
830.58 kHz = Secondary Resonant Frequency
90 deg° = Angle of Secondary
32 cm = Length of Winding
15 cm = Turns Per Unit
0.02287 mm = Space Between Turns (edge to edge)
105.56 m = Length of Wire
4.57:1 = H/D Aspect Ratio
5.545 Ohms = DC Resistance
15344 Ohms = Reactance at Resonance
0.305 kg = Weight of Wire
2.94 mH = Les-Effective Series Inductance
2.734 mH = Lee-Equivalent Energy Inductance
3.166 mH = Ldc-Low Frequency Inductance
12.488 pF = Ces-Effective Shunt Capacitance
11.405 pF = Cee-Equivalent Energy Capacitance
25.768 pF = Cdc-Low Frequency Capacitance
0.0784 mm = Skin Depth
8.506 pF = Topload Effective Capacitance
48.8876 Ohms = Effective AC Resistance
314 = Q
----------------------------------------------------
Primary Outputs:
----------------------------------------------------
601.84 kHz = Primary Resonant Frequency
27.54 % high = Percent Detuned
0 deg° = Angle of Primary
322.01 cm = Length of Wire
1.1 mOhms = DC Resistance
1.1 cm = Average spacing between turns (edge to edge)
1.568 cm = Proximity between coils
0 cm = Recommended minimum proximity between coils
5.453 µH = Ldc-Low Frequency Inductance
0.00609 µF = Cap size needed with Primary L (reference)
0.576 µH = Lead Length Inductance
16.981 µH = Lm-Mutual Inductance
0.129 k = Coupling Coefficient
0.125 k = Recommended Coupling Coefficient
7.75 = Number of half cycles for energy transfer at K
6.37 µs = Time for total energy transfer (ideal quench time)
----------------------------------------------------
Transformer Inputs:
----------------------------------------------------
0 [volts] = Transformer Rated Input Voltage
0 [volts] = Transformer Rated Output Voltage
0 [mA] = Transformer Rated Output Current
0 [Hz] = Mains Frequency
0 [volts] = Transformer Applied Voltage
0 [amps] = Transformer Ballast Current
0 [ohms] = Measured Primary Resistance
0 [ohms] = Measured Secondary Resistance
----------------------------------------------------
Transformer Outputs:
----------------------------------------------------
0 [volt*amps] = Rated Transformer VA
0 [ohms] = Transformer Impedence
0 [rms volts] = Effective Output Voltage
0 [rms amps] = Effective Transformer Primary Current
0 [rms amps] = Effective Transformer Secondary Current
0 [volt*amps] = Effective Input VA
0 [uF] = Resonant Cap Size
0 [uF] = Static gap LTR Cap Size
0 [uF] = SRSG LTR Cap Size
0 [uF] = Power Factor Cap Size
0 [peak volts] = Voltage Across Cap
0 [peak volts] = Recommended Cap Voltage Rating
0 [joules] = Primary Cap Energy
0 [peak amps] = Primary Instantaneous Current
0 [cm] = Spark Length (JF equation using Resonance Research Corp. factors)
0 [amps] = Sec Base Current
----------------------------------------------------
Rotary Spark Gap Inputs:
----------------------------------------------------
0 = Number of Stationary Gaps
0 = Number of Rotating Electrodes
0 [rpm] = Disc RPM
0 = Rotating Electrode Diameter
0 = Stationary Electrode Diameter
0 = Rotating Path Diameter
----------------------------------------------------
Rotary Spark Gap Outputs:
----------------------------------------------------
0 = Presentations Per Revolution
0 [BPS] = Breaks Per Second
0 [kmh] = Rotational Speed
0 [ms] = RSG Firing Rate
0 [ms] = Time for Capacitor to Fully Charge
0 = Time Constant at Gap Conduction
0 [µs] = Electrode Mechanical Dwell Time
0 [%] = Percent Cp Charged When Gap Fires
0 [peak volts] = Effective Cap Voltage
0 [joules] = Effective Cap Energy
0 [rms volts] = Terminal Voltage
0 [power] = Energy Across Gap
0 [cm] = RSG Spark Length (using energy equation)
----------------------------------------------------
Static Spark Gap Inputs:
----------------------------------------------------
0 = Number of Electrodes
0 [cm] = Electrode Diameter
0 [cm] = Total Gap Spacing
----------------------------------------------------
Static Spark Gap Outputs:
----------------------------------------------------
0 [cm] = Gap Spacing Between Each Electrode
0 [peak volts] = Charging Voltage
0 [peak volts] = Arc Voltage
0 [volts] = Voltage Gradient at Electrode
0 [volts/cm] = Arc Voltage per unit
0 [%] = Percent Cp Charged When Gap Fires
0 [ms] = Time To Arc Voltage
0 [BPS] = Breaks Per Second
0 [joules] = Effective Cap Energy
0 [rms volts] = Terminal Voltage
0 [power] = Energy Across Gap
0 [cm] = Static Gap Spark Length (using energy equation)
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