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For lambda 6 m long wire with 2 mm diameter / with insulation removed/
So the natural frequency of the 6 m wire is 50 MHz
Then for ¼ lambda 1.5 m long wire with 4 mm diameter
This will go on 50 mm former plastic pipe so 2*r*3.14159 = 50*3.14159 = 137 mm *5 turns = 0.785 m so there is left 0.715 m for connections
So the primary is made from 4 mm diameter wire on 50 mm former plastic pipe with 1.5 m long wire and with 5 turns
The secondary: first we cut it on two pieces of 3 m long wire
This will go on 70 mm former plastic pipe so 2*r*3.14159 = 70*3.14159 = 220 mm * 13 turns = 2.86 m and 0.14 m left for connections
So secondary is made from 2 mm diameter wire on 70 mm former plastic pipe with 2*3 m long wire with 13 turns of each 3 m long wire
The primary with this parameters will have a coil diameter of 54 mm and the coil height will be 35 mm /the turn space is 2 mm/
The induction calculator with these parameter gives the results for:
L= 1.38 uH and Cs= 2.7 pF from this the frequency is 82.45 MHz
The secondary with these parameters will have a coil diameter of 72 mm and the coil height will be 104 mm /the turn space is 6 mm/
The coil induction calculator with these parameters gives the results for:
L= 6.32 uH and Cs= 3.3 pF and from this the frequency is 34.85 MHz
Primary = 82.45 MHz with 2.7 pF
Secondary = 34.85 MHz with 3.3 pF
So to achieve the 34.85 MHz frequency resonance in primary we should add additional capacitors to the circuit, from the calculator it gives a 15.11 pF value that is to say additional 12.41 pF and then the frequency will be 34.85 MHz
If the output voltage of the HV module is 2500V then each turn on primary will have of 500V 2500V/5 turns and therefore the secondary with 26 turns will have 13000V
13000V too high
Additional note
If you start to wind a coil in CW mode then if you turn it 180 degree it will still be a CW winding you cannot change the winding direction buy rotating it!
http://www.energeticforum.com/attach...1&d=1339272316
take care about that
Zilano what do you think are these equations right! Or should I change something? Although 13000V for me is too high.
rgds blackrobi
For lambda 6 m long wire with 2 mm diameter / with insulation removed/
So the natural frequency of the 6 m wire is 50 MHz
Then for ¼ lambda 1.5 m long wire with 4 mm diameter
This will go on 50 mm former plastic pipe so 2*r*3.14159 = 50*3.14159 = 137 mm *5 turns = 0.785 m so there is left 0.715 m for connections
So the primary is made from 4 mm diameter wire on 50 mm former plastic pipe with 1.5 m long wire and with 5 turns
The secondary: first we cut it on two pieces of 3 m long wire
This will go on 70 mm former plastic pipe so 2*r*3.14159 = 70*3.14159 = 220 mm * 13 turns = 2.86 m and 0.14 m left for connections
So secondary is made from 2 mm diameter wire on 70 mm former plastic pipe with 2*3 m long wire with 13 turns of each 3 m long wire
The primary with this parameters will have a coil diameter of 54 mm and the coil height will be 35 mm /the turn space is 2 mm/
The induction calculator with these parameter gives the results for:
L= 1.38 uH and Cs= 2.7 pF from this the frequency is 82.45 MHz
The secondary with these parameters will have a coil diameter of 72 mm and the coil height will be 104 mm /the turn space is 6 mm/
The coil induction calculator with these parameters gives the results for:
L= 6.32 uH and Cs= 3.3 pF and from this the frequency is 34.85 MHz
Primary = 82.45 MHz with 2.7 pF
Secondary = 34.85 MHz with 3.3 pF
So to achieve the 34.85 MHz frequency resonance in primary we should add additional capacitors to the circuit, from the calculator it gives a 15.11 pF value that is to say additional 12.41 pF and then the frequency will be 34.85 MHz
If the output voltage of the HV module is 2500V then each turn on primary will have of 500V 2500V/5 turns and therefore the secondary with 26 turns will have 13000V
13000V too high
Additional note
If you start to wind a coil in CW mode then if you turn it 180 degree it will still be a CW winding you cannot change the winding direction buy rotating it!
http://www.energeticforum.com/attach...1&d=1339272316
take care about that
Zilano what do you think are these equations right! Or should I change something? Although 13000V for me is too high.
rgds blackrobi
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