Kapanadze Cousin - DALLY FREE ENERGY

[itsu]

Jeg,

to my knowledge, if your secondary coil is grounded (minus) at the bottom connection and the primary is around to bottom of this secondary,
it will force the Kacher to run in ¼ wavelength resonance with zero voltage at the bottom and max voltage at the top.

The selfresonance frequency will be around the 1mhz with your wire length.
Adding a topload (sphere, toroid) will decrease this resonance frequency, but should also stop the streamers (thus the losses) and decrease the current.
So not sure why your top cap increases current / streamers.

A good info page for a solid state tesla coil (SSTC) is here: 
http://www.loneoceans.com/labs/sstc2/

It contains a java calculator for calculating you secondary (and primary) coil etc.:
http://www.classictesla.com/java/javatc/javatc.html


When i plug in your data from your secondary coil (148m wire of 0,4mm on a 5cm diameter pvc tube. Total 945 turns. Coil length 37,8cm. Without antenna vibrates close to 1MHz)

I get the output as seen below.


Regards Itsu

[Jeg]

Jeg if I have a coil that vibrates at 1Mhz a frequency of 1/4 wave is the 4th harmonic thats 4 times faster not slower, slower is a 1/4 of the frequency not the wave.

Allen

Hi Allien
I spoke about 1/4 in terms of wavelength and not of a frequency. About 592m of wire corresponds to 500KHz. For a Tesla coil to vibrate at this frequency needs to be the 1/4 of length like mine at 148m.

[Jeg]

Itsu
Thanks for the data and this very useful link!

148m corresponds to 2MHz. Katcher finds resonance at about the half, close to 1MHz. This is not 1/4. Something I don't get.

I will say it differently. I have a Tesla coil which is 148m. What is the right frequency to vibrate it so to get maximum voltage at its top side?

[itsu]

Jeg,

148m corresponds to 2MHz, correct, however thats for a stretch of wire only.
When you coil up that stretch of wire, then the resonance frequency changes (lowers) due to interwinding capacitance and added inductance etc.

So your 148m of wire, coiled up in 945 turns over 38cm space on a 5cm diameter tube with the bottom end grounded will start resonating  around 1Mhz.


Itsu

[AlienGrey]

Itsu
Thanks for the data and this very useful link!

148m corresponds to 2MHz. Katcher finds resonance at about the half, close to 1MHz. This is not 1/4. Something I don't get.

I will say it differently. I have a Tesla coil which is 148m. What is the right frequency to vibrate it so to get maximum voltage at its top side?

148 m = 2025.624Khz just off 2 mhz approx  it depends on 'C' in the winding, to find the resonant frequency you want you will have to add
wingdings or remove them. have you got a scope and Signal generator. you could use DOG's trick wind fishing line as a spacer between winds to lower 'c', it's never spot on.

http://www.procato.com/calculator-wavelength-frequency/