Pasqua con bobina di tesla - Easter with Spark Gap Tesla Coil

[ArmaHighVoltage]

@hbenders3356 You're right, man! :)

[Teslalabor]

You should use 200BPS - this sounds MUCH BETTER ,)

[goldsphere]

How did you calculate the topload required for the quarter wave? I presume you mean for the length of wire used in the secondary as Tesla himself spoke of?

[ArmaHighVoltage]

@goldsphere He has found it with the oscilloscope (34,4kHz). Anyway yes, it's based on the cable length.

And... here the teslacoil is underpowered.

[ArmaHighVoltage]

@goldsphere sorry, the quarter wave is 84,4kHz

[goldsphere]

The inductance and capacitance (self capacitance plus top load) of the secondary make the quarter wave frequency. The primary tank circuit must be tuned to this to get the maximum spark length. (Technically it is tuned about 10% lower as the spark break out lowers the frequency of the secondary). If you lower the secondary frequency by adding a larger topload, you will have to adjust the primary to suit. This is what I am saying. Perhaps you could add your coil to the projects thread at 4HV.

[ArmaHighVoltage]

@goldsphere But now the topload isn't tuned for the quarter wave :)

[goldsphere]

I understand that, it would need to be retuned with either a more primary turns or larger cap bank, but a larger toroid on this coil would greatly improve the performance. Especially when you have 7kW to dump across the gap.

[ArmaHighVoltage]

@goldsphere The quarter wave is calculated considering ONLY parameters of the Secondary Coil. The primary circuit doesn't matter for calculating it.

[goldsphere]

Nice work there. You'll be able to get a bigger output if you put a bigger toroid right on top of the one you have. The field will also be directed away from the primary.

Good work.

[ArmaHighVoltage]

@goldsphere Thanks, but the toroid is tuned for the quarter wave.

[digeta]

bravi ragazzuoli!!!

[ArmaHighVoltage]

@digeta Grazie caro!

[ferro88and]

Uella.......proprio un tesla potente e mooooolto sano :)).....

le scintille sono veramente belle,,,,ramificate e pompe di corrente.......vorrei sapere una cosa se possibile....a che frequenza (la fondamentale) lavora la bobina??????

Ciao....e bravi a tutti ; -]

[ArmaHighVoltage]

@ferro88and aspettiamo il roberrrrrrto

[ArmaHighVoltage]

@ferro88and Ok, il bob me lo ha adetto andriew! Risuona a 84,6kHz (1/4 d'onda)

[ciaocross]

Oh Luca ho deciso che i capodanni i natali le pasque gli anniversari li passo con te!

[multivoltage]

si, ma si può ben notare il casino che fa, tutti i cani cominciano ad abbaiare

[baretta52]

Madonnaaaaaa..................­........... che bestione ma Arma complimenti ma che diavolo di potenza ha.

[ArmaHighVoltage]

@baretta52 Grazie, fatto tutto da me eh! Poi quel pezzente di roberto ha fatto solo quella strana lampadina violacea

:D