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Ok, I can elaborate further when I am at my home PC.
Generally I work with one element at a time. I have found that the better results are achieved with lower values of capacitance. 0.1uF and below. Oil filled, ceramic, mika, (I am currently working with vacuum types). When using the car audio amplifier I found that large values of inductances are better. When the resonance is achieved the resistance of the network goes way down (it's like the resistances of the coils are all in parallel and resistance goes way down). This results in frying my amp transistors. Adding resistance to the coils is wasting energy i feel.
So I work with one element at a time and I can achieve about 2000volts with one element (Ferrite core inductors and oil filled glass capacitors - I forget the values right now) and have managed to light up 4 full size fluro tubes with the one wire. 8 fluro tubes with the two wires connected - then I blew my amp again.
I have been re-thinking this one and I have shifted my thoughts to a higher voltage powersupply (rather than a car audio amp) similar to a regular tesla spark gap primary. This will drive a circuit in an almost a dead short or low resistance condition. Then the optimum components values may change considerably however. It needs to be tunable power supply, and if the inductors are tunable then that will help to match each elements res. freq. Inductors will be either air core or ferrite.
However with the above audio amp circuit, I used a full wave bridge rectifier and charged a 0.5uf @2000v cap and discharged it on a metal grid. I then experienced a stinging shock through the air and it struck me across the arm and sholder. (I didn't touch anything, just the discharged the cap with a tiny arc). However I have not been able to replicate that at this stage..
This should be discussed on another thread though, not here as it is arkzero's signal generator thread.
Cheers.
Originally posted by fzzzy
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Generally I work with one element at a time. I have found that the better results are achieved with lower values of capacitance. 0.1uF and below. Oil filled, ceramic, mika, (I am currently working with vacuum types). When using the car audio amplifier I found that large values of inductances are better. When the resonance is achieved the resistance of the network goes way down (it's like the resistances of the coils are all in parallel and resistance goes way down). This results in frying my amp transistors. Adding resistance to the coils is wasting energy i feel.
So I work with one element at a time and I can achieve about 2000volts with one element (Ferrite core inductors and oil filled glass capacitors - I forget the values right now) and have managed to light up 4 full size fluro tubes with the one wire. 8 fluro tubes with the two wires connected - then I blew my amp again.
I have been re-thinking this one and I have shifted my thoughts to a higher voltage powersupply (rather than a car audio amp) similar to a regular tesla spark gap primary. This will drive a circuit in an almost a dead short or low resistance condition. Then the optimum components values may change considerably however. It needs to be tunable power supply, and if the inductors are tunable then that will help to match each elements res. freq. Inductors will be either air core or ferrite.
However with the above audio amp circuit, I used a full wave bridge rectifier and charged a 0.5uf @2000v cap and discharged it on a metal grid. I then experienced a stinging shock through the air and it struck me across the arm and sholder. (I didn't touch anything, just the discharged the cap with a tiny arc). However I have not been able to replicate that at this stage..
This should be discussed on another thread though, not here as it is arkzero's signal generator thread.
Cheers.
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