Original poster: "JT Bowles" <jasotb@xxxxxxxxxxx>
YOU SAID:
"A very good equation that works well to find a coils peak output voltage is:
Vt = Vf x SQRT (Cp / (2 x Cs))
Where:
Vt it the peak top voltage
Vf is the spark gap firing voltage
Cp is the primary capacitance
Cs is the effective secondary capacitance
SQRT square root function "
* if i know the distance, can you tell me the sparkgap firing
voltage? it is 7.5 to 8 mm, at 30MA. 8000v?
* primary capacitance? you mean just the capacitor? 7.8nF (.0078 uF)
* secondary capacitance, with toroid, is 18.6 pF (.0000186 uF)
wtf? that means my coil only makes 117.3KV!!!!? Cant be true. I wont buy it