# What would be the waveform of output coming from rotary spark gap with ac input?

If I have an input of ac current 50/60 hertz into a capacitor of 40nanofarads and after that a rotary spark gap(2000-5000 discharge per second) , what would be the waveform of output? And how will the waveform change in case of static spark gap? I am trying to understand tesla coil.

• Very noisy. You might want to simulate your actual setup, there are probably some variables Jul 4 '16 at 12:17
• Ac current ----> Capacitor------->Rotary spark Gap/Static Spark Gap----> What would be the waveform of output? A general idea of waveform would be fine Jul 4 '16 at 12:42
• Your input current frequency is exact: 50 or 60Hz, the spark gap has to synced with this frequency, so 50 or 60Hz. The output is a rectified 50/60 Hz, the spark gap shall conduct only at peak value of sine wave. Jul 4 '16 at 12:56
• Would it become a square wave dc ? Jul 5 '16 at 2:50
• and would the frequency remain 50/60 hz inspite of 5000 rotations per second? Jul 5 '16 at 8:41