Re: average spark length

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jeremy Scott by way of Terry Fritz <teslalist-at-qwest-dot-net>" <supertux1-at-yahoo-dot-com>


12KV/30mA = 40,000 ohms impedence Z

Charge Time = Z * Cp * 5
Charge Time = 40,000 * .000000004F * 5
Charge Time = .008s

Power = 12Kv * 30mA = 360W
Max Power per Bang = 360W

Cap Joules = .5 * Cp * Vp^2
Cap Joules = .5 * .000000004F * (16968^2)
Cap Joules = .58J

Power = Energy / Time

360W = .58J / .00161s

1.7 * SQRT(360W) = 32.2" = 2.7'

You'll want: 120BPS, firing on 180 and 360 degree
angles of the NST voltage sine wave, allowing the
full half cycle to charge your capacitor.

Quench after 1.6ms of gap conduction, and use a 4nF
capacitor.

--- Tesla list <tesla-at-pupman-dot-com> wrote:
 > Original poster: "Rodney Goolsby by way of Terry
 > Fritz <teslalist-at-qwest-dot-net>" <jeronimo-at-bright-dot-net>
 >
 > I know that John Freau's equation says that the
 > spark length for a 12/30
 > NST is 3 feet (or very close), but in actuality what
 > is the average sparks
 > people get from any TC powered by a 12/30 NST?
 >
 >