On 16:59, Paul Nicholson wrote:
Just a note: If the major diameter is increased with the minor diameter fixed the capacitance increases, but the breakout voltage doesn't remain the same, but increases too. For example, a set of ideal toroids with constant minor diameter of 0.1 m and major diameter varying from 0.3 m to 1 m result in (assuming breakout at 30 kV/cm):Conversely the toroid is a good shape for throwing long arcs because we can increase the capacitance (major diam) while leaving the breakout voltage fixed (minor diam). With the two diameters to play with, we have to some extent independent control of the two factors.
Size Cap (pF) Vbrk (kV) 0.3x0.1 13.528 282.95 0.4x0.1 17.200 328.91 0.5x0.1 20.738 367.50 0.6x0.1 24.164 400.64 0.7x0.1 27.498 429.62 0.8x0.1 30.753 455.32 0.9x0.1 33.941 478.36 1.0x0.1 37.071 499.23 Antonio Carlos M. de Queiroz _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla