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Re: 3 Pahse Rotary Gap
Tesla List wrote:
>
> Original Poster: Greg Leyh <lod-at-pacbell-dot-net>
>
> > >Of course there is an alternative to using a 6-pulse
> > >rectifier stack -- THE 3-PHASE ROTARY GAP. <8^O
> >
> > OK ........ I'll bite .......... what exactly is this beast ??
>
> Imagine that each of your 3 HT secondaries had its own primary
> capacitor. The 3-PHASE ROTARY GAP would be synchronized to
> switch each cap into the primary only at its peak voltage point,
> of which there are now six per cycle (2 peaks per cycle per phase).
> This provides the advantage of 360PPS operation with every firing
> at the peak transformer voltage, and no rectifiers. Although this
> gap is not speed variable, one could operate at 240BPS or 120BPS
> selectively by inhibiting one or more of the phases with a contactor:
>
> CONTACTOR 1 - 1/3 POWER
> CONTACTOR 2 - 2/3 POWER
> CONTACTOR 3 - FULL POWER
>
> With this setup, no variacs OR motor speed controls are required.
> --
>
> -GL
> www.lod-dot-org
Greg,
I considered this system and in fact had detailed discussions with
Malcolm Watts about it (at the time being my idea I thought) about 2-1/2
years ago. The "big problem' is that you cannot capture the full power
capability of your power source and place it in every single repeating
'Bang'. At best you go to a lot more costruction trouble to make a
3-banger system that should perform no better than a much simpler system
on single phase power at 1.732X the ampacity of this 3-banger. As such I
dismissed this engineering idea, which initially appeared clever, as a
loser in practice. Do you know anyone with a large Tesla 'show only'
(as opposed to reseach) coil that *ever* demonstrates it at 1/3rd or
2/3rd's power of what it can achieve at full horsepressure?
Robert W. Stephens