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Re: Triggered RQ gap



Original poster: "Jason by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jasonp-at-btinternet-dot-com>

Weazle,

> Why apply the trigger between the first and second segments?
> I'm triggering my 7 segment RQ/TCBOR gap with the trigger
> applied to the middle, or fourth, segment.  This maintains
> a balance with respect to the end segments and also makes
> use of the parallel return path to the trigger transformer
> offered by the bypass caps in the "Terry" filter.

Fair enough, i'm sure that it works fine. The reason that I consider this
design to be the best is that the cap voltage breaks down the gap, instead
of the ign. coil voltage. The power from the ignition coil only has to
travel across maybee the first two gaps before the actual cap voltage
continues the breakdown process. Once this happens, the ign. coil power then
travels along the power arc made by the cap. This means that the total ign.
coil voltage is kept to a minimum, and since I am using a cheap-ish iggy
coil, I want to keep the voltage to a minimum. The RQ gap will break don in
a similar way to a marx generator. Triggering the first breakdown is a good
way of getting the gap to start the firing. I would personally use this
setup for a system where the xfmr voltage is too low to successfully and
reliably trigger the gap, for example a MOT system. IMHO, end triggering
works better, but i am sure that it just depends on your workmanship and
logic :). Mind you, tesla always liked to see symmetry in his work.....

Regards,
Jason