Re: Triggered spark gaps for coils

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

Original poster: "bob golding by way of Terry Fritz <twftesla-at-uswest-dot-net>" <yubba-at-clara-dot-net>

Hi Mark, all,
    How about triggering the gap from  a _small_ sync rotary. The power
could come from the main
transformer dropped thu a resistor to a suitable voltage. that way one
could have the advantage of
phase control and offset electrodes. It might last a bit longer than an
electronic sytem, and be easy
to adjust. If you did not want to use a resistor one of those pulse
transformers used in most computer
monitors to generate the ht might work. Plenty to ponder here.

cheers
bob golding


Tesla list wrote:

> Original poster: "Metlicka Marc by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <mystuffs-at-orwell-dot-net>
>
>  all,
> now that several ideas and comments on the actual gap have been
> presented, i would like to ask if anyone has any suggestions as to what
> might be some good triggering circuit configurations?
> an idea i had was to us a diac or sidac that could be adjusted to
> trigger at various levels of the wave from, say just past zero crossing
> to 99% of peak. pulsing it into a trigger or pulse transformer
> now don't hit me with the "just past zero won't work" because i
> understand, this is just a reference. what i'm looking for is solid
> circuit considerations, opinions and ideas.