[Prev][Next][Index][Thread]
Re: GM coil record
> Hi Ed,
>
> Where have you been!?! ;-))
>
> Most of the details are in my old post at:
> http://www.pupman.com/listarchives/2000/January/msg00257.html
>
> Also
> http://users.better.org/tfritz/site/misc/GMHEI.ZIP
>
> Your four inch arcs are typical for a "novice" attempt at the GMHEICSLR
> ;-)) Basically your are running it as a transformer or induction coil. I
> remove the steel core (which just saturates and eats all the energy) and
> run the primary and secondary winding's in a true Tesla coil configuration
> with a primary capacitor, spark gap, etc. It makes a BIG difference!!
>
> Probably the heat and wasted energy is killing your standard configuration.
> You are putting a few joules into the thing like I do but it is never
> making it the them big output arcs. Think of making a Tesla coil out of it
> and maybe you will get sparks up to 13.249 inches ;-)))
>
> Cheers,
>
> Terry
Terry:
My question referred to internal breakdown voltage, as indicated by
maximum spark length. I looked at your site and understand what you're
doing, but don't understand why your coil doesn't break down at a
voltage corresponding to a much shorter spark. Seems to me that you
should have at least as much of a breakdown problem (insulation stress)
as what I've done. Were you just lucky in your choice of coils (got
exceptional ones, that is)?
Ed