Re: The Marx-like primary

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

Original poster: "K. C. Herrick by way of Terry Fritz <twftesla-at-qwest-dot-net>" <kchdlh-at-juno-dot-com>

Finn (copy: others)-

Thanks for your encouragement.  My next task--which I will likely
accomplish--will be to set up two gaps, of the exact kind I have in mind
for the finished assembly, and two capacitors, resonate the capacitors
from the mains, and then trigger those gaps into close to a short
circuit, every third half-cycle, for an extended period of time.  That
will tell me a) if the gaps will operate at all satisfactorily at the
relatively low voltage and b) if they will, then how long they will last
without requiring maintenance.  I'll keep everyone posted--and any
comments on what I have in mind will be appreciated.

As to your tube coil, I wish you success.  I do think that, for any tube-
or s.s.-coil, the best way to go is what I advocate: use the secondary
itself as the frequency-determining element.

Regards,

Ken Herrick

On Wed, 30 Oct 2002 16:30:36 -0700 "Tesla list" <tesla-at-pupman-dot-com>
writes:
 > Original poster: "Finn Hammer by way of Terry Fritz
 > <twftesla-at-qwest-dot-net>" <f-h-at-c.dk>
 >
 > Ken.
 >
 > I did, and would like to offer verbal ( in writing) support, in a
 > vain
 > attempt, that it might motivate you to go ahead.
 > I have not had success in porting your self tuned primary aproach
 > to
 > tube coils yet, but am working on it.
 >
 > Cheers, Finn hammer
 >
 > Tesla list skriver:
 >  >
 >  > Original poster: "K. C. Herrick by way of Terry Fritz
 > <twftesla-at-qwest-dot-net>" <kchdlh-at-juno-dot-com>
 >  >
 >  > For those who paid any attention to my Marx-like primary design a
 > month
 >  > or so ago, I've now simulated essentially the whole thing in
 > SiMetrix: 25
 >  > capacitors, 26 spark gaps; capacitors resonantly charged in
 > parallel from
 >  > the mains, discharged in series every 3rd mains half-cycle
 > through the
 >  > primary coil.  I get nice 15 KV-peak damped waves across the
 > coil.  The
 >  > trigger point for the gaps, at the center-tap of the coil,
 > exhibits only
 >  > about 300 V peak with respect to ground, so will work just fine
 > for
 >  > triggering the gaps with a small ignition coil.
 >  >
 >  > All very lovely in simulation.  Now I look for the motivation to
 > build
 >  > it...
 >  >
 >  > Ken Herrick
 >
 >
 >
 >