Re: LTR question, high voltage wire.

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

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi Jim, All,

Just to add here regarding high current components and wire. I had an
experience today at work trying to
kill a polyswitch which has been burning up in the field. I used 18awg
through a 60A pulse solenoid and 2
car battery's for 24v as a high current supply. Couldn't kill it. Found I
could only draw 25 amps. I
doubled up on the wire, and presto - I fried 3 of them quickly (battery
connection arc caused a high
enough voltage/current pulse to carbon track the molecular layer -
simulated the 40A relay used in the
field - clamping diode should be the solution). What interested me was the
single 18awg wire was limiting
current. I assumed it would be large enough, but I was wrong.

In regards to primary circuits, I can see the need to have a high current
conductor regardless of flat or
round types (I really don't see a benefit between one or the other). It
makes me wonder how many TC's are
running weak primary circuit wiring and not realizing it may be current
limiting the circuit. I'm not
sure, it's just a thought I had.

Take care,
Bart

Tesla list wrote:

> Original poster: "R Heidlebaugh by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <rheidlebaugh-at-zialink-dot-com>
>
> on 10/19/01 7:08 AM, Tesla list at tesla-at-pupman-dot-com wrote:
>
> > Original poster: "Jim Mora by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> > <jmora-at-jetlink-dot-net>
> >
> > Hello Terry and All,
> >
> > If the Cornell caps can take the voltage swing, which seems likely,
this was
> > an
> > obvious over sight on my part. I paid 3x for the Panasonic from Digi-Key
> > for equal
> > strings. Poof :-')
> >
> > Given adding the 15 nf to the cap bank (35 nf total -at-15/120), in your
> > experience,
> > how well will this LTR work with an air blast gap vrs the standard resonant
> > tuning? Performance? Also, I'm still curious if I can use HV wire to
connect
> > between the xformers and the safety gaps, all else will be flat copper.
I am
> > assuming this is only important in the tank; but, we all know what assume
> > means:-)
> > All opinions welcome.
> >
> > Thanks Much,
> > Jim Mora
> >
> > Terry Fritz wrote:
> >
> >> Hi Jim,
> >>
> >> The caps are 0.150uF not 1.5uF.  If you put 10 in a row you get a 20kV cap
> >> at 0.015uF or 15nF.  15 in a row gives 0.010uF or 10nF.  Isn't that the
> >> value you wanted?
> >>
> >> Cheers,
> >>
> >> Terry
> >>
> >> At 12:16 AM 10/18/2001 -0700, you wrote:
> >>> Hi Terry and fellow coilers,
> >>>
> >>> Ok, so I have found out what an LTR cap bank is ( a T. Frizt post). As I
> >>> understand it, the bank is set at 1.5 times the capacity of the
> >>> reasonate frequency of the NST resoanace cap bank, additionally
> >>> protecting the NST and adding more energy.
> >>>
> >>> So that leaves me with (15) 1.5uf 2k CD caps from the geek group, which
> >>> are not of value in my present coil configuration unless you have some
> >>> idaes...
> >>> Snip>
> >
> >
> >
> Jim. The circuit to the capacitor, primary, and spark-gap are high current
> circuits. High current wire of high voltage insulation is hard to get. I use
> the center wire of RG8 coax and put it inside of 5/16 clear plastic tubing
> to make high voltage/high current wire to make my connections. It works for
> me.
>     Robert H

--
Barton B. Anderson
http://www.classictesla-dot-com