RE: Gap Question

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

Original poster: "Luke" <Bluu-at-cox-dot-net> 

Yup I know.
I am not talking the actual resistance although the numbers you gave are
helpful.  I did not know there was an approx ohmic value placed on the
gap.

I am only firing out ideas to hope I can grasp the concept of this
negative resistance thing.

The idea that there is a negative voltage current curve make a little
sense to me.

In part I am wrestling with trying to understand that.
And in part I am having a problem with the term Negative Resistance.
Seems like a misleading term.  Seems it refers to the negative V I curve
and not actually a resistance that is negative.  So I guess as well as
wanting to understand I am trying to come up with a way to conceptualize
this so it makes sense.
Luke Galyan
Bluu-at-cox-dot-net
http://members.cox-dot-net/bluu

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Tuesday, February 24, 2004 3:49 PM
To: tesla-at-pupman-dot-com
Subject: Re: Gap Question

Original poster: Finn Hammer <f-h-at-c.dk>



Tesla list wrote:
 >Original poster: "Luke" <Bluu-at-cox-dot-net>
 >So if the current goes up the gap widens.
 >If the gap widens the resistance of the gap goes down.
 >If the resistance went down when the current went up
 >That is resistance not negative resistance.

Luke,

I may read you wrong, but it looks to me like you overlook the fact that

the current is not determined by the value of the gap resistance, but by

the combination of cap voltage and size, and inductance of the primary
coil. The resistance in the gap is in the 1-5 ohm range, the surge
impedance of a primary is in the 100s of ohms.

Ipri = U*sqrt(Cpr/Lpri).

Cheers, Finn Hammer


snip