RE: Triggered spark gap resistors

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

Original poster: "Ted Rosenberg by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Ted.Rosenberg-at-radioshack-dot-com>

Paul: I am operating this morning on 2.5 hours of sleep. The Hangman's House
of Horrors closed last night/this morning. Pls excuse any dopey typing.

I followed Marc's and Terry's original insertion point and quickly had a
super hot resistor pair. I contacted Terry as Marc was 'out of pocket' as we
say in TX. Terry suggested an alternative location (across the HEI as
opposed to across the 120V) which worked and the resistor pair was no longer
a toaster. But then, (and I really cannot recall why) I think there was
another exchange between Terry and myself and the last position of the 8/8
ohm pair was in line (series) with the HOT side of the HEI.

Now, does the resistor pair "do something?" I have NO clue what-so-ever.
Marc has since stated that they wound up being used in the first place "by
accident." (His words) And no one else has done any evaluation of this
strange issue.

My $6M coil as I call it, just finished a very successful run at the haunted
house.
I am sure that the reliability, duty cycle, lack of a need for maintenance
or tweaking is greatly due to Marc's design. I took more photos last night
and I will take more once the coil comes home this weekend.

I know this isn't a terribly scientific response. It is only what happened
and how we got where we are. Your plan to run a 240V arrangement will likely
blaze new trails. Good luck and best wishes for success.

Safety First

Ted

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Wednesday, October 31, 2001 10:32 PM
To: tesla-at-pupman-dot-com
Subject: Triggered spark gap resistors


Original poster: "Paul Arrowsmith by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <p_t_arrowsmith-at-hotmail-dot-com>

I am about to build a triggered spark gap as per the excellent instructions 
posted by Ted, except for a few changes as I will be using 240V 50Hz here in

Australia.
The very low value resistance across the output of the fan speed controller 
does seem severe to me and I am concerned about putting a near short circuit

on the output of the dimmer. I saw that there was a lot of posts about this 
but did not catch any resolution to this problem.
Can someone please update me on the correct resistor value and position in 
the circuit.
Thanks in advance, Paul A.


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