Re: Many Things...

• To: tesla-at-pupman-dot-com
• Subject: Re: Many Things...
• From: Don Allen <dona-at-amigo-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Mon, 26 Jul 1999 23:15:14 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

At 07:25 PM 7/25/99 -0600, Tesla List wrote:

>Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>

Hi Terry, All,

>       I use 14 x 1800 volt MOVs on my neon protection circuit.  Running the
neon
>at 140VAC in was pretty hard on them.  It was interesting.  They get really
>hot and the output of the coil dropped way down as expected.  However, when

Do you have any pictures on your site of this protection circuit?

>on a curve trace or highpot to be sure...  The 1/4 inch ball bearing gaps
>work very well and got plenty of testing today :-))  The gap width is 0.186
>inch for each leg of the neon but the altitude here is 5300 feet so that
>does not apply for most people at lower altitude.  The 50 watt 5K resistors

Now that's an interesting point - Does high altitude make a significant
difference for the gap setting?

You're at the top of the state, but I'm at the midpoint (Crestone, Sangre
de Cristo mountain chain, 50 miles south of Salida) and the altitude
here is 8000 feet. 

I'm using  a modified RQSG with 11 gaps set at .030 using 1" copper 
pipe sections, 4" in length. With the SG hooked directly to the 15/60
NST, it fires pretty evenly at each gap. 

I'm also curious what kind of grounding system you use for your coils
in this rocky, dry soil of Colorado?

Don











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