Re: Spark plugs

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

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi John,

Here is the chart:

http://hot-streamer-dot-com/temp/MMCcapSales.gif

Here is a computer program since that transformer is not on the chart:

http://hot-streamer-dot-com/temp/MMCcalc2xls.zip

Or a simple basic program:

http://hot-streamer-dot-com/TeslaCoils/programs/Mmccalc2.zip

or the basic math behind it:

http://hot-streamer-dot-com/TeslaCoils/MMCInfo/MMCPower4.html

Spark plugs work for awhile but they get very hot since there thermal 
dissipation is poor.  But for a small low powered coil they might work well.

Cheers,

         Terry




At 02:18 PM 12/3/2002 -0600, you wrote:
>Hello Everyone,
>
>I recently parted out an old portable heater that we used for working on 
>machinery during the winter, and saved the ignition transformer out of 
>it.  It's only 5000v at 20ma, but was hoping to make a small TC out of 
>it.  With all of the recent talk about MMCs, it was mentioned that there 
>was a chart out there to help determine capacitance requirements based on 
>transformer specs.  I personally remember having seen the chart, and Terry 
>mentioned that he had a copy of it next to his computer, but I can't seem 
>to find it again.  I had it saved on my computer, but due to problems 
>several months back, it was lost along with everything else.
>
>My second inquiry is this:  Has anyone ever used non-resistor spark plugs 
>for a gap in a small TC?  Several in series with small gap spacing should 
>do the trick, and I wouldn't think electrode erosion would be a big 
>problem, considering the environment that they are designed to work 
>in.  Besides, I think that it would look cool, and if performance drops, 
>just "put a new set of plugs in 'er".
>
>Thoughts appreciated,
>
>John Richardson