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*To*: tesla-at-pupman-dot-com*Subject*: RE: power v energy measurements, was Re: SSTC does 10 foot sparks*From*: "Tesla list" <tesla-at-pupman-dot-com>*Date*: Fri, 25 Jun 2004 07:57:42 -0600*Resent-Date*: Fri, 25 Jun 2004 08:01:52 -0600*Resent-From*: tesla-at-pupman-dot-com*Resent-Message-ID*: <GL8HqB.A.2lD.GBD3AB-at-poodle>*Resent-Sender*: tesla-request-at-pupman-dot-com

Original poster: "Steve Conner" <steve.conner-at-optosci-dot-com> >Before we can go any further this type of test should be >understood and approved by the majority of coilers. OK, let me try it. I can set my OLTC II up such that it uses about 3000 watts and produces an arc about 4ft 6ins long. I'm not sure how you would test whether this is in solid contact with the target, but from sound and appearance, it looks that every one of the 600 bangs per second results in a hit. I can provide proof of this, but I shouldn't need to as 4'6" with 3kW is nothing spectacular. So by John's formula, we have: 1. Consumption, 3000 joules in one second 2. Output, 600 sparks in one second 3. Each spark contains 3000/600=5 joules 4. Spark is 54" long 5. Result, 10.8 inches of spark per joule My mini OLTC comes in even better- with 300W consumption, 1200 sparks per second, and a 9" controlled spark, it gets 36 inches per joule. >you will find that the 8.25 inches is a record >that is hard to beat. Do I get a cookie then? The odd thing is, that the performance of my OLTC II is considered to be pretty poor, by the standards that most coilers use. It has a "Freau factor" (1 minute sparklength divided by square root of power) of only 1.3 when configured for maximum spark length. And the mini OLTC is even worse with a Freau factor of 0.65. The OLTCs just "cheat" at John's metric because they use a high breakrate and relatively low energy, so they achieve their output mostly by streamer growth. *** I suggest the following metric, which I think reflects the priorities of everyday coilers. To be evaluated over a 2 minute run: One point for every inch of spark length 2 points for every MMC cap you explode 20 points if you strike the ground 50 points for striking the ceiling (indoor venues only) 75 points for setting your secondary on fire And double your score if your coil is solid state :))))) Steve C.

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