Re: long sparks-low watts
From: Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: Sunday, June 22, 1997 4:22 PM
Subject: Re: long sparks-low watts
Perhaps I can start to answer some of these questions:
> From: John H. Couture[SMTP:couturejh-at-worldnet.att-dot-net]
> Sent: Friday, June 20, 1997 1:21 AM
> To: Tesla List
> Subject: Re: long sparks-low watts
> Have you compiled data from these tests that would compare Tesla pri
> voltage, pri cap size, secondary inductance, etc. This would be interesting
> info for new coilers.
And everyone else I would think. Well, here are some figures from the
charting exercise. So far, there appears to be a single common
thread running through them: those achieving "synergy" are getting the
greatest amount of power from the wall plug to the primary cap with
minimal losses. There is very little in common between one system and
another regarding the coils per se.
I will leave a blank where I have not been given or been unable
to calculate the power with any degree of certainty. Where neon
transformers have been used and power has not been stated, I have
used the neon rating. I have around 40 systems charted. I have had to
estimate cap voltages under different break conditions so some of the
figures will be outliers. In some cases, cap voltage would be sagging
badly at high BPS. The coil below listed at 60" for estimated primary
power of nearly 2kW is an example.
WallPlug E x BPS Longest Spark Length
-------- ------- --------------------
360VA 82W 15.5"
5kVA - 80"
3.2kVA 566W 65"
6.2kVA 2.3kW 84"
45kVA 40kW 31 feet
1.1kVA 139W 36"
1.6kVA 280W 52"
5kVA 4.4kW 90"
700VA 90W 20"
- 1.95kW 60"
- 141W 30"
- 300W 36"
- 3.37kW 80"
8.8kVA 5.1kW 12 feet (peak stated to be near 18')
3.2kVA - 60"
720VA 225W 48"
1.8kVA 554W 63"
3.5kVA 800W 62"
1.1kVA 292W 36" (coil stated to be out of tune)
7kVA 6.6kW 121"
750VA 100W 22"
- 9.2kW 162"
6.25VA - 1"
33VA 20W 3" (my single resonator mini)
33VA 20W 4" (with extra parasitic resonator)
1.8kVA 570W 60+"
490VA 136W 36"
45kVA 32kW 25 feet
360VA 69W 14"
360VA 69W 19" (different resonator, k, pri tune)
540VA 50W 16"
- 3.7kW 90"
230VA 50W 13" (I estimated more BPS than 2xfmains)
- 240W 48" (again)
450VA 74W 18"
1.7kVA - 36"
- 160kVA 40 feet
That last one is my estimate of how Robert Golka's system is doing.
Sorry the figures are not ordered. The trends seem clear though.
225W/720VA neon transformer looks to be the best neon transformer
performance and this coil has set a record for that power so I think
it's fair to say that you cannot do better than 50% of a neon's kVA
rating which is not great news.