Re: Collected coil data (fwd)

---------- Forwarded message ----------
Date: Tue, 28 Jul 1998 08:34:32 +1200
From: Malcolm Watts <MALCOLM-at-directorate.wnp.ac.nz>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Collected coil data (fwd)


> Date: Fri, 24 Jul 1998 20:11:52 -0600
> From: terryf-at-verinet-dot-com
> To: tesla-at-pupman-dot-com
> Subject: Collected coil data
> Hi All,
>         Here is a summary of the coil data that was sent to me.  The coils
> were all so different form one another that I hesitate to make any judgments
> at this point.  I was surprised how varied the coils were.  Hopefully, this
> data will be of use to many of us.  It is interesting to see how such a wide
> mix of coils are operating.  This is a giant post but I thought all the
> details would ge of interest to many.  Plese SNIP the data in any responses.
> :-))

> Coil:2          Malcolm Watts
> Fundamental Frequency:  145.3 kHz
> Primary Inductance: 12 uH
> Primary Capacitance:    100 nF
> Primary Firing Voltage: 7-8 kV (lab xfmr)
> Primary Energy:     3.2 J
> Spark Gap Type:     Single Static
> Coupling Coefficient:   0.12
> Secondary Inductance:   45 mH
> Secondary Capacitance:  26.3 pF
> Terminal Type:      Only 1/4" copper ring.

There is a 9" sphere mounted several inches above the coil but all 
the best discharges issue from the copper ring below it. This happens 
mostly in dry air which also gives the longest discharges. I haven't 
correlated this result with air pressure.

> Arc Length:     51 inches
> Arc Character:  Single streamer Between white and thin purple.
> Square root (Ls/Cs):        41364