re: Bipolar Coil (was: Coiling Goals)

To: tesla-at-pupman-dot-com
Subject: re: Bipolar Coil (was: Coiling Goals)
From: Mark Finnis <mefinnis-at-medicine.adelaide.edu.au> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Mon, 27 Dec 1999 16:10:53 -0700
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

At 01:24  26/12/1999 -0700, Terry Fritz <twftesla-at-uswest-dot-net> wrote:

>Hi Brian,
>
>         Your white paper on your mini twin coil is super 
> nice!!  Extremely well
>written and informative.  There were two things that caught my eye.
>
>In the middle of the first page, you talk of the EMMC with the 10Meg
>resistors and say "This EMMC module retains a noticeable charge for at
>least 30 seconds."  However, The EMMC should be virtually discharged in
>only 5 seconds?  If one charges a 0.056 cap to 20,000 volts and then
>discharges it with a 10Meg resistor, the voltage will fall from 20kV to
>2.59 volts in 5 seconds.  I don't see how it could be shocking you after 30
>seconds.  Perhaps it is static charge or something.  If the cap is not
>discharging very quickly, we should probably figure out why.  A lot of
>people use MMCs and if there is a problem with the discharge we should
>probably figure it out ;-)


Hi Terry,

Sorry, I have forgotten all my math (well 99.9% of it anyway) and don't 
recall the equation for the time constant of a RC circuit, however ......

For my cap (15 caps in series) the R = 15 x 10 Meg  =  150 Meg

This might just affect the half-time ??

Cheers

Mark