Re: What efficiency?!

To: tesla-at-pupman-dot-com
Subject: Re: What efficiency?!
From: Richard Hull <hullr-at-whitlock-dot-com>
Date: Mon, 13 Mar 2000 05:19:55 -0800
Tesla List wrote:
> 
> >From kukkonen-at-cc.hut.fiTue Nov 19 21:49:37 1996
> Date: Tue, 19 Nov 1996 13:05:04 +0200 (EET)
> From: Kristian Ukkonen <kukkonen-at-cc.hut.fi>
> To: Tesla List <tesla-at-poodle.pupman-dot-com>
> Subject: Re: What efficiency?!
> 
> On Mon, 11 Nov 1996, Tesla List wrote:
> 
> > > > guys at CEBAF wind their own on hula hoops!! For megamp currents and
> > > > integrate over time with IC op amp integrators. [RH]
> > > Basically a current transformer. What I envisaged was to place the
> > > coil around the grounded discharge rod (LV end of things). I had
> > > trouble imagining why sec. current should be so difficult to measure.
> > > Malcolm
> > If you think that a nice long spark won't come of that grounded rod to a
> > small CT, guess again!!  I've seen it happen and have a couple of fried
> > front ends to prove it.  Use a hula hoop or a core whose diameter is
> > about 1/3rd the length of the spark itself!
> > Richard Hull, TCBOR
> 
> Why not "simply" use a fiber-optic link between the scope and CT?  CT-unit
> would be floating.. This might include AD of the measurement data (and
> sending the data via fiber in digital form)  and then a datalogger
> (computer)  recording the data from the fiber.. One could then run
> fourier-analysis etc. to the data..
> 
> One of those things on my "must try some time" list..
> 
> Kristian Ukkonen.
> 
> Kristian,

The fiber optic link is the only way to go.  I would imagine the link 
would not be an easy or casual thing either.  Their is still the emitter 
circuitry right there at the coil!  Good luck with it.

Richard Hull, TCBOR