Re: What efficiency?!

To: tesla-at-pupman-dot-com
Subject: Re: What efficiency?!
From: Bert Hickman <bert.hickman-at-aquila-dot-com>
Date: Sat, 23 Nov 1996 10:22:42 -0800
Tesla List wrote:
> 
> > Subject: Re: What efficiency?!
> 
> >From hullr-at-whitlock-dot-comFri Nov 22 08:49:51 1996
> Date: Tue, 14 Mar 2000 20:48:21 -0800
> From: Richard Hull <hullr-at-whitlock-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: What efficiency?!
> 
> Tesla List wrote:
> >
> > >From MALCOLM-at-directorate.wnp.ac.nzThu Nov 21 14:40:56 1996
> > Date: Fri, 22 Nov 1996 07:45:52 +1200
> > From: Malcolm Watts <MALCOLM-at-directorate.wnp.ac.nz>
> > To: tesla-at-pupman-dot-com
> > Subject: Re: What efficiency?!
> >
> > On the topic of fibre-optic monitoring....
> >
> > > > 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
> >
> > This might not directly relate to the problem being solved here but I
> > recently had the idea of using two fibres to monitor my rotary gap
> > position/speed and that was to use one to pipe light to the gap and
> > the other as the pickup.
> >
> > Malcolm
> 
> Malcolm,
> 
> The use of the arcs own light is a great idea and occured to us about a
> year and a half ago.  Glass fiber would be best, but with plastic fiber
> and a good lens system little lose or attenuation would be present.  With
> a very fast PIN diode detector, a lot of valuable data can be gathered
> regarding what is actually taking place in the gap.  This is in addition
> to the original info sought. (Dwell, quench and rep rate.)  Also, an
> audio tape recorder can record the gap noise and later the exact rep rate
> can be determined with either a counter or a scope.
> 
> Richard Hull, TCBOR

Richard and Malcolm,

I was wondering how to easily measure dwell times when running - this
should work for vacuum, rotary, or air blast gaps! Thanks for some great
ideas!!

-- Bert --