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Re: What efficiency?!



Tesla List wrote:
> 
> > > Subject: Re: What efficiency?!
> > Subject: Re: What efficiency?!
> > > Subject: Re: What efficiency?!
> 
> >From bert.hickman-at-aquila-dot-comMon Nov 11 22:08:47 1996
> Date: Sun, 10 Nov 1996 23:11:42 -0800
> From: Bert Hickman <bert.hickman-at-aquila-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: What efficiency?!
> 
> Tesla List wrote:
> >
> > > Subject: Re: What efficiency?!
> >
> > >From hullr-at-whitlock-dot-comFri Nov  8 22:24:32 1996
> > Date: Fri, 08 Nov 1996 11:32:11 -0800
> > From: Richard Hull <hullr-at-whitlock-dot-com>
> > To: tesla-at-pupman-dot-com
> > Subject: Re: What efficiency?!
> >
> > Tesla List wrote:
> > >
> Big snip


> > I got tired of recal.ing the coils, and purchased a wide band Pearson
> > current monitor recently for $900.00 out of pocket. (ouch)  Good
> > instruments improve results and reduce hassles.   This is a good one and
> > can handle 200,000 amps with a bandwidth of from .5 hz to 4Mhz.  It's the
> > cat's pajamas!
> >
> > Richard Hull, TCBOR
> 
> Richard,
> 
> Thanks for a very practical and useful post!! Just what is it that the
> Pearson has that one of your Rogowski coils doesn't - what do they do
> differently that justifies $900?
> 
> -- Bert --

Bert,

The object is to make the coil relatively high inductance,, but remain 
resonant at very high frequencies and achieve a resonant Q of 
.00000000000000001. (ultrawide bandwidth-zero resonant rise).  They have 
a process that is potted in tar and sealed in a solid metal framework.


  I'm not tearin' in ta' mine fella'!  Not at $900.00!  One might only 
guess.  They gotta' shoot for maximized losses, zero rise, and infinite 
bandwidth in a total passive device.  That's why they get the big bucks!

Richard Hull,  TCBOR