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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