On 2012-10-07 2:38, Brett Nordgren wrote:
> Hi all,
>
> I just finished up documenting a mechanical-analog electrical model for
> geophones.  It can be incorporated in a circuit simulation program such
> as Spice, and allows you to look at the overall system performance with
> respect to a ground velocity excitation.  It has been particularly
> useful when modeling Dave's various negative-resistance period-extending
> circuits.  There are two commonly used methods for creating these
> analogs and the one used here is the one in which velocity is modeled as
> a voltage.
>
> It includes an Excel workbook for computing the analog equivalent
> component values from the geophone spec. sheet, and includes some examples.
>
> http://bnordgren.org/seismo/GeophoneModel.zip
>
>
> Regards,
> Brett
>
>
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Wunderbar !

Now if someone might also show us how
to build a poles and zero file for
our other programs ????

As a Layman one must rely upon those
better educated for in depth understandings
such as these.

Many better educated people do not want
to share their superior understanding
without receiving gratuities of one kind or another.

What is such a in depth education for if not
to educate others.
Possibly to become a member of some snobbish
group of not so nice individuals like CIA ???

Oh, well, Rub A Dub Dub
Thanks for the grub,
Yeah, Professor Ah, Errr.,GOD ???

Best Regards,
Geoff




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