PSN-L Email List Message

Subject: Re: VBB response, contd.
From: George Harris gjharris@.............
Date: Fri, 28 Jan 2000 20:01:54 -0500

barry lotz wrote:

>  I would like any feedback as to what I was measuring. Could piezoelectric mat'l
> be
> used for hinge material and their output measured?

A piezo sensor can be thought of as a capacitor which is sensitive to force (or
acceleration).  It is a
relatively high impedance device, so any resistance across the output will quickly
discharge the voltage.
Since the frequency response is normally high, it would be hard to see most seismo
signals.  The most
likely would be a bender element with a mass on the free end.

George Harris


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Larry Cochrane <cochrane@..............>