PSN-L Email List Message

Subject: RE: homebrew shake table?
From: "David Saum" DSaum@............
Date: Wed, 13 Feb 2002 12:46:22 -0500

I bought a $2 piezo speaker from RS, broke
it apart to get the element, put it under my
geophone, drove it with a few mv of 1 Hz
sine wave directly from my function 
generator, and it works great!

Thanks for all the suggestions,


> From:    The Lahrs 
> Date:    Tue, 12 Feb 2002 20:06:23 -0700
> I don't think my shake table design would work well for low amplitudes
> and low frequencies.  It's good for shaking down model buildings and
> things like that.
> How about using a piezoelectric crystal under the edge of a
> stiff board.  A low frequency electrical signal would drive the
> crystal.
> Cheers,
> John


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