PSN-L Email List Message

Subject: Setting magnetic damping level
From: "Robert O. Green" rog@..........
Date: Sat, 21 Feb 2009 17:12:25 -0800

I am a novice and working on a small vertical seismometer.  I have 
Larry's amplifier and A/D.  My current approach to assessing the damping 
is to move the coil some distance from the magnet and watch the wave 
form following a 1 mm drop of the arm.

Are there other approaches?

How should the properly damped waveform look?

I have moved the VS under the house into the crawl space for now.  This 
is far better than my shaking house.



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