PSN-L Email List Message
Subject: Re: Resistive Damping
From: John or Jan Lahr JohnJan@........
Date: Wed, 23 Aug 2006 22:12:42 -0700
I've posted details of Chris Chapman's magnetic damping system here:
This is for an AS-1 system, but is easily modified for a Lehman.
Chris' Lehman design is shown here:
At 07:15 PM 8/23/2006, you wrote:
>In a message dated 23/08/06, Benji.Johnson@.................. writes:
>>I would like to update my Lehman style seismometer from that of
>>using oil damping to using resistive damping
> Electromagnetic damping is easy to adjust and it is not
> temperature sensitive, or messy.
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