PSN-L Email List Message

Subject: preamplifier filter
From: S-T Morrissey sean@...........
Date: Thu, 20 Apr 2000 02:02:22 -0500 (CDT)

To Cap and others who asked:

The schematic of the seismic preamplifier with the 4-pole
low pass Bessel filter can be found at:
under the section:
stmmisc.html "PSN INFO ... SLU Seismic Network"

I had previously posted the old 1980 pencil drawing, but about
a year ago I redrew it and updated some details. I just got
around to scanning the new drawing to the web page.


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