PSN-L Email List Message
Subject: Re: laser seismograph
From: "Larry Cochrane" cochrane@..............
Date: Tue, 6 Nov 2001 18:40:43 -0800
I like the 741 op-amp circuit. It has three different ways of =
controlling the gain!
-Larry Cochrane
Redwood City, PSN
----- Original Message -----=20
From: Al Allworth=20
To: psn-l@.................
Sent: Tuesday, November 06, 2001 6:28 PM
Subject: Re: laser seismograph
Hi,
This looks like it might be a poorly thought out attempt to build a =
device similar to
the laser ring detectors tried by those in New Zealand and elsewhere.
I like the 741 op-amp circuit. It has =
three=20
different ways of controlling the gain!
-Larry Cochrane
Redwood City, PSN
----- Original Message -----
From:=20
Al=20
Allworth
Sent: Tuesday, November 06, =
2001 6:28=20
PM
Subject: Re: laser =
seismograph
Hi,
This looks like it might be a poorly thought out =
attempt to=20
build a device similar to
the laser ring detectors tried by those in =
New Zealand=20
and elsewhere.
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Larry Cochrane <cochrane@..............>