Hello, Friedel!!!! here is...
----------->A reply from ELAL<---------
On a nice Sunday (31-Aug-2003 to be precise) I got a message like this:
FB> I have something like this, but to bring it to the surface could take
FB> hours and still I don't remember the details. Why don't you try and pick
FB> up the 15kHz with some microphone OP and filter, a comparator, I think
FB> this would do the trick *without lot's of problems.*
right....
a. Much more complex circuit than some current detection (reqest for a *simple*
circuit, remember!)
b. Security monitors have CRT's scanning at 15kHz as well, making the entire
idea useless
--
-� Never ascribe to maliciousness
that can be adequately explained by incompetence �-
--
Author: Ferry Schouten
INET: [EMAIL PROTECTED]
Fat City Network Services -- 858-538-5051 http://www.fatcity.com
San Diego, California -- Mailing list and web hosting services
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