Article View: sci.electronics
Article #3306Re: A pathetically simple question...
From: Greg Bell
Date: Mon, 02 Oct 1989 00:16
Date: Mon, 02 Oct 1989 00:16
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1191 bytes
jans@tekgvs.LABS.TEK.COM (Jan Steinman) writes:
>They're re-triggerable, and lack a lot of the nasty behavior of the infamous
>555. Plus, you get two of them in a DIP. For a 10 second delay, try 10 Mohm
Speaking of the nasty behavior of the 555, is there any way to "desensitize"
the trigger input so that it doesn't trigger when you turn on a flourescent
light? (or a TV, or ...) The problem is that the 555 is fast... ie. it
reacts to extremely brief negative going spikes on the trigger line, right?
I've tried slowing the thing down with bypass caps, but it never helps much...
Greg Bell_________________________________________________________
Hardware hacker |
Electronics hobbyist | UUCP: uunet!serene!pnet12!gbell
EE major at UC San Diego |
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!ginosko!uakari.primate.wisc.edu!xanth!ukma!gatech!hubcap!ncrcae!ncr-sd!serene!pnet12!gbell From: gbell@pnet12.cts.com (Greg Bell) Newsgroups: sci.electronics Subject: Re: A pathetically simple question... Message-ID: <981@serene.UUCP> Date: 2 Oct 89 00:16:06 GMT Sender: root@serene.UUCP Organization: People-Net [pnet12], Del Mar, CA Lines: 16