Path: 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 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 |