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Article #7580Re: LED flasher
From: Gordon Hlavenka
Date: Tue, 02 Oct 1990 21:55
Date: Tue, 02 Oct 1990 21:55
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>... I have the LED's all set and working for running lights etc. >How... preytel... does one make a "flasher". I'm basically using only >2 volts er so imput current. I assume there is a simple (cheap?) way? > Best recommendation is to use an LM 3909 LED flasher chip. If you're going to the Shack, you might as well just buy flashing LEDs. They come in Green (PN 276-030) or Red (PN 276-036) and the catalog lists them at $1.29 each. You can't get much simpler (electrically) than 2 wires. From the modelling perspective, if you built the whole thing around the LEDs you might be better off with a flasher chip. Another advantage of this is the fact that all your flashers would be synchronized. Personally, I'm partial to the 555; take your pick. (Personal philosophy note-- The 555 and 324 are the peanut butter and ketchup of electronics: If you have enough of them you can build anything.) ----------------------------------------------------- Gordon S. Hlavenka cgordon@vpnet.chi.il.us Disclaimer: Yeah, I said it. So what?
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<2708f468-467.2sci.electronics-1@vpnet.chi.il.us>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!decwrl!shelby!rutgers!att!mcdchg!laidbak!obdient!vpnet!cgordonReferences:
<1990Sep30.043045.22757@sisd.kodak.com> <14193@brahms.udel.edu>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!decwrl!shelby!rutgers!att!mcdchg!laidbak!obdient!vpnet!cgordon From: cgordon@vpnet.chi.il.us (Gordon Hlavenka) Newsgroups: sci.electronics Subject: Re: LED flasher Message-ID: <2708f468-467.2sci.electronics-1@vpnet.chi.il.us> Date: 2 Oct 90 21:55:05 GMT References: <1990Sep30.043045.22757@sisd.kodak.com> <14193@brahms.udel.edu> Lines: 22