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Article #5461Re: pulsing LEDs
From: Narendra J Kulkarni
Date: Sat, 04 Aug 1990 00:50
Date: Sat, 04 Aug 1990 00:50
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If I remeber correctly, the persistance of vision allows eye to see the stabl e display ( flicker free ) even if the LED is pulse driven, The advantage of multiplexing is strictly for saving the components, actually at very high current, more current is wasted in heat generation in the LED, most LEDs have a linear region in which light output is proportional to drive current and by calculating the duty cycle one can determine the peak pulse current
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!aplcen!uakari.primate.wisc.edu!sdd.hp.com!decwrl!apple!portal!cup.portal.com!NanduReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!aplcen!uakari.primate.wisc.edu!sdd.hp.com!decwrl!apple!portal!cup.portal.com!Nandu From: Nandu@cup.portal.com (Narendra J Kulkarni) Newsgroups: sci.electronics Subject: Re: pulsing LEDs Message-ID: <32419@cup.portal.com> Date: 4 Aug 90 00:50:53 GMT References: <53169@iuvax.cs.indiana.edu> Organization: The Portal System (TM) Lines: 6