Article View: sci.electronics
Article #4770Re: LED refresh rate
From: Rob Warnock
Date: Tue, 05 Jun 1990 09:24
Date: Tue, 05 Jun 1990 09:24
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1270 bytes
In article <30513@cup.portal.com> John_A_Pham@cup.portal.com writes: +--------------- | Can someone tell me what is the average time for a LED to fully lit | and vice-versa? I remember it is around 3Khz or was it 300Khz? +--------------- It depends on the LED, but more on the driving ciruits. I have driven the red LEDs in H-P low-cost plastic fiber-optic cables at 10 MHz and above. The 1300nm LEDs in FDDI controllers run at 125 megabaud (100 Mb/s of 4/5 coding). Even dirt cheap LEDs can be run at several megahertz. Of course, good luck trying to build a dirt cheap *detector*... ;-} -Rob ----- Rob Warnock, MS-9U/510 rpw3@sgi.com rpw3@pei.com Silicon Graphics, Inc. (415)335-1673 Protocol Engines, Inc. 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!mips!sgi!rpw3@rigden.wpd.sgi.comReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!mips!sgi!rpw3@rigden.wpd.sgi.com From: rpw3@rigden.wpd.sgi.com (Rob Warnock) Newsgroups: sci.electronics Subject: Re: LED refresh rate Message-ID: <61580@sgi.sgi.com> Date: 5 Jun 90 09:24:19 GMT References: <30513@cup.portal.com> Sender: news@sgi.sgi.com Reply-To: rpw3@sgi.com (Rob Warnock) Distribution: usa Organization: Silicon Graphics, Inc., Mountain View, CA Lines: 21