[time-nuts] LED reliability
stanley_reynolds at yahoo.com
Wed Apr 30 13:47:08 EDT 2008
Quality and design still play a large factor as I replaced several 12V RV bulbs with new White High-Intensity LEDs and they all failed within the first 60 days.
----- Original Message ----
From: Poul-Henning Kamp <phk at phk.freebsd.dk>
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
Sent: Wednesday, April 30, 2008 12:12:56 PM
Subject: Re: [time-nuts] LED reliability
In message <20080430165656.3C300BE3B at ip-64-139-1-69.sjc.megapath.net>, Hal Murr
>> LEDs been viable since at least the early 70's? Talk about planned
>How reliable were the early LEDs? When did they start to get used in high
Many of them are still happily emitting their faint red or green light.
>The best reliability story I heard (many years ago) was about installing
>another trans-Atlantic telephone cable. They used tubes long after
>transistors were out. They knew how long the tubes would last. They didn't
>have much data on transistors yet.
Actually, that's not entirely correct: They had reliability info
on transistors and they sucked.
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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