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Article #14Re: Using mobile phone as an internet radio
From: Jeff Liebermann
Date: Thu, 11 Oct 2012 16:47
Date: Thu, 11 Oct 2012 16:47
38 lines
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3883 bytes
On Thu, 11 Oct 2012 03:13:01 -0400, "Michael A. Terrell" <mike.terrell@earthlink.net> wrote: >Jeff Liebermann wrote: >> >> On Mon, 8 Oct 2012 06:27:05 -0700 (PDT), George Herold >> <gherold@teachspin.com> wrote: >> >> >Hi SEB. Well I sent an email to Don klipstein on this topic. And >> >have permission to copy his reply. >> ><from Don K. below> >> >> >2: In incandescent traffic signals, the bulbs for yellow last >> >longer than for red and green. So even after being switched on >> >and off about a million times, on-time is still a significant >> >factor in life expectancy. >> >> That means for my proposed test comparing a 50% duty cycle flashing >> light bulb, with one that is on continuously, the continuous light >> bulb will burn out first. That's the opposite of what I saw with the >> theater marquee bulbs. Now, I'm really tempted to run the experiment. > Was there any vibration in that theater marquee? Nope unless you count the movie audio pumped in from the theater section as vibration. The lobby and foyer lights were probably on a different circuit from the marquee lights, which may have had different voltages, glitches, surges, etc. I suspect that there were also some switching transcients on the marquee side. That was 45 years ago, and I didn't think to measure any of that. I just kept replacing light bulbs. -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558
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From: Jeff Liebermann <jeffl@cruzio.com>
Newsgroups: uk.tech.digital-tv,24hoursupport.helpdesk,uk.telecom.mobile,sci.electronics.basics,sci.electronics.repair
Subject: Re: Using mobile phone as an internet radio
Date: Thu, 11 Oct 2012 09:47:40 -0700
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