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Article #12Re: Using mobile phone as an internet radio
From: George Herold
Date: Thu, 11 Oct 2012 12:55
Date: Thu, 11 Oct 2012 12:55
36 lines
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3742 bytes
On Oct 10, 11:50 pm, Jeff Liebermann <je...@cruzio.com> wrote: > On Mon, 8 Oct 2012 06:27:05 -0700 (PDT), George Herold > > <gher...@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. Experiments can be very useful. I'd worry most about how you turn on the bulbs. Maybe just some simple relays? 1,000 hours isn't all that long. (or are you going to over-voltage the bulbs?) I guess I'd want at least 10 bulbs in each group. Say 60 watts..... 1200 kW-hrs. That's looking like more money than I'd want to spend on the electricity. George H. > > -- > Jeff Liebermann je...@cruzio.com > 150 Felker St #D http://www.LearnByDestroying.com > Santa Cruz CA 95060http://802.11junk.com > Skype: JeffLiebermann AE6KS 831-336-2558
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Subject: Re: Using mobile phone as an internet radio
From: George Herold <gherold@teachspin.com>
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