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David L. Farquhar, computer security professional, train hobbyist, and landlord
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    I half-heartedly checked Home Depot's web site today, and saw they had 429-lumen, 8.6-watt (40W equivalent) LED bulbs at my local store. Finally!

    So when I had a chance, I drove over, plunked down my 19 bucks, and brought one home.

    It's not perfect. But I like it an awful lot.

    The post I got an LED bulb, and it is fabulous. appeared first on The Silicon Underground.


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    PC Magazine asks when it’s worth upgrading to the new Philips L Prize-winning LED bulb, lamenting its high price and long payback time. I can only say what I plan to do, based on my experience with high-efficiency bulbs. I

    The post When to upgrade to new LED bulbs appeared first on The Silicon Underground.


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  • 09/19/12--15:10: The lightbulb reinvented
  • Timothy Hunt asked me (via Twitter) if I’ve seen the lightbulb reinvented, an LED bulb that screws into a standard socket but has wi-fi capability so you can tune its light temperature and otherwise control it with a smartphone. I

    The post The lightbulb reinvented appeared first on The Silicon Underground.


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    My latest lighting experiment is a 900-lumen bulb from G7, which is rated at 9 watts and priced at around $16. It’s advertised as equivalent to a 65W incandescent. I’ve had two of them for about two months now, and

    The post Early impressions of G7’s 900-lumen 9W LED bulb appeared first on The Silicon Underground.


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    LED lighting seems to change constantly. I read about Cree’s LED bulbs a good 12-18 months ago and they sounded too good to be true. In a way, they were, because you couldn’t buy them anywhere. The wait is finally

    The post Another month, another go-to LED bulb appeared first on The Silicon Underground.


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    Cree joined Phillips in offering an LED bulb in the 1600-lumen class, suitable for replacing 100W incandescents. The Cree bulb costs $5 less than the Phillips competitor, in unsubsidized markets. (Many utilities subsidize energy efficient bulbs because it’s cheaper than

    The post Cree releases a $20 100W-equivalent LED bulb–but do you want one? appeared first on The Silicon Underground.


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    There’s a lot of talk about compact fluorescent life expectancy. I actually tracked my CFL lifespan. Here’s what I found. I noticed this week that a compact fluorescent bulb in the kitchen had burned out, so this week I bought an

    The post Compact fluorescent life expectancy appeared first on The Silicon Underground.


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    So I took the plunge and bought a package of the Ecosmart 40w equivalent soft white LED bulbs last week. As long as you’re aware that it’s not dimmable–let me repeat that, it’s not dimmable–it’s a really good bulb, especially

    The post Home Depot’s Ecosmart 40w replacement is a good $5 LED bulb appeared first on The Silicon Underground.


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    Later this week, Philips will be releasing a new, cheap LED bulb at an introductory rate of $5 for a pack of two. They are 800 lumen bulbs, equivalent to a 60w incandescent in light output, use 8.5 watts to give

    The post Philips’ new LED bulbs are cheap but have caveats appeared first on The Silicon Underground.