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View Diary: The rise of LED light bulbs (218 comments)

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  •  Disagree. LOVE the electric blue of LEDs. (23+ / 0-)

    The other colors are much purer than incandescents as well. Also, you can hook up a lot more strings together with LEDs which makes connecting to timers much easier.

    •  I prefer mine in the yellow part of the lighting (7+ / 0-)

      spectrum, they look more like the incandescents they are replacing and in my opinion, they are easier to read with.  You do, however need to be careful if you are using a dimmer circuit.  Make sure the LED's packaging says "Dimmable" because some dimmers can cause premature destruction of the LED's power supply or flickering light.  You should ask the manufacturer or lighting sales person who is truly knowledgable about the kind of dimmer that should be used.  LED lights generally perfer full voltage and some manufacturers recommend Pulse Width Modulation (PWM) dimmer circuits, with the advantage that they always come on at full voltage, but the switching action is so fast, it does not result in flicker, and it preserves the full life rating of the bulbs.

      I have transitioned about half of my lights to LED and have never liked or much used compact flourescents because I didn't want to use mercury with its recycling requirements, their poor (for me) life performance, their hard starting when installed in a cold place and poor light quality.  In my view, LED's are far superior for cost, life and reduced maintenance.  Their ability to run cold, a real plus for Christmas tree lights is also a benefit I like.

      Republicans are like alligators. All mouth and no ears.

      by Ohiodem1 on Fri Dec 21, 2012 at 08:11:09 PM PST

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    •  I suspect that that purity of color (6+ / 0-)

      is part of what makes LEDs less attractive to some people (and more attractive to others.) Similarly, the fact that all LEDs of the same color are really the same color -- none of the tiny variations in spectrum or brightness that you get with incandescent bulbs -- may be a negative or a positive, depending on who's beholding them.

      I think my eyes prefer the aesthetics of the incandescent bulbs, but the energy savings of the LEDs makes them more pleasing to my brain.

      Let us all have the strength to see the humanity in our enemies, and the courage to let them see the humanity in ourselves.

      by Nowhere Man on Fri Dec 21, 2012 at 08:50:12 PM PST

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      •  Except for "white" LEDs (7+ / 0-)

        Most "white" LEDs are really blue LEDs (amazingly bright and efficient nowadays) plus some yellow phosphor that's excited by the blue light.  In theory, the blue and yellow mix in your eyes to produce something that looks white.  In practice, it's really hard to get the blue and yellow balanced properly, which is why you see a blue tinge on "white" LEDs.  The other problem is that the balance gets out of whack as the LED ages.  This is not well understood, since LEDs have been used as indicators though most of their existence rather than for lighting.  The higher power needed for lighting makes them deteriorate faster.

        There are true "all color" LEDs which have red, green, and blue LEDs in the same package.  However, they're more expensive and it's hard to get the currents balanced so that you get true white.

        Isn't this fun?

        Better to hide your tax returns and be thought a crook than to release them and remove all doubt. [Adapted from Abraham Lincoln]

        by Caelian on Fri Dec 21, 2012 at 10:30:00 PM PST

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