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MECA Electronics

Kirt's Cogitations™ #131

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Will White LEDs Dethrone the Incandescent Bulb?

White LEDs are now available, thanks to progress in Gallium Nitride (GaN) and Indium GaN (InGaN). One versions combines a blue LED with a yellow phosphor to generate white light (slightly yellowish). Another uses a UV LED to excite red, blue and green phosphor (ala a fluorescent lamp) to get white light. Efficiencies of 20 lumens/watt have been demonstrated - which is better than an incandescent bulb. Someday in the not-too-distant future you will likely see them in Wal-Mart where the 100-year-old-technology bulbs sit today.

A huge collection of my 'Factoids' can be accessed from my 'Kirt's Cogitations' table of contents.

Topical Smorgasbord, another manifestation of Factoids, are be found on these pages:

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 |

All pertain to topics that are related to the general engineering and science theme of RF Cafe.

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Copyright: 1996 - 2018
Webmaster:
    Kirt Blattenberger,
    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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