Technical Editor Margery Conner's PowerSource streams the latest developments in electronic power design and related technologies. Follow Margery on Twitter at: http://twitter.com/margeryc. en-us http://www.edn.com/blog/1470000147.html?nid=3002 Copyright 2009 Reed Business Information. Subject to its Terms of Use Sun, 08 Nov 2009 09:28:54 PST http://www.edn.com/blog/1470000147/post/1570050357.html?nid=3002 Do you have a good topic for a technical paper for the 2010 “Designing with LEDs” Workshop to be held March 17 at the Santa Clara Conve... http://ad.doubleclick.net/clk;219509080;12103198;y?http://digital.ni.com/express.nsf/bycode/exkpnt?opendocument&metc=mtxzsk National Instruments introduces PXI Semiconductor Suite, a collection of 10 new software-defined modular instruments for mixed signal chip test. View white paper to learn more. http://www.edn.com/blog/1470000147/post/1350050335.html?nid=3002 Reader Jim K left a comment on Monday’s post, “Micro-inverters offer one solution for optimizing solar efficiency,” asking for a ... http://www.edn.com/blog/1470000147/post/1000050300.html?nid=3002 The lead-in to this post is here: Micro-inverters offer one solution for optimizing solar efficiency. Probably the most well-known micro-inve... http://www.edn.com/blog/1470000147/post/620050262.html?nid=3002 Power-generating installations of solar photovoltaic panels are changing. Rather than the massive solar farms of the past10-20 years, smaller resid... http://www.edn.com/blog/1470000147/post/1920049992.html?nid=3002 When I saw the headline over at Make magazine, “Eternal flame replaced by LEDs,” I thought I understood immediately what the article wo... http://www.edn.com/blog/1470000147/post/1410049941.html?nid=3002 Cree is inviting folks to submit their photos of lousy lighting. Each month Cree will give away 5 of Cree’s LED-based LR6 recessed down... http://www.edn.com/blog/1470000147/post/70049807.html?nid=3002 In general, batteries are good at storing energy and not so good at charging or discharging rapidly. Supercaps, on the other hand, are excellent at... http://www.edn.com/blog/1470000147/post/1120049712.html?nid=3002 Lest anyone thought the LED-lit, bubble-themed arena design of the Beijing Sports Cube was a fluke, here’s the winning design for the 2014 Wi... http://www.edn.com/blog/1470000147/post/890049689.html?nid=3002 Here’s another entry into the e-book reader market, following on the heels reports that Barnes & Noble would also be fielding their own K... http://www.edn.com/blog/1470000147/post/1660049366.html?nid=3002 In the rush to embrace LEDs as the Great Hope for energy-efficient lighting, it’s easy to forget that LEDs themselves are only part of the de... http://www.edn.com/blog/1470000147/post/1030049303.html?nid=3002 In spite of their high lighting efficiency, the cost of high-brightness (HB) LEDs for commodity applications is not low enough yet to compete head-... http://www.edn.com/blog/1470000147/post/270049227.html?nid=3002 Philips Electronics has become the first company to submit an entry for the L Prize competition, which is sponsored by the Department of Energy and... http://www.edn.com/blog/1470000147/post/110049211.html?nid=3002 We now have two OSRAM development kits to give away at the free “Designing with LEDs” workshop in Chicago on October 6. The kits aren&r... http://www.edn.com/blog/1470000147/post/1960048996.html?nid=3002 September 1st marked the beginning of the phase-out of the incandescent bulb in European Union countries. Intrepid reporters at the British newspap... http://www.edn.com/blog/1470000147/post/1220048922.html?nid=3002 [Are you interested in learning about the latest in designing with HB LEDs? Sign up now for EDN's free "Designing with LEDs Workshop", Oc... http://www.edn.com/blog/1470000147/post/770048877.html?nid=3002 In the past, it’s seemed to me that panels on digital power are mostly a love-fest led by the power IC manufacturers that make, you guessed i... http://www.edn.com/blog/1470000147/post/850048685.html?nid=3002 Take a look at a couple of comments on the previous post regarding the efficacy of production LEDs, Real-world numbers on production HB LEDs: 32% e... http://www.edn.com/blog/1470000147/post/370048437.html?nid=3002 Several months ago I posted efficiency numbers indicating that 82% of the power to a HB LED is lost as heat, leaving only 18% converted to light.&n... http://www.edn.com/blog/1470000147/post/1300048330.html?nid=3002 China’s Ministry of Industry and Information Technology is proposing a total ban on exports of terbium, dysprosium, yttrium, thulium, and lut... http://www.edn.com/blog/1470000147/post/280048228.html?nid=3002 Most high-brightness LED spec sheets give the light output of the LED at 25°C Tj. However, HB LEDs in luminaires spend most of their lives... http://www.edn.com/blog/1470000147/post/1970047997.html?nid=3002 Economists have a problem when they attempt to track the economy of a poor country: Accurate statistics are hard to come by. Either the numbers are... http://www.edn.com/blog/1470000147/post/260047826.html?nid=3002 OSRAM and Siemens (which is the parent company of OSRAM) teamed up to do a life-cycle assessment of LED-based lights, specifically in comparison wi... http://www.edn.com/blog/1470000147/post/1050047705.html?nid=3002 OSRAM Opto Semiconductors announced lab results for a direct-emitting green indium-gallium-nitride (InGaN) laser diode. In pulsed mode operation at... http://www.edn.com/blog/1470000147/post/1680047568.html?nid=3002 Here’s a nice video from Steve Dahl of Digikey showing how you can use a heat gun to solder high-brightness LEDs to an aluminum substrate hea... http://www.edn.com/blog/1470000147/post/1990046999.html?nid=3002 Sometimes I get the feeling all roads lead back to LEDs. I’ve been seeing a lot of new ambient light sensors (ALSs) lately from Intersil, Ro...