Margery Conner

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Constant-current wall warts streamline LED driver design for lamps, cabinet lights

Consider the lowly wall wart power adapter. It finds use in millions of electronics devices as a cost- and power-efficient ac-dc voltage-regulated power supply. In effect, designers of electronics have outsourced their product’s ac-dc conversion, voltage regulation, and regulatory compliance to the wall wart. It’s a cost-effective solution for most low-wattage power supply... More

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100W-equivalent LED bulbs make their appearance

Philips was showing off a 100W LED replacement bulb at LightFair last week, which joins the ranks of candidates from GE and Osram Sylvania. Although Philips wasn’t talking about production versions of the bulb, based on their past LED bulb announcements it’s likely it will make its appearance in the fall at retailers like Home Depot and Lowe’s with a price range of $50-70.... More

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Cree luminaires interface directly with EcoSystem lighting controller

While LED lighting is justifiably touted as being power miserly, it’s really how well they integrate into an intelligent lighting system that allows them a fast ROI/payback time, especially in commercial lighting installations. Cree, although perhaps best known as a LED component manufacturer, also is in the lighting fixture business, and now offers a version of its CR series... More

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VCs place their bets on advanced materials in power electronics

EDN doesn’t usually pay that much attention to what the financial backing is behind new companies – we generally leave that to our sister publication EETimes. However, Lux Research recently pointed out there’s a lot of the venture capital going into non-silicon power component start-ups – to the tune of over $200M. According to the report from Lux, “ Beyond... More

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Next week’s LightFair (aka LEDFair) promises newest in solid-state lighting

Next week is the lighting industry’s pre-eminent trade show, LightFair , which to be as accurate as possible should change its name to LEDFair. The show fills up the massive Las Vegas Convention Center, and virtually every booth there is showing off LED-based lights. Which is a little strange because as it stands today, LEDs have very little penetration into the general lighting... More