Margery Conner

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Capacitor selection helps achieve long lifetimes for LED lights

This presentation was originally given by Andrew Smith, product manager, LED Lighting at Power Integrations for EDN’s May 2011 live LED event in San Jose. The next free LED event will be part of DesignWest on March 27, 2012. Register now at this link .) Consumers often see LED lamp failures. If you look at the growing number traffic lights using LEDs, for example, you might see... More

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Learn all the basic algorithms to program your own self-driving car in 7 weeks

Last month Sebastian Thrun, Stanford professor and Google fellow, and develop of Google’s self-driving car, announced he was leaving Stanford teaching (he will remain as a research fellow) to focus his efforts into reaching a whole world of students by starting his own online teaching company, udacity . This guy is not one to let the skid marks oxidize under his tires: He has... More

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Trading off lifetime vs. cost in LED light capacitor selection

There were a couple of comments in the Samsung LED light teardown that I wanted to highlight in a separate blog post so that they didn’t get lost in the comments thread. The first was alluded to by Andy Smith of Power Integrations (the company that supplies light’s LED driver IC.) A couple of Alert Readers pointed out that the application note for the IC family... More

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Notes from APEC: SiC diodes quals; New GaN drivers; STMicro/3Sun

Transphorm has said repeatedly that it’s not just about announcing new products in the ultra-fast, new technology switching FET space of GaN-on-silicon, but providing production quantities of full-qualified parts. The company, which at last year’s APEC announced its entry into the GaN/Si FET market with its EZ-GaN products, Monday announced fully-qualified EZ-GaN power diodes .... More

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Samsung LED light bulb teardown includes objective dimming numbers

Samsung sent me one of their new LED sno-cone-type bulbs to try out. The bulb specs are: 550 lumens at 10Wat a color temperature of 3000K, and comes with a 5-year warranty. Its list price is $19.98 . First off, how does the bulb perform? Here’s a light pattern of the Samsung LED: (To find out more about the light pattern ring, click here .) For comparison’s... More