foretelling a massive industry shakeout?

I’ve heard rumors that my former employer, Micron Technologies, is finally killing its floundering LED lighting ambitions, at least at the fixture level.  Micron has a long, sad history of starting “hobby businesses” in an attempt to diversify outside of its core memory-chip business; Micron already killed its foray into PV Solar, which actually had far more traction then the LED group.   Micron is clearly at fault for its own failure to achieve any meaningful traction in the hot LED market over the course of four years.  But I think it is a great example of what you will see over the … Continue reading foretelling a massive industry shakeout?

thermal conductivity vs. convection rates

  If you are a specifier trying to sort through “good” LED fixtures from “junk” LED fixtures, many of the design + engineering trade-offs in the product are often obfuscated.  Heatsink design is one of those areas.  Sometimes “good” LED fixtures require big-ass heatsinks; sometimes they have no apparent heatsink.  Why? There was a smartly written post explaining the need to balance thermal conductivity of materials versus the convection rate of the overall heatsink design.  In sum, a highly thermally-conductivity material (i.e. aluminum) does not necessarily help if the overall convection rate of the heatsink does not match the  flow rate of … Continue reading thermal conductivity vs. convection rates