@drnap1 Driver part of the cost depends on a lot of factors, how many LEDs, voltage, isolation, etc, etc. If you have a more specific area, then I can give more details. Typical cost reduction is about 30%.
Thanks for the talk Carol! I have heard that also phosphor converted Laser-diodes are now in development for automotive lighting. Are the requirements for those phosphors the same as for conventional high power pc-LEDs?
Does Ron's book specifically talk about driving LEDs? I heard in your talk that you were driving different frequencies into the LEDs. I also know there is yet more that can be controlled about the drive to give specific effects. Does he address that in his book?
Thanks, Carol, for the presentation. Alex seemed to believe that some LEDs produce light from silicon junctions (rather than silicon being used only for a substrate). One of us (Alex or me) has a misconception; can you clarify the situation? Specifically, do any LEDs produce light from from a silicon junction?
@drnap1 If your design allows multiple low power LEDs, and assembly cost insn't prohibitive, that's probably the way to go for lowest cost, at least for the near future, until high power LEDS come down in cost. There are other advantages for multple strings of LEDs in terms of redundancy.
I bet the driver has opportunities for cost reduction. This is a specialty of my partner, Ron Lenk. I've seen him improve on many power supply designs and reduce cost.
When it comes to the cost of a rear LED lamp assembly, 50% or more of the cost is the electronics. Is it cheaper now or will it eventually be cheaper to use few high power LEDs vs many low pwer LEDs and affect overall cost of lamp assemblies
Alex Wolfe is continually asking basic elementary questions where the answers are so basic they have been on Wikipedia and numerous online sources. This "Live Chat" is a waste of time. I was led to believe I might here state-of-the-art and up-to-date cutting edge discussion of products and technology. Instead, the moderator acts like he is giving a tutorial to investors!!! And this is a Design News broadcast??? Wake up!!!!
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Engineers at Fuel Cell Energy have found a way to take advantage of a side reaction, unique to their carbonate fuel cell that has nothing to do with energy production, as a potential, cost-effective solution to capturing carbon from fossil fuel power plants.
To get to a trillion sensors in the IoT that we all look forward to, there are many challenges to commercialization that still remain, including interoperability, the lack of standards, and the issue of security, to name a few.
This is part one of an article discussing the University of Washington’s nationally ranked FSAE electric car (eCar) and combustible car (cCar). Stay tuned for part two, tomorrow, which will discuss the four unique PCBs used in both the eCar and cCars.
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