Breaking News
Newest First | Oldest First | Threaded View
<<   <   Page 3 / 3
User Rank
re: Cree claims LED price-performance breakthrough
Bert22306   2/7/2012 9:51:22 PM
I don't think that SiC semiconductors are anything particularly new. And, according to when applied to LEDs, SiC seminconductors are used to create blue LEDs. That yellow colored phosphor is what changes to light to white. Here are the types of semicondictors used to create different colors, according to that URL: "Silicon carbide (SiC), indium gallium nitride (InGaN), and zinc selenide (ZnSe) produce blue LED’s. "Gallium phosphide (GaP), and gallium nitride (GaN) produce green LED’s. "Gallium arsenide/phosphide (GaAsP) produce red, orange and yellow LED’s. "Aluminum gallium arsenide (AlGaAs) produces red and infrared." It goes on to say that white light can be made by combining red, green, and blue, although I'm pretty sure that's the more expensive way of making a white LED. The cheaper approach is just to use a blue plus a phosphor.

User Rank
re: Cree claims LED price-performance breakthrough
AshokS   2/7/2012 9:42:56 PM
I think they do pay for themselves even at the current prices. I replaced 3 50W halogen bulbs on my kitchen hood with 8W LED lamps which are brighter which means I can operate them at a lower dimmer setting. Bulbs were $20 each. savings per year at 5hrs a day for 360 days at 11c per kWh = $7. so return is in 3 years approx. This is conservative since we now keeps the main kitchen lights off most of the time since all we need is lights over the stove at least in the daytime. Earlier, we had to turn all the lights on for an extra 65W for 5x13W CFLs.

Robotics Developer
User Rank
re: Cree claims LED price-performance breakthrough
Robotics Developer   2/7/2012 9:30:55 PM
Given the cost of the bulbs, the savings can accrue over time but with the limited lifetimes (power electronics typically) I am not sure the bulbs will ever pay for themselves based on electrical usage. I do know that in a number of applications they are very nice - quick to start and energy efficient (more for the PR and customer experience than real savings). Some companies will want to jump on the bandwagon just for the green-ness of the bulbs, again maybe more PR than anything else.

User Rank
re: Cree claims LED price-performance breakthrough
qerqwe   2/7/2012 9:15:58 PM
"very reliable, trust us" Actually I would expect the LEDs themselfs to OK, it is everything else. So far I have not heard of any benefit of purchasing such technology for my home.

User Rank
re: Cree claims LED price-performance breakthrough
Sanjib.A   2/7/2012 6:17:19 PM
Well, what is the reliability or life of these silicon carbide technology based LED lamps from Cree vs. the current LED technologies?

<<   <   Page 3 / 3 Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)

What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Are the design challenges the same as with embedded systems, but with a little developer- and IT-skills added in? What do engineers need to know? Rick Merritt talks with two experts about the tools and best options for designing IoT devices in 2016. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.
Like Us on Facebook
Special Video Section
LED lighting is an important feature in today’s and future ...
The LT8602 has two high voltage buck regulators with an ...
The quality and reliability of Mill-Max's two-piece ...
Why the multicopter? It has every thing in it. 58 of ...
Security is important in all parts of the IoT chain, ...
Infineon explains their philosophy and why the multicopter ...
The LTC4282 Hot SwapTM controller allows a board to be ...
This video highlights the Zynq® UltraScale+™ MPSoC, and sho...
Homeowners may soon be able to store the energy generated ...
The LTC®6363 is a low power, low noise, fully differential ...
See the Virtex® UltraScale+™ FPGA with 32.75G backplane ...
Vincent Ching, applications engineer at Avago Technologies, ...
The LT®6375 is a unity-gain difference amplifier which ...
The LTC®4015 is a complete synchronous buck controller/ ...
The LTC®2983 measures a wide variety of temperature sensors ...
The LTC®3886 is a dual PolyPhase DC/DC synchronous ...
The LTC®2348-18 is an 18-bit, low noise 8-channel ...
The LT®3042 is a high performance low dropout linear ...