Philips wins $10M L Prize for LED-based 60W replacement bulb article tells that Philips wins $10M L Prize for LED-based 60W replacement bulb. The bulbs had to meet or exceed a set of requirements: greater than 900lm at 10W or less (efficacy of greater than 90W/lm) at a color-corrected temperature (CCT) of 2700-3000K and a →
Write-only memory has been one of the best practical jokes on the electronics industry field. Write-only memory (WOM) is the antithesis of read-only memory (ROM). By definition, a WOM is a memory device which can be written but never read. The WOM concept is most often used as a joke or a euphemism for a →
Category 5 (CAT5) cable is a multi-pair (usually 4 pair) cable that consists of twisted pair conductors, used mainly for data transmission. Basic CAT5 cable was designed for characteristics of up to 100 MHz. Newer CAT6 cable is designed form 250 MHz. Nowadays there are applications where those cables is used to carry higher frequencies. →
The whole world seems to be going in ARM’s direction. ARM has practically taken the mobile phone and tablet markets. The latest version of Windows 8 will also run on ARM processors, Raspberry Pi is a $25 ARM based machine etc.. Slashdot tells that now the open source Arduino platform has a new member — →
Noise Reduction Techniques in Electronic Systems book except has some interesting reading on ground loops and inductive noise reduction. This is old but still very valid material from Henry Ott, the EMC, noise, and signal integrity guru. Read also Ground- A Path For Current Flow article which says: Consider ground as a low impedance path →
Friday special: Groovy Video Coat video I found on Internet: More details on electronics can be found on Groovy Video Coat pictures and this Video Coat Prototype video: →
Netflix’s Webkit-based UI for TV devices article says that Netflix uses WebKit, JavaScript, HTML5, and CSS3 to build user interfaces that are delivered to millions of game consoles, Blu-ray players, Internet-connected TVs, and devices. Matt McCarthy and Kim Trott, device UI engineering managers at Netflix, have just published 50 presentation slides from their recent talk →
AC voltage levels: 0.316V The most common nominal level for consumer audio equipment is -10 dBV, 0.316 volts root mean square (VRMS). 0.7746V The reference voltage for the decibel unloaded (0 dBu) is the voltage required to produce 1 mW of power across a 600 ohms load (approximately 0.7746 VRMS) 1V The reference voltage for →
As we all know, a good LED could last very long up to 50,000 hours with with a good heat sink. But how is the LED driver electronics life? For common LED drivers there is at least one component is very weak. It’s the electrolytic capacitor. High Bay LED Lighting Driver Heat Dissipation Temperature Test →
Ever worry that robots are getting a little too smart? Thankfully, some people are dedicated to keeping our metal friends dumb. Bacarobo, the Stupid Robot Championship, is a showcase for just such robots. The contest originated in Japan (running in 2007 and 2008) before moving to Hungary in 2010. The competition has three main rules: →