Cells vs. packets: What’s best in the cloud computing data center? article from few years back tells that resource constrained data centers cannot waste anything on their way to efficiency. One important piece on this is right communications technology between different parts of data center. In the late 1990s and early 2000s, proprietary switch fabrics →
Show agency presents Funny Led video is a Funny LED video to start 2013. Two LED displays and two actors is all you need to be astonished. In the second half of the video actors do some rather cool things with LEDs—especially the piano, trumpets and x-ray. →
One way to test electrolytic capacitors is to measure their capacitance. It does not tell the whole story of capacitor condition. Another usually more useful way to measure electrolytic capacitor condition is to use an ESR meter. EEVblog #365 – ESR Meter Bad Cap Monitor Repair video gives you tips how to use ESR meter →
One of the big trends of 2013 and beyond is the pervasiveness of technology in everything we do – from how we work to how we live and how we consume. Worldwide IT spending increases were pretty anemic as IT and telecom services spending were seriously curtailed last year. It seems that things are going →
EDN magazine articele Ground loops by Howard Johnson (Signal Integrity) article starts with question why in audio circuit designers avoid ground loops at all costs, yet in digital products you normally see a solid ground plane holding hundreds of circuits. This is a good question and the article gives answers to that. Audio designers like →
I write some time ago about USBEE AX clone. tubbutec blog writer got the remark about the bidirectional driver gave and investigated this a little bit further. It turned out you can modify this logic analyzer pretty easily to provide output capabilities. Adding output capability to a 10€ logic analyser article tells how you can →
Year 2013 will be year of cyber security. CNN expects more cyber wars this year. Cybercrime is on the rise, and last year we saw more and more computer virus attacks. Security company Kaspersky Lab warns of more new cyber-threats against enterprises and mobile devices. Cyber security also relates to mobile. Security becomes an increasingly →
Cell phones with build in cameras are replacing cheap pocket size digital cameras and video cameras. Best cell phone cameras can be better in many ways than cheap pocket digital cameras from few years back. And most people do not want to carry separate devices for each function (at least without a very good reason), →
A recent white paper from APC-Schneider Electric authored by Neil Rasmussen takes a hard look at grounding practices and the use of the signal reference grid in data centers. The Grounding and the Use of the Signal Reference Grid in Data Centers paper contends that signal reference grids are automatically specified and installed in data →
Here is a music video for this Friday. This Compressorhead: Ace of Spades video shows a true metal band. Compressorhead claims to be the worlds heaviest metal band. The band consists of robots made by Robocross. Metal plays itself. Sweet. →