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Here are some pointers to useful audio electronics design articles that touch grounding and shielding issues: Grounding and Shielding Audio Devices Grounding The Circuit Designer’s Companion →

Cracking open a 24-port switch so you don’t have to posting at Hackaday point to an article Tear-Down of an HP ProCurve 2824 Ethernet Switch that is worth to check out for everybody interested in device tear-downs and Ethernet. Tear-Down of an HP ProCurve 2824 Ethernet Switch article shows you the technology inside a managed →

I wrote last week about EMF measurements. Here is more information on the DT-1180 2.3″ LCD Screen Electromagnetic Radiation Detector I used for electrical field measurements. DT-1180 2.3″ LCD Screen Electromagnetic Radiation Detector is a meter designed for electric fields and RF field measurements. DT-1180 2.3″ LCD Screen Electromagnetic Radiation Detector measures low frequency electrical →

Programmers often say that regular expressions are fun … I can say that they can be fun or annoying depending on case. Now you can try regular expression fun in a completely new way: Try your hand at a regular expression crossword. This is a very hard crossword puzzle you solve by interpreting regular expressions. →

Should the power wires be overhead or underground? Underground power line feasibility article talks on the feasibility on using underground lines instead of overhead lines. Both underground and overhead lines have their good and bad properties. Burying power lines is not cheap, it is said the cost would be $1M per mile to convert existing →

Balanced inputs and outputs have been used for many years in professional audio, but profound misconceptions about their operation and effectiveness still survive. Conventional wisdom about them is sometimes wrong. Balanced Line Technology web page gives you a good look at the balanced line technology in audio applications. The balanced line technology is also applicable →

I wrote about EMF measurements and told that for magnetic field measurements I have used Velleman Magnetic Field Detector VTEMF. Velleman describes the product uses: “Detects the harmful electromagnetic fields generated by high voltage cables, computer and television screens, microwave ovens, waterbeds, electric blankets, etc.”. That sounds reasonable. The description continues “Scientists believe that electromagnetic →

An electromagnetic field (also EMF or EM field) is a physical field produced by moving electrically charged objects. It affects the behavior of charged objects in the vicinity of the field. The electromagnetic field extends indefinitely throughout space and describes the electromagnetic interaction. It is one of the four fundamental forces of nature. EMF measurement →

Ethernet is 40 years old. In 1973, Bob Metcalfe sent an internal memo for a LAN design. Ethernet at 40: Its daddy reveals its turbulent youth is a well worth to read article that tells about the youth of Ethernet and why it became the dominant LAN standard. It also tells how much Ethernet owes →

Logic Sniffer Java client is an alternative OLS-client provides a software client for the Open Bench Logic Sniffer logic analyser hardware (that is based on ideas from open source SUMP analyzer). Software works also with SUMP compatible devices and Bus Pirate hardware. When tested with the demonstration data the software seemed to work quite well →