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All about electronics and circuit design

Futuristic computer interfaces

The Inquisitr article 5 futuristic interfaces describes some interesting futuristic ideas how to interact with computer. This article describes five futuristic type interfaces that will be presented at SIGGRAPH 2009. the same interfaces. The same five interfaces are also covered in Technology Review article Five Futuristic Interfaces on Display at SIGGRAPH. The first article had

Assembly Summer 2009 Festival

Assembly Summer 2009 is Finland’s largest computer festival. It takes place in Helsinki 6th to 9th of August 2009. ASSEMBLY is a four day computer festival, in which thousands of people and their computers spend the long weekend by meeting friends, playing games, surfing on the net, talking on IRC and enjoying the great productions

Understanding Service Availability

Today the dependability of the communications infrastructure and the applications flowing over networks is more important than ever. Users rapidly become dependent on new networked services to conduct their personal and professional lives. Users expect new, innovative distributed services to be delivered on demand and without interruption. Understanding Service Availability article tells that communications and

Floating measurements

A floating measurement reads the voltage between two points, neither of which is at ground potential. A most typical floating measurement done quite often is when doing voltage measurements with a battery powered multimeter. The floating insulated multimeter allows doing floating measurements of slowly changing signals easily. The advent of switching power supplies and motor

Syncing Music and Fireworks

Design News has published an interesitng on-line article Gadget Freak Case #128: Syncing Music and Fireworks on how Deane Williams fixed up his PC to synchronize fireworks with music. He used his PC’s parallel printer port to connect the circuit controlling the fireworks. The software was written in Agilent VEE 8.0 but Williams says it

Ethernet history

In 1973, Bob Metcalfe sent an internal memo to his colleagues at Xerox proposing a local system of interacting workstations, files, and printers. The devices would all be linked by one coaxial cable, he said, and would run within a local area network. He called the system an Ether Network, or Ethernet. And 36 years

MOSFET testing

Multimeters are very good tools to find out problems in electronics circuits and testing electronics components. Resistor measurement is found in practically all multimeters, capacitance measurement range is becoming more and more common and some high-end models can also measure inductance. Many multimeters have also possiblity to test bipolar transistors (Hfe measurement range), but I

Grounding outside

Inside building there are situations where you can see 60-115 V AC between different equipment grounding points. When going outside the building the voltage differences can between different grounding points can become larger. In electrical engineering, Earth Potential Rise (EPR) also called Ground Potential Rise (GPR) occurs when a large current flows to earth through