Young people with an interest in electronics still have a cornucopia of kits to start with. As a youngster I had a crystal radio that picked up several local stations I listened to with a small headphone. You can still buy crystal-radio kits and many cost under $20.
Purportedly 20 times more efficient than competing devices, the AS1001 audio power amplifier IC (from Audium Semiconductor) enables battery-powered amplified speakers to run 3 hours per day for 10 months on a set of 1.5 V batteries. With 100 W peak power output, the amplifier runs on a set of four 'C' batteries.
Providing local control to mitigate the Arc Flash danger in Circuit Breaker operation, the Time Delay Control Switch Relay (TD-CSR) from Electroswitch provides for a manually-initiated time-delay trip or close operation. SCADA operation is not required, and a flashing LED notifies the operator of a pending trip or close operation.
Elma Electronic offers flexible light guides that facilitate a wide range of adaptable panel indicating options. They can be bent in 90-degree or other angles. This allows the LED to be mounted to a PCB while fixed to a panel at a right angle. Available in various lengths, the LED mounting can be
Extending existing designs based on E4.2- and EE5-cores, EPCOS has developed a series of current sense transformers based on EE12.6-cores. Currents up to 40 A can be measured with this series, and owing to their SMD design, these transformers are particularly suitable for compact DC/DC converters. The primary winding is
Americans Elizabeth H. Blackburn, Carol W. Greider and Jack W. Szostak won the 2009 Nobel Prize in medicine on Monday for discovering a key mechanism in the genetic operations of cells, an insight that has inspired new lines of research into cancer. It was the first time two women have been among the winners of the medicine prize.
The Federal Trade Commission will require bloggers to clearly disclose any freebies or payments they get from companies for reviewing their products. It is the first time since 1980 that the commission has revised its guidelines on endorsements and testimonials, and the first time the rules have covered bloggers.
Shouts of "Kill him! Kill him!" ring out as the preteens train their virtual assault rifles on the last remaining terrorist and spray him with bullets. Blood splatters. The enemy collapses. And they cheerfully wrap up another game of "Counter-Strike."
Today, many people are looking to high technology sectors — like alternative energy — to be the growth engine that revives the U.S. economy and gets it back on track. They're in for a shock. During the boom years, when all seemed well, capabilities that underpin innovation in a wide range of products were continuing to deteriorate.
University of Michigan physicists have created the first atomic-scale maps of quantum dots, a major step toward the goal of producing "designer dots" that can be tailored for specific applications.
A new internet game is about to be launched which allows 'super snooper' players to plug into the nation's CCTV cameras and report on members of the public committing crimes.
North America's professional sports leagues are all a twitter over tweeting and have pushed through guidelines to ban player access to social networking sites during games. Following the lead of the NFL and NBA, the NHL said it
Provided in an IP67-rated 33.0 x 10.4 x 15.9-mm package, the Burgess V3NS microswitch from Johnson Electric can deliver a minimum of 200,000 operations at 6 A and 250 VAC.
I want to take a look at PID loops and how they are typically handled in software. I'm going to contrast how the motor control folks do things vs. how the chemical industry folks do things. Now there are all kinds of things you can control with such a loop (in a motor control context).
Electronic readers could be the hottest gift this holiday season as a new crop of portable media devices begins to join iPods and other music players as must-have tech accessories. The number of readers bought will be