ELECTRONICS: Only months after the launch of the new 4-W Class, RECOM introduces the RAC20-SB, a highly efficient solution in the medium power range of up to 20-W.This ultra-compact converter measures only 52.4 x 27.2 x 23.5 mm (LxWxH), and is supplied in the same housing as the popular 10-W model and is also pin-compatible with the equally popular 5-W model.
The converters are designed for use on universal mains with input voltages of 90 to 264V ac and are available with output voltages of 3.3, 5.0, 12, 15 and 24V. All the models attain an unusually low no load consumption of under 500 mW. These not only meet the EU’s “green power” policies for 2010, but also those planned for 2013.
Compared to its predecessor, the power density of the module has been increased by 120 percent to 0.6 W/cm3. Efficiency varies according to output voltage limits, reaching a peak of 86 percent at 24V. In free air convection, the ambient temperature operating range of the converters is between -40 to 70C. The RAC20-SB family is also fitted with an integrated “Class B” filter. All models are isolated to 3000V dc minimum and exhibit a MTBF of 250,000 hours to MIL-HDBK-217F specifications.
In this new Design News feature, "How it Works," we’re starting off by examining the inner workings of the electronic cigarette. While e-cigarettes seemed like a gimmick just two or three years ago, they’re catching fire -- so to speak. Sales topped $1 billion last year and are set to hit $10 billion by 2017. Cigarette companies are fighting back by buying up e-cigarette manufacturers.
Advertised as the "Most Powerful Tablet Under $100," the Kindle Fire HD 6 was too tempting for the team at iFixit to pass up. Join us to find out if inexpensive means cheap, irreparable, or just down right economical. It's teardown time!
The increased adoption of wireless technology for mission-critical applications has revved up the global market for dynamic electronic general purpose (GP) test equipment. As the link between cloud networks and devices -- smartphones, tablets, and notebooks -- results in more complex devices under test, the demand for radio frequency test equipment is starting to intensify.
Much of the research on lithium-ion batteries is focused on how to make the batteries charge more quickly and last longer than they currently do, work that would significantly improve the experience of mobile device users, as well EV and hybrid car drivers. Researchers in Singapore have come up with what seems like the best solution so far -- a battery that can recharge itself in mere minutes and has a potential lifespan of 20 years.
Some humanoid walking robots are also good at running, balancing, and coordinated movements in group settings. Several of our sports robots have won regional or worldwide acclaim in the RoboCup soccer World Cup, or FIRST Robotics competitions. Others include the world's first hockey-playing robot and a trash-talking Scrabble player.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.