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.
Samsung's Galaxy line of smartphones used to fare quite well in the repairability department, but last year's flagship S5 model took a tumble, scoring a meh-inducing 5/10. Will the newly redesigned S6 lead us back into star-studded territory, or will we sink further into the depths of a repairability black hole?
In 2003, the world contained just over 500 million Internet-connected devices. By 2010, this figure had risen to 12.5 billion connected objects, almost six devices per individual with access to the Internet. Now, as we move into 2015, the number of connected 'things' is expected to reach 25 billion, ultimately edging toward 50 billion by the end of the decade.
NASA engineer Brian Trease studied abroad in Japan as a high school student and used to fold fast-food wrappers into cranes using origami techniques he learned in library books. Inspired by this, he began to imagine that origami could be applied to building spacecraft components, particularly solar panels that could one day send solar power from space to be used on earth.
Biomedical engineering is one of the fastest growing engineering fields; from medical devices and pharmaceuticals to more cutting-edge areas like tissue, genetic, and neural engineering, US biomedical engineers (BMEs) boast salaries nearly double the annual mean wage and have faster than average job growth.
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.