Achieving higher torque is a never-ending goal for motor engineers. Pacific Scientific, for example, introduced a high torque step motor earlier this year. And Oriental Motor just announced a new hybrid step motor that has higher torque for a given package. So industry consultant Dan Jones, VP at Motion Media Group (Thousand Oaks, CA) may not have exactly been going out on a limb when he told us that motor torque density will nearly double over the next ten years. He attributes the improvement to new developments in magnets and optimization of motor designs. Magnets improve about 5% each year due to better materials, he says, noting the University of Delaware's research on nano-composites (combinations of soft iron, rare earth elements, and composites). Engineers also are employing finite element analysis to improve pole shaping and exploit more of the effective force of the magnet, and increasing the amount of copper in the windings. Five years ago, the typical motor had less than 60% slot fill—today that number is in excess of 70% and going up. Earlier this year, for example, Anorad introduced a line of LC linear motors. One of the main selling points: Higher copper fill in the windings. Engineers are also looking to reduce the size of the non-working parts of the motor, which depending on the profile of the motor can take up 50% of the package's real estate.
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 first photos made with a 3D-printed telescope are here and they're not as fuzzy as you might expect. A team from the University of Sheffield beat NASA to the goal. The photos of the Moon were made with a reflecting telescope that cost the research team £100 to make (about $161 US).
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.
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.