Researchers at the Georgia Institute of Technology have developed a new type of magnetically-actuated microrelay they say can be batch-produced using established micromachining techniques. The developer predicts that the devices could have applications in automotive electronics, test equipment, and other areas where low actuation voltages are needed. The devices, smaller than a dime, operate at less than 5V, which would allow them to be driven by digital logic circuits, making them attractive for use in equipment for which higher voltages could be undesirable. The patent-pending devices' contact resistance of less than 100 milliohms and their ability to switch currents of up to 1.2A set a new record for microrelays, says William P. Taylor, their developer. He adds that the devices offer cost advantages over traditional relays, "because they can be produced in groups of a hundred or more at a time." The Georgia Tech microrelays have been tested through more than 850,000 operating cycles without failure. E-mail firstname.lastname@example.org.
The promise of the Internet of Things (IoT) is that devices, gadgets, and appliances we use every day will be able to communicate with one another. This potential is not limited to household items or smartphones, but also things we find in our yard and garden, as evidenced by a recent challenge from the element14 design community.
If you didn't realize that PowerPoint presentations are inherently hilarious, you have to see Don McMillan take one apart. McMillan -- aka the Technically Funny Comic -- worked for 10 years as an engineer before he switched to stand-up comedy.
The first Tacoma Narrows Bridge was a Washington State suspension bridge that opened in 1940 and spanned the Tacoma Narrows strait of Puget Sound between Tacoma and the Kitsap Peninsula. It opened to traffic on July 1, 1940, and dramatically collapsed into Puget Sound on November 7, just four months after it opened.
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.