Permanent-magnet stepper and gear motors range from 15- to 60-mm in diameter, provide step angles of 1.8 and 3.6 degrees (hybrids), and 3.6, 7.5, 15, and 18 degrees (permanent magnet). Both motors come in standard industry configurations for drop-in replacement. Stepper Motor Handbook includes specification sheets, a quick reference chart, and a tutorial on stepper motor technology. In addition, application notes, formulas, and terminology are included.
Thomson Industries Inc., 2 Channel Dr., Port Washington, NY 11050, FAX (516) 883- 9039
Conventional wisdom holds that MIT, Cal Tech, and Stanford are three of the country’s best undergraduate engineering schools. Unfortunately, when conventional wisdom visits the topic of best engineering schools, it too often leaves out some of the most distinguished programs that don’t happen to offer PhD-level degrees.
Airbus Defence and Space has 3D printed titanium brackets for communications satellites. The redesigned, one-piece 3D-printed brackets have better thermal resistance than conventionally manufactured parts, can be produced faster, cost 20% less, and save about 1 kg of weight per satellite.
A group of researchers at the Seoul National University have discovered a way to take material from cigarette butts and turn it into a carbon-based material that’s ideal for storing energy and creating a powerful supercapacitor.
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.