The 22BC Series of sensorless miniature brushless dc motors are 22 mm in diameter and feature slotless, three-phase windings for cogless operation, and rare-earth neodymium ring magnets for torque production.
API Portescap, 45 Hazelwood Dr., Amherst, NY 14228, FAX (610) 696-4598.
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.