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Fluid control and metering can often be more precisely handled by using stepper motors.

The fundamentals of motor design have changed little over the course of time, but the technologies used to improve tolerances, and implement new assembly techniques, materials, and stator and rotor geometries are constantly evolving.

In two issues early in the year, we publish a list of dollar values collected throughout the previous year. It is up to you to discover whatever amazement,humor, or irony they evoke.

The
LEM-S-1 Short Series is an epoxy core, brushless motor with an overall length
of 67 mm producing 25 lb of peak force.

A well-behaved motion system depends on motor parameters derived from lab tests. When critical ratings are suspect, run the tests and measure the results yourself.

During the space race and defense buildup beginning in the 1950s, the demand for electrical engineers picked up dramatically, and their salaries began to grow beyond those of other engineering disciplines. But forces change in our economy. By 1970

The editorial in our May 22 issue consisted of a commencement address cast in a whimsical framework. I claimed to have written the address so I would have one handy in case a college asked me to speak at a graduation ceremony. The premise was a bl

Designers often simply assume that 90?angles between the front wheel spindles andthe steering levers provide proper steering.

Designers often simply assume that 90° angles between the front wheel spindles and the steering levers provide proper steering.

Reeves Callaway has a long history of tinkering and modifying motorized vehicles, trying to wring the most performance and driving excitement from them.

Rocker
Pinch Valves from Z-Man Corp.

Precision Speed Control (PSC) shock absorbers from Enidine Inc., Orchard Park, N.Y., work for specialized industrial machinery applications requiring controlled movements.

Tiny 0.

New
A-Series manifold valves from Parker Pneumatics, Richland, Mich.

Numatics,
Highland, Mich.