However, since the 1970s electronic control of motor speed has become a common feature on the more expensive models.

Think about issues such as switching off, loading appropriately and reducing motor speed.

Resistors allow control of the motor speed, although significant power is dissipated in the external resistance.

One practical application is to use this phenomenon to indirectly measure motor speed and position.

He worked at levers; the motor speed increased, as indicated by a dial.

Choose a model with 15- to 17-disk diameter and a motor speed of 200 revolutions per minute or less.

One rule might be "If the air is cool, then set the motor speed to slow."

Another might be "If the air is warm, then set the motor speed to high."

In the basic system described here the switching angle effective for one stem depends on the average motor speed over the previous step.

Instead of using the controller, two leads were touched together in the hope that the motor speed was set correctly.