In addition to old radios, the dynamotor or motor generator also found use in elevators (because of the need for high-current DC), and trains (DC voltage conversion). Also, if you absolutely need ...

Recent research from Portescap found that brushed DC motors best fulfill the demanding requirements of humanoid robots.

The speed of a brushed DC motor can be controlled by changing the voltage ... constant is evident from the above equation. For a given torque, a high value of k limits the current to a low value. This ...

DC powered pumps use direct current from motor, battery, or solar power to move fluid in a variety of ways. Motorized pumps typically operate on 6, 12, 24, or 32 volts of DC power. Solar-powered DC ...