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A DC motor is an electrical motor that uses direct current (DC) to produce mechanical force. The most common types rely on magnetic forces produced by currents in the coils. Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic, to periodically change the direction of current in part of the motor.
A brushless DC electric motor (BLDC), also known as an electronically commutated motor, is a synchronous motor using a direct current (DC) electric power supply. It uses an electronic controller to switch DC currents to the motor windings producing magnetic fields that effectively rotate in space and which the permanent magnet rotor follows.
Hampstead is a town in Rockingham County, New Hampshire, United States. The population was 8,998 at the 2020 census . [ 2 ] Hampstead, which includes the village of East Hampstead , is home to a portion of the Rockingham Recreational Trail.
A brushed DC electric motor is an internally commutated electric motor designed to be run from a direct current power source and utilizing an electric brush for contact. Brushed motors were the first commercially important application of electric power to driving mechanical energy, and DC distribution systems were used for more than 100 years ...
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The locomotives weighed 102 tons and were 37 ft 6½in long. They had to operate over the 12 miles of New York Central track electrified at 660 V DC third rail from Grand Central to Woodlawn, so had AC/DC series commutator motors; the four Westinghouse 130 motors had a total hourly rating of 1,420 hp (1,060 kW).
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In the USSR, per GOST 2582-72 with class N insulation, the maximum temperatures allowed for DC motors were 160 °C for the armature, 180 °C for the stator, and 105 °C for the collector. [13] The one-hour rating is typically about 10% higher than the continuous rating and is limited by the temperature rise in the motor.
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