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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 ...
Advantages of a brushed DC motor include low initial cost, high reliability, and simple control of motor speed. Disadvantages are high maintenance and low life-span for high intensity uses. Maintenance involves regularly replacing the carbon brushes and springs which carry the electric current, as well as cleaning or replacing the commutator .
For certain types of electric motors or generators to function, the coils of the rotor must be connected to complete an electrical circuit. Originally this was accomplished by affixing a copper or brass commutator or 'slip ring' to the shaft, with springs pressing braided copper wire 'brushes' onto the slip rings or commutator which conduct the current.
The motor constant is winding independent (as long as the same conductive material is used for wires); e.g., winding a motor with 6 turns with 2 parallel wires instead of 12 turns single wire will double the velocity constant, , but remains unchanged.
9 L (550 cu in) Direct Injection 1966-1988 IDI (International/Ford) V8 420 cubic inches (6.9 L) 444 cubic inches (7.3 L) Indirect injection: 1983-1987 (6.9L)
The D16C engine was available in two power outputs configurations 550 hp (410 kW) and 610 hp (450 kW) and it was a completely new design similar in the lines of D9 engine introduced a couple of years earlier for FM series. The notable design changes included timing gears being on the flywheel side of the engine (rear-mounted), a design which ...
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