Brush
The brushed DC electric motor generates torque directly from DC power supplied to the motor by using internal commutation, stationary magnets (permanent or electromagnets), and rotating electrical magnets.
Like all electric motors or generators, torque is produced by the principle of Lorentz force, which states that any current-carrying conductor placed within an external magnetic field experiences a torque or force known as Lorentz force. 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 brushes and springs which carry the electric current, as well as cleaning or replacing the commutator. These components are necessary for transferring electrical power from outside the motor to the spinning wire windings of the rotor inside the motor.
Read more about this topic: DC Motor
Famous quotes containing the word brush:
“If you pick up some paint with your brush and make somebody’s nose with it, this is rather ridiculous when you think of it, theoretically or philosophically. It’s really absurd to make an image, like a human image, with paint, today.”
—Willem De Kooning (b. 1904)
“If you were coming in the Fall,
I’d brush the Summer by”
—Emily Dickinson (1830–1886)
“and a man climbing
must scrape his knees, and bring
the grip of his hands into play. The cut stone
consoles his groping feet. Wings brush past him.
The poem ascends.”
—Denise Levertov (b. 1923)