I know a brushed motor is mechanical and brushless is electric. Brushless is more efficient and creates less heat. But how does each work and why is there an advantage of one over the other?
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A motor has to have a changing magnetic field to achieve rotation. A brushed motor has a carbon block that rides on a bunch of little copper contacts acting as switches to constantly switch power to the proper coil of wire to change the magnetic field in the windings and spin the motor.
A brushless motor is electrically or electronically switched so that the magnetic field can be changed without any mechanical “switch”.
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