Brush can be used in dc motor or ac motor commutator

brush slip ring can be used in dc motor or ac motor commutator, such as general electric tools, such as hand electric drill and Angle of grinding machine, use it. He is used to and cooperate to achieve motor current commutation commutator,
Brush (except squirrel-cage motor) is the motor conduction current sliding contact. In dc motor, it also shoulders the induction in the armature winding alternating emf, the reversing (rectifier) task. The practice proved: the reliability of the motor running, to a large extent depends on the performance of the brush.
According to the transmission medium to distinguish, slip ring was divided into smooth electrical slip ring, fluid slip ring, ring, can also be popular are collectively referred to as "rotating connected" or "spin". Slip rings are usually installed in the device's center of rotation, is mainly composed of rotating and stationary of two parts. Rotating part of the rotation of the connection structure and then rotating movement, known as the "rotor", still partially connected devices fixed structure of energy, called "stator".
collector rings, also commonly referred to as the convergence of carbon brush and slip ring, collecting ring, ring, spin, rotation electric joint mechanical equipment 360 ° of continuous rotation at the same time, also need multiple motion on the body of revolution. Is exercise, you need energy, such as electric energy, fluid pressure energy. Sometimes, also need to control signal source, such as optical signal and high frequency signal. Any relatively continuous rotation between 360 ° electrical components need transfer function power, weak current signal, optical signal, different energy medium such as air pressure, hydraulic pressure, oil pressure, to ensure that the electrical appliances in the rotary motion as well as free movement of the mechanical and electrical equipment, must use rotating connected device.