What Does Carbon Brush Mean?

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Carbon brush, also known as an electric brush, is a type of sliding contactor widely used in many electrical devices. It serves as a device that transfers energy or signals between the stationary and rotating parts of motors, generators, or other rotating machinery. Typically made of pure carbon with a solidifying agent, it is usually shaped like a square block, clamped onto a metal bracket, with a spring inside pressing it tightly against the rotating shaft. 1. Composition: The main component of a carbon brush is carbon. During operation, it works on the rotating part under spring pressure, functioning like a brush, hence the name 'carbon brush.' The primary material is graphite. 2. Function: Carbon brushes play a crucial role in DC motors. They conduct current between the moving parts of the motor, a process known as sliding conduction, which transfers current from the stationary part to the rotating part of the generator or motor. Several carbon brushes form a carbon frame, and this conduction method leads to easy wear of the carbon brushes. Additionally, carbon brushes have the function of changing the direction of current, known as commutation.