What is brush contact drop?

Brush contact drop refers to the voltage drop that occurs across the brushes and commutator in a DC motor or generator due to resistance and contact imperfections. This drop can lead to inefficiencies in the performance of the machine, affecting its overall output and stability. It is an important factor to consider when evaluating the electrical characteristics and operational efficiency of such devices. Reducing brush contact drop can enhance performance and extend the lifespan of the equipment.