Dc motor controller is widely used, according to the special needs of different users in different industries can be designed to have a brush with two kinds of brushless. Below small make up to say about how to distinguish between brush and brushless. 1. Appearance: often use dc motor controller, only the appearance is identify the brush and brushless; And unfamiliar people by looking at its surface to distinguish, generally brushless dc motor controller was flat, with the length of the brushless dc motor controller is larger than the diameter. 2. Organization: if not distinguish from the appearance, can be used to check from the institutions on the equipment and the motor controller apart look have the carbon brush is easy to distinguish. Above is about a brush in dc motor controller with brushless difference, you know.