(2) The current density of a single brush is large. If multiple brushes are placed on a slip ring, if some of the brushes are not in contact with the slip ring, other brushes with better contact will generate heat due to more current sharing; or brushes and slip rings The contact area of ​​the working surface is too small, causing the contact surface resistance to be too large and generating heat. The solution is to find out the cause of the contact is not correct. (3) The amount of copper in the brush is less than the standard value. When the wrong material or material itself is unqualified due to brush manufacturing, or other types of brushes are used incorrectly, the brush is less than the calibration value (for example, 80%), then the resistance of the brush Will be greater than the calibration value, resulting in more heat and overheating. In this case, replace the brush of the qualified or original model. (4) The roughness of the working surface of the collector ring is poor, which makes the brush friction resistance larger. Projector Lamp,Projector Light Bulb,Projector Lamp Replacement,Projector Bulb Replacement Shenzhen Happybate Trading Co.,LTD , https://www.szhappybateprojectors.com
(1) The pressure on the brush is too large. Mainly because the compression spring is not adjusted or the spring force of the compression spring is too large (possibly using different sizes of compression springs).
July 06, 2023