DC電機的場合，碳刷和換器之間的火花引起電磁噪音，這種電磁噪 音在電線內，或向電機外輻射而影響周邊的機器，貴公司對這種電磁噪音可以采取以下對策：

In DC motor, sparks between the carbon brushes and the commentator cause electrical noise, that may affect thenormal function of the equipment through the wire or radiation. The noise can be minimized or eliminated through thesuggestions mentioned below: