Site na AC ruo DC, site na ike ugboro ruo ugboro etiti, wee gaa na teknụzụ ikike ikike (DC bus system solution) etinyere na nnukwu mmepụta nke ụlọ ọrụ sapphire.A na-eji ngwaahịa ndị a na usoro uto sapphire dị iche iche dị ka usoro ụfụfụ, usoro mgbanwe okpomọkụ na usoro eduzi.Injet na-ewetara ndị ahịa uru na ịsọ mpi site na ntinye ọhụụ na-aga n'ihu, ọ ga-aga n'ihu na-enye aka na mmepe nke ụlọ ọrụ ahụ.