这个是gambar skamatik。
资料来源:https://www.google.com/url?sa=i&url=http%3A%2F%2Flukisanelektrik.blogspot.com%2F2014%2F11%2Fgambarajah-skematik.html&psig=AOvVaw0-iEpBMauQugPMGbCxmT1T&ust=1614311899161000&source=images&cd=vfe&ved=0CAQQjhxqFwoTCNCzhM-ShO8CFQAAAAAdAAAAABAD
原理图 (如果有错误,请评论)