Fundo: para yili na nkhongono, coil ya electromagnetic yikupanga nkhongono ya magesi kuti yinyamure chigaŵa chakumalizgirapo kufuma pa mpando wa vavu, ndipo vavu yikujulika; Nkhongono, nkhongono ya electromagnetic yikusoŵa, nyengo ya vula kuti yijalirepo nkhongono pa mpando, vavu yajalika. Vinthu: Mu vacucuum, kufinyikizgika kwakuheni, zero kupanikizika kungagwira ntchito mwachizoloŵezi, kweni msinkhu kanandi ukujumpha 25mm yayi.
