Ugbo oku bụ ụdị nke kpo oku na-anaghị akpọtụrụ maka conductive ihe, mgbe alternating ugbu a aga na mkpịsị aka igwe, edoziri elektrọnik dị iche iche guzobere gburugburu eriri igwe, na-ekesa ugbua (na-akpata, ugbu a, eddy ugbu a) na-arụpụta na workpiece (ihe omume), a na-emepụta okpomọkụ dị ka eddy ugbu a.  na-asọ megide iwere ihe nke ihe ahụ. 
Ugbo oku bu udi nke kpo oku na-anaghi akpoturu maka conductive ihe, mgbe alternating ugbu a aga na mkpisi aka igwe, edoziri elektronik di iche iche guzobere gburugburu eriri igwe, na-ekesa ugbua (na-akpata, ugbu a, eddy ugbu a) na-aruputa na workpiece (ihe omume), a na-emeputa okpomoku di ka eddy ugbu a.  na-aso megide iwere ihe nke ihe ahu. 