Ifilimu yokushisisa ibhethri yamandla ingenza ibhethri lamandla lisebenze ngokujwayelekile endaweni yokushisa ephansi. Ifilimu yokushisa ibhethri yamandla iwukusetshenziswa komphumela we-electrothermal, okungukuthi, i-conductive metal material enamathiselwe ku-insulating material, bese imbozwa ngolunye ungqimba lwezinto zokuvikela phezu koqweqwe lwensimbi, ungqimba lwensimbi luboshwe ngokuqinile ngaphakathi, lwakha. ishidi elincanyana lefilimu ye-conductive.