Iyo mota tsvina inopisa yemota dzemagetsi dzakachena haigone kusangana nezvinodiwa zvekudziya kwechando, saka kupisa kwechando idambudziko iro mota dzemagetsi dzakachena dzinoda kugadzirisa.Positive tembiricha coefficient heaters (positive tembiricha coefficient, PTC) inoumbwa nePTC ceramic inodziya zvinhu uye machubhu ealuminium, ane zvakanakira kushoma kupisa kwekupisa uye kupisa kwakanyanya kwekupisa, uye haagadziriswe pahwaro hwemotokari dzemafuta.