Hiki i ke kiʻi hoʻomehana pāhana mana ke hana maʻamau i ka hana maʻamau i ke kaiapuni haʻahaʻa haʻahaʻa. ʻO ke kiʻi ʻoniʻoni hoʻomehana uila ka hoʻohana ʻana i ka hopena electrothermal, ʻo ia hoʻi, ka mea metala conductive i hoʻopili ʻia i ka mea insulating, a laila uhi ʻia me kahi papa o ka insulating mea ma luna o ka ʻili o ka ʻāpana metala, ua paʻa paʻa ka ʻāpana metala i loko, e hana ana. he pepa lahilahi o ke kii conductive.