ʻO Metal Vertide Varistor / Zinc Oxide Varistor kahi laina laina pale ʻole e hoʻohana ana ma ke ʻano he semiconductor electrocnic ceramic element i haku ʻia o zinc oxide. Kapa ʻia ʻo varistor a i ʻole varistor noʻonoʻo oxide (Mov), e like me ka maʻalahi i ka loli o ka uila. ʻO ke kino o ka varistor kahi ʻano matrix i haku ʻia me nā kinikona zinc oxide. Ua like nā palena palaoa ma waena o nā huna huna i nā ʻano uila o nā PN PN bidirectional. Ke haʻahaʻa ka uila i kēia mau palena palaoa i ke kūlana impedance kiʻekiʻe a ke kiʻekiʻe ka uila aia lākou i ka mokuāhana breakdown kahi ʻano o ka laina laina ʻole.