Hluav taws xob ntes yog ib qho kev tiv thaiv overvoltage, feem ntau yog siv los tiv thaiv ntau yam khoom siv hluav taws xob (transformers, keyboards, capacitors, yoj ntes, transformers, generators, motors, fais fab cables, thiab lwm yam) nyob rau hauv lub hwj chim systems, railway electrification systems, thiab kev sib txuas lus systems. ) muaj kev tiv thaiv los ntawm atmospheric overvoltage, kev khiav hauj lwm overvoltage thiab lub hwj chim zaus transient overvoltage, thiab lwm yam, uas yog lub hauv paus rau lub rwb thaiv tsev kev sib koom tes ntawm lub hwj chim system.
Cov ntsiab lus tseem ceeb (resistor) ntawm cov hlau oxide ntes tau txais cov qauv qib siab raws li zinc oxide thiab muaj cov yam ntxwv tsis zoo (volt-ampere). Ntawd yog, nyob rau hauv ib txwm ua haujlwm voltage, tam sim no dhau los tsuas yog micro. Qib Ampere, thaum ntsib overvoltage, qhov tam sim no dhau mus txog ntau txhiab amperes, ua rau tus neeg ntes tau nyob rau hauv lub xeev kev coj ua thiab tso tawm lub zog dhau, yog li txo qhov kev puas tsuaj ntawm overvoltage rau lub zog xa mus thiab cov cuab yeej hloov pauv.
Cov tsoos silicon carbide ntes tau muaj qhov tsis zoo xws li qhov siab siab nthwv dej tawm hluav taws xob tshwm sim los ntawm cov nthwv dej ntws tawm qeeb thiab kev ua haujlwm siab nthwv dej tawm hluav taws xob los ntawm kev ua haujlwm loj yoj tawm tawm. Zinc oxide ntes tau muaj cov yam ntxwv zoo yoj yoj teb, tsis muaj ncua sij hawm rau cov yoj yoj voltage, tsis tshua muaj kev khiav hauj lwm qhov hluav taws xob, thiab tsis muaj paug tawm. Kev tiv thaiv npoo nyob rau hauv cov nthwv dej ntxhab thiab kev ua haujlwm tsis zoo tau txhim kho zoo heev, thiab hais txog kev sib koom ua ke ntawm rwb thaiv tsev, kev tiv thaiv npoo rau cov nthwv dej ntxhab, xob laim thiab kev ua haujlwm tsis muaj zog tuaj yeem ua tau zoo ib yam, yog li muab kev tiv thaiv zoo tshaj plaws rau cov khoom siv fais fab.
Cov khoom sib xyaw ua ke ntawm cov hlau oxide ntes tau txais kev txhaj tshuaj molding thiab ob-kawg encapsulation tshuab. Nws muaj qhov zoo sealing kev ua tau zoo thiab zoo heev tawg-pov thawj kev ua tau zoo. Nws yog resistant rau av thiab yuav tsum tsis txhob tu thiab yuav txo tau qhov tshwm sim ntawm ntub flash nyob rau hauv pos huab huab cua. Nws yog resistant rau hluav taws xob corrosion thiab laus. Nws yog qhov me me thiab ruaj khov hauv qhov hnyav. , yooj yim rau nruab thiab tswj. Nws yog ib qho khoom tshiab ntawm lub tes tsho porcelain ntes.