Ntchito
Chomangiracho chimalumikizidwa pakati pa chingwe ndi pansi, nthawi zambiri mofanana ndi zida zotetezedwa.Womangayo amatha kuteteza bwino zida zoyankhulirana.Mphamvu yamagetsi ikachitika, womangayo adzachitapo kanthu ndikuteteza.Pamene chingwe choyankhulirana kapena zipangizo zikuyenda pansi pamagetsi ogwira ntchito, chomangirira sichidzagwira ntchito, ndipo chimatengedwa ngati dera lotseguka pansi.Kamodzi voteji mkulu kumachitika ndi kutchinjiriza wa zida zotetezedwa ali pangozi, womangidwa adzachitapo kanthu mwamsanga kutsogolera mkulu-voteji mafunde panopa pansi, potero kuchepetsa matalikidwe voteji ndi kuteteza kutchinjiriza zingwe kulankhulana ndi zipangizo.Pamene overvoltage ikutha, womangidwayo amabwerera mwamsanga kumalo ake oyambirira, kotero kuti mzere wolankhulana ukhoza kugwira ntchito bwino.
Choncho, ntchito yaikulu ya womangayo ndi kudula akuwukira otaya yoweyula ndi kuchepetsa overvoltage mtengo wa zida zotetezedwa mwa ntchito ya parallel kutulutsa kusiyana kapena resistor nonlinear, potero kuteteza mzere kulankhulana ndi zipangizo.
Zomanga mphezi zitha kugwiritsidwa ntchito osati kungoteteza kumagetsi okwera kwambiri opangidwa ndi mphezi, komanso kuteteza motsutsana ndi ma voltages apamwamba.