Self limiting / self regulating cua sov daim kab xev kho cov cua sov tso zis kom sib npaug ntawm cov cua sov los ntawm cov yeeb nkab ua haujlwm.Raws li cov yeeb nkab kub poob qhov hluav taws xob conductivity ntawm cov tub ntxhais semi-conductive nce ua rau daim kab xev kom cov cua sov tso tawm.
