Kev tiv thaiv overvoltage nrog cov khoom sib cais nrog cov varistors hauv qhov tsim qauv kawg
Cov hlau-oxide varistors siv tau rau hauv kev tsim qauv kawg. Lawv tau pom zoo rau qhov siab tshaj plaws sine-wave-form fais fab zaus ua haujlwm voltage, uas tau luam tawm rau ntawm cov khoom. Txhua qhov voltages loj dua qhov tso cai siab tshaj plaws-
cov mum raug tso tawm kom muaj kev nyab xeeb hauv 25 ns. Cov varistors siv rau lub zog nruab nrab mus rau siab.