What is Varistor

[@jilvirpaeste8258]

Thanks... Well explained with a good example. This is excellent explanation. ❤

[@passiontechmmr7748]

thank you brother

[@marvinhenry1027]

Best explanation I've seen so far

[@passiontechmmr7748]

Thank you so much

[@kirkberryleo3307]

Sir, you are my new Hero. Im a novice in electronics and its my reg pwr supply Im trying to repair. My multi mtr showed nothing..my Esr mtr showed nothing and my component tester nothing.

[@seremaiarabaraba296]

well explained... good job 👍

[@passiontechmmr7748]

Thank you 🙂

[@mrtechie6810]

For 220-240VAC --
Should I use a 431 or 471 volt MOV?
What would be the difference in leakage current at 240VAC?

[@passiontechmmr7748]

you can use either 431 or 471 for 240vac but for more safety 431 is more recomend to use which will protect more safe for your circut board.

[@arkapadma]

@@passiontechmmr7748 what about 20D391K vs 20D471K?

[@passiontechmmr7748]

@@arkapadma 20D391 is more protective than 20D471 if you are using in 230vac circut board.

[@arkapadma]

@@passiontechmmr7748 thanks a lot.

[@safasdaasdasgfafs]

Is it still safe if we connect the varistor to L and N without fuse?

[@passiontechmmr7748]

No safe, fuse is necessary calculated by load Amp since varistor is for surge protection so it must be both use .