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Malunga nesizathu sokutshiswa kwe-varistor

Kwisekethe, indima ye-varistor yile: okokuqala, ukukhuselwa kwe-overvoltage; okwesibini, iimfuno zokuxhathisa umbane; okwesithathu, iimfuno zovavanyo lokhuseleko. Ke kutheni i-varistor itshisa kwisekethe? Siyintoni isizathu?

I-Varistors ngokubanzi idlala indima ekukhuselweni kwamandla ombane kwiisekethe, kwaye inokusetyenziswa kunye neefuse zokubetha umbane okanye olunye ukhuseleko lombane. Ngokuqhelekileyo isetyenziselwa ukukhusela umbane. Xa i-overvoltage isenzeka, i-varistor iya kuchithwa kwaye isiphaluka esifutshane siya kwenzeka, ukwenzela ukuba i-voltage kwiziphelo zombini ze-varistor iya kunyanzeliswa kwindawo ephantsi. Kwangaxeshanye, i-overcurrent ebangelwa yi-short circuit iya kutshisa i-fuse yangaphambili okanye iNyanzelise ukutshintshelwa komoya ukuba ihambe, ngaloo ndlela inqumle umbane ngenkani. Ngokuqhelekileyo, inempembelelo encinci kwezinye izinto ze-elektroniki emva komonakalo, jonga nje amacandelo esekethe aqhagamshelwe kuyo. Kwimeko yomonakalo wokubhoboza, i-fuse iya kuvuthela.

Xa i-voltage ingaphantsi kwe-voltage elinganisiweyo ye-varistor, ukuchasana kwe-varistor akupheli kwaye akukho mpembelelo kwisiphaluka. Xa i-voltage kwisiphaluka idlula i-voltage ye-varistor, ukuchasana kwe-varistor kuya kuhla ngokukhawuleza, okuya kudlala indima ye-shunt kunye nokunciphisa i-voltage, kunye ne-fuse kwisekethe efanayo iya kubethwa ukuze idlale indima yokukhusela. Ukuba akukho fuse kwisekethe, i-varistor iya kuqhuma ngokuthe ngqo, yonakaliswe kwaye ingaphumeleli, ilahlekelwe yimpembelelo yayo yokukhusela, kwaye ibangele ukuba isiphaluka esilandelayo sitshise.
Ezi zizathu zithathu zingentla zizizathu ezenza ukuba i-varistor itshise kwisiphaluka. Ingqwalasela ekhethekileyo kufuneka ihlawulwe ekusebenzeni kwixesha elizayo ukuphepha umonakalo kwi-capacitor.