Mayelana nesizathu sokushiswa kwe-varistor
Kumjikelezo, indima ye-varistor yile: okokuqala, ukuvikelwa kwe-overvoltage; okwesibili, izidingo zokumelana nombani; okwesithathu, izidingo zokuhlola ukuphepha. Khona-ke kungani i-varistor ishisa kumjikelezo? Siyini isizathu?
Ama-Varistors ngokuvamile adlala indima ekuvikelweni kwamandla kagesi kumasekhethi, futhi angasetshenziswa namafuse okushaya umbani noma okunye ukuvikela i-overvoltage. Ngokuvamile isetshenziselwa ukuvikela umbani. Uma kwenzeka i-overvoltage, i-varistor izophulwa futhi isifunda esifushane sizokwenzeka, ukuze i-voltage emikhawulweni yomibili ye-varistor izoboshelwa endaweni ephansi. Ngesikhathi esifanayo, i-overcurrent ebangelwa isifunda esifushane izoshisa i-fuse yangaphambili noma Phoqelela ukushintshwa komoya, ngaleyo ndlela kunqamule ukunikezwa kwamandla ngenkani. Ngokuvamile, inomphumela omncane kwezinye izingxenye ze-elekthronikhi ngemva kokulimala, vele uhlole izingxenye zesifunda ezixhunywe kuyo. Uma kwenzeka umonakalo wokubhoboza, i-fuse izovunguza.
Lapho i-voltage ingaphansi kwe-voltage elinganiselwe ye-varistor, ukumelana kwe-varistor akupheli futhi akunawo umphumela kumjikelezo. Lapho i-voltage kumjikelezo idlula i-varistor voltage, ukumelana kwe-varistor kuzokwehla ngokushesha, okuzodlala indima yokunciphisa i-shunt kanye ne-voltage, futhi i-fuse kumjikelezo ofanayo izoshaywa ukuze idlale indima yokuvikela. Uma kungekho fuse kumjikelezo, i-varistor izoqhuma ngokuqondile, yonakaliswe futhi ihluleke, ilahlekelwe umphumela wayo wokuvikela, futhi ibangele ukuthi isifunda esilandelayo sishise.
Izizathu ezintathu ezingenhla yizizathu ezenza i-varistor ishise kumjikelezo. Ukunakwa okukhethekile kufanele kukhokhwe ekusebenzeni esikhathini esizayo ukugwema ukulimala kwe-capacitor.
Isikhathi sokuthumela: Feb-18-2022
