I-thermistor, ingxenye ye-semiconductor, ibonakala ngokuzwela okwedlulele kokuvunyelwa kokushisa kwezindlela zokushisa.Kuhlukaniswe ngezinhlobo ezimbili ngokususelwa ku-coeffrent yokushisa: I-thermistor enhle yokushisa (PTC) kanye ne-thermistor engemihle yokushisa (NTC).I-NTC Thermistor, eyaziwa ngokulinganisa kwayo kokushisa, ukulawula, kanye namakhono okunxephezela, ibonwa kabanzi njengenzwa yokushisa.Ngakolunye uhlangothi, i-PTC Thermistor, ngenkathi isetshenziselwa ukukala izinga lokushisa nokulawula, okuphindwe kabili njengento yokushisa nemisebenzi njenge "switch".Ifaka izindima zento ebucayi, i-heater, kanye nokushintsha, inikela ngomMoniiker "switch eshisayo".
Ukungena e-Thermistor ye-NTC, kuchazwa nge-coeffleefrent yayo engemihle yokushisa, okusho ukuthi ukumelana kwayo kunciphisa kakhulu njengoba izinga lokushisa likhuphuka.Lesi sici senza izakhi ze-NTC zidunyiswe izindlela zokuqala ezithambile, kanye nokutholwa okuzenzakalelayo nokulawula imibuthano emishini emincane yasendlini.Ngakolunye uhlangothi, i-PTC Thermistor ikhombisa i-coeffic yokushisa elungisiwe, lapho ukumelana khona kukhuphuka ngamazinga okushisa, yingakho ukusetshenziswa kwayo njalo emibuthanweni yokulawula okuzenzakalelayo.
I-NTC Thermistor iyi-semiconductor ye-ceramic, i-crystal ebucayi evuthayo yenkondlo kusuka ekuhlanganiseni kwama-oxides wensimbi, ikakhulukazi manganel, uCobalt, noNickel.Inani layo lokumelana namandla e-zero lihlobana amazinga okushisa okuqala kwengxenye.Empeleni, i-thermistor ingukumelana nomqondo wokuqina kokushisa, ukuguqula ukumelana kwayo ekuphenduleni izinguquko zokushisa kwingxenye uqobo.
Ukugxila ku-thermistor engemihle yokushisa e-coeffienty (NTC), i-zero crossior yayo yokumelana (i-RT) endaweni yokushisa ethile (T) ichazwa njengenani lokumelana ngaphansi kwe-DC yamanje lapho ukusetshenziswa kwamandla lapho ukusetshenziswa kwamandla khona lapho ukusetshenziswa kwamandla khona kwamanje lapho ukusetshenziswa kwamandla khona kwamandla lapho ukusetshenziswa kwamandla khona lapho ukusetshenziswa kwamandla khona kwamandla lapho ukusetshenziswa kwamandla khona lapho kusetshenziswa khona amandla.Uma amandla ancishiswe futhi, izinga lokushintshwa ngokumelana lihlala lingaphansi kwe-0.1%.I-Material ihlala njalo (b), enye ipharamitha esemqoka, ibalwa kusetshenziswa ifomula esekelwe emazingeni okushisa amabili akhona (kusetshenziswa amazinga okushisa aphelele k): b = l1 / r2 / t2).Ngokuvamile kunqunywe ku-T1 = 298.155 ne-T2 = 323.15k noma 358.155, amanani we-B asukela ngo-2000 kuya ku-6000k.Okukhudlwana inani le-B, kukhuphuka izinga lokushintshwa kwendlela yokuvuselelwa ngo-1 ° C.
I-coefficial coefficial (Δ) imele amandla adingekayo yi-NTC Thermistor ukukhulisa izinga lokushisa layo ngo-1 ° C ngokuzikhandla, okuvame ukuvezwa ku-MW / ° C.Kubalwa ngu-Δ = v × i / (t-t0).Okokugcina, isikhathi esishisayo njalo (i-ven) isikhathi esidingekayo ku-thermistor ukuthi sishintshele amazinga okushisa angama-63.2% womehluko phakathi kokushisa kwe-T0 nokushisa T1 ngaphansi kwemizuzwana (kulinganiswa ngemizuzwana.