Iyini inzwa yezinga lokushisa ye-NTC?

Iyini inzwa yezinga lokushisa ye-NTC?

Ukuze siqonde umsebenzi nokusetshenziswa kwenzwa yezinga lokushisa le-NTC, kufanele siqale sazi ukuthi iyini i-NTC thermistor.
Indlela inzwa yokushisa ye-NTC esebenza ngayo ichazwe kalula
Amakhondakta ashisayo noma amakhondaktha afudumele ayizinqamuleli ze-elekthronikhi ezinama-coefficients okushisa angemuhle (i-NTC ngamafuphi).Uma i-current igeleza ezingxenyeni, ukumelana kwabo kunciphisa ngokunyuka kwamazinga okushisa.Uma izinga lokushisa lehla (isb. kumkhono wokucwiliswa), izingxenye, ngakolunye uhlangothi, zisabela ngokwanda kokumelana.Ngenxa yalokhu kuziphatha okukhethekile, ochwepheshe baphinde babhekisele kusiphikisa se-NTC njenge-NTC Thermistor.

Ukumelana nogesi kuncipha lapho ama-electron ehamba
Izinqamuleli ze-NTC ziqukethe izinto ezisetshenziswa yisemiconductor, ukuqhutshwa kwayo ngokuvamile okuba phakathi kwalokho kwamakhondatha kagesi nama-non-conductor kagesi.Uma izingxenye zishisa, ama-electron ayakhululeka kuma-athomu e-lattice.Bashiya indawo yabo esakhiweni futhi bathuthe ugesi kangcono kakhulu.Umphumela: Ngokukhula kwezinga lokushisa, ama-thermistors aqhuba ugesi kangcono kakhulu - ukumelana kwawo kagesi kunciphisa.Izingxenye zisetshenziswa, phakathi kwezinye izinto, njengezinzwa zokushisa, kodwa kulokhu kufanele zixhunywe kumthombo we-voltage kanye ne-ammeter.

Ukukhiqiza kanye nezakhiwo zamakhondatha ashisayo nabandayo
I-NTC resistor ingasabela ngobuthaka kakhulu noma, ezindaweni ezithile, ngokuqinile kakhulu ekushintsheni kwezinga lokushisa elizungezile.Ukuziphatha okuqondile ngokuyisisekelo kuncike ekwenziweni kwezingxenye.Ngale ndlela, abakhiqizi bavumelanisa isilinganiso sokuxuba sama-oxides noma i-doping yama-oxides ensimbi ezimweni ezifunwayo.Kodwa izakhiwo zezingxenye nazo zingathonywa ngenqubo yokukhiqiza ngokwayo.Isibonelo, ngokuqukethwe komoyampilo emkhathini wokudubula noma izinga lokupholisa ngalinye lezinto.

Izinto ezihlukile ze-NTC resistor
Izinto ezihlanzekile ze-semiconductor, ama-semiconductors ayinhlanganisela noma ama-alloys ensimbi asetshenziswa ukuze kuqinisekiswe ukuthi ama-thermistors akhombisa ukuziphatha kwawo kwesici.Lesi sakamuva ngokuvamile siqukethe ama-oxide ensimbi (izinhlanganisela zezinsimbi nomoya-mpilo) we-manganese, i-nickel, i-cobalt, insimbi, ithusi noma i-titanium.Izinto ezisetshenziswayo zixubene nama-agent abophayo, zicindezelwe futhi zisindwe.Abakhiqizi bashisisa izinto zokusetshenziswa ngaphansi kwengcindezi ephezulu kangangokuthi ama-workpieces anezakhiwo ezifiselekayo zidalwe.

Izici ezijwayelekile ze-thermistor ngokubuka nje
I-resistor ye-NTC itholakala ngobubanzi obusuka ku-ohm eyodwa ukuya ku-100 megohms.Izingxenye zingasetshenziswa ukusuka ku-60 ukuya ku-200 degrees Celsius futhi zifinyelele ukubekezelelana kwamaphesenti angu-0.1 kuya kwangu-20.Uma kuziwa ekukhetheni i-thermistor, imingcele ehlukahlukene kufanele inakwe.Enye yezinto ezibaluleke kakhulu ukumelana nokulinganisa.Ibonisa inani lokumelana nezinga lokushisa elinikeziwe (ngokuvamile elingu-25 degrees Celsius) futhi imakwe ngosonhlamvukazi R kanye nezinga lokushisa.Isibonelo, u-R25 yenani lokumelana no-25 degrees Celsius.Ukuziphatha okukhethekile emazingeni okushisa ahlukene nakho kuyahambisana.Lokhu kungacaciswa ngamathebula, amafomula noma imidwebo futhi kufanele kufane ngokuphelele nohlelo olufunayo.Amanye amanani ezimpawu ze-NTC resistors ahlobene nokubekezelela kanye nemikhawulo ethile yokushisa kanye ne-voltage.

Izindawo ezihlukene zokufaka isicelo se-NTC resistor
Njenge-resistor ye-PTC, i-NTC resistor nayo ifanele ukukalwa kwezinga lokushisa.Inani lokumelana liyashintsha kuye ngezinga lokushisa elizungezile.Ukuze ungakhohlisi imiphumela, ukuzifudumeza kufanele kukhawulelwe ngangokunokwenzeka.Nokho, ukuzishisisa ngesikhathi sokugeleza kwamanje kungasetshenziswa ukukhawulela i-inrush current.Ngoba i-NTC resistor iyabanda ngemva kokushintsha izinto zikagesi, ukuze kugeleze ingcosana yamanje ekuqaleni.Ngemva kwesikhathi esithile sokusebenza, i-thermistor iyashisa, ukumelana nogesi kuyehla nokugeleza okwengeziwe kwamanje.Amadivayisi kagesi afinyelela ukusebenza kwawo okugcwele ngale ndlela ngokubambezeleka kwesikhathi esithile.

I-resistor ye-NTC yenza amandla kagesi kabi kakhulu emazingeni okushisa aphansi.Uma izinga lokushisa elizungezile likhuphuka, ukumelana nalokho okubizwa ngokuthi ama-conductor afudumele kwehla ngokuphawulekayo.Ukuziphatha okukhethekile kwama-elementi e-semiconductor kungasetshenziswa ngokuyinhloko ukulinganisa izinga lokushisa, umkhawulo wamanje we-inrush noma ukubambezeleka okuhlukahlukene.