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
Amakhondaktha ashisayo noma amakhondaktha afudumele ayizinqamuleli zikagesi ezinama-coefficients okushisa angemuhle (i-NTC ngamafuphi). Uma okwamanje kugeleza 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, nickel, i-cobalt, insimbi, ithusi noma i-titanium. Izinto ezisetshenziswayo zixubene nama-agent abophayo, zicindezelwe futhi zifakwe i-sintered. 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 ukubekezelela ngamaphesenti 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 olufunekayo. 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-NTC resistor 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.