Umsebenzi we-Thermistor

1. I-Thermistor iyi-resistor eyenziwe ngezinto ezikhethekile, futhi inani layo lokumelana lishintsha ngokushisa. Ngokusho kwe-coefficient ehlukene yokuguqulwa kokumelana, ama-thermistors ahlukaniswe izigaba ezimbili:

Olunye uhlobo lubizwa ngokuthi i-positive temperature coefficient thermistor (PTC), inani layo lokumelana likhuphuka ngezinga lokushisa;

Olunye uhlobo lubizwa ngokuthi I-Negative Temperature Coefficient Thermistor (NTC), inani layo lokumelana lehla ngokunyuka kwezinga lokushisa.

2. Isimiso sokusebenza se-thermistor

1) I-Positive Temperature Coefficient thermistor (PTC)

I-PTC ngokuvamile yenziwe nge-barium titanate njengento eyinhloko, futhi inani elincane lezinto zomhlaba ezingavamile zengezwa ku-barium titanate, futhi lenziwa ukushisa okuphezulu kwe-sintering. I-Barium titanate iyi-polycrystalline material. Kukhona ukuxhumana kwezinhlayiyana zekristalu phakathi kwekristalu yangaphakathi nekristalu. Uma izinga lokushisa liphansi, ama-electron e-conductive angawela kalula isikhombimsebenzisi sezinhlayiyana ngenxa yensimu yangaphakathi kagesi. Ngalesi sikhathi, inani layo lokumelana Lizoba lincane. Lapho izinga lokushisa likhuphuka, inkambu kagesi yangaphakathi izobhujiswa, kunzima ukuthi ama-electron conductive awele isixhumi esibonakalayo sezinhlayiyana, futhi inani lokumelana lizokhuphuka ngalesi sikhathi.

2) I-thermistor ye-temperature enegative (NTC)

I-NTC ngokuvamile yenziwe ngezinto zensimbi ze-oxide ezifana ne-cobalt oxide ne-nickel oxide. Lolu hlobo lwe-oxide yensimbi lunama-electron ambalwa nezimbobo, futhi inani layo lokumelana lizoba phezulu. Lapho izinga lokushisa likhuphuka, inani lama-electron nezimbobo ngaphakathi lizokhula futhi inani lokumelana lizokwehla.

3. Izinzuzo ze-thermistor

Ukuzwela okuphezulu, i-coefficient yokushisa ye-thermistor inkulu izikhathi ezingaphezu kuka-10-100 kunezensimbi, futhi ikwazi ukubona izinguquko zokushisa kwe-10-6 ℃; ububanzi bokushisa obusebenzayo, amadivaysi okushisa ajwayelekile afanele -55 ℃ ~ 315 ℃, amadivaysi okushisa aphezulu afanele izinga lokushisa Ngaphezu kuka-315 ℃ (okwamanje eliphakeme kakhulu lingafinyelela ku-2000 ℃), idivayisi esezingeni eliphansi ifanele -273 ℃ ~ -55 ℃; incane ngosayizi futhi ingakala izinga lokushisa lesikhala amanye ama-thermometer angakwazi ukusikala

4. Ukusetshenziswa kwe-thermistor

Ukusetshenziswa okuyinhloko kwe-thermistor kufana nesici sokuthola izinga lokushisa, futhi ukutholwa kwezinga lokushisa ngokuvamile kusebenzisa i-thermistor ene-coefficient yezinga lokushisa elingalungile, okungukuthi, i-NTC. Isibonelo, izinto zikagesi ezisetshenziswa kakhulu zasendlini, njengezipheki zelayisi, izipheki zokungeniswa, njll., zonke zisebenzisa ama-thermistors.