Thermistor muaj xws li qhov kub thiab txias coefficient (PTC) thiab tsis zoo kub coefficient (NTC) thermistors, thiab tseem ceeb kub thermistors (CTRS).
1.PTC Thermistor
Qhov Zoo Kub Kub CoefiCient (PTC) yog qhov tshwm sim ntawm cov thermistor lossis cov khoom siv uas muaj qhov kub thiab txias coefficient thiab ua kom muaj zog ntxiv ntawm qhov kub thiab txias. Nws tuaj yeem siv los ua qhov ntsuas kub tsis tu ncua. Cov khoom siv yog lub cev sintered nrog BaTiO3, SrTiO3 lossis PbTiO3 ua cov khoom tseem ceeb, thiab tseem ntxiv cov oxides ntawm Mn, Fe, Cu thiab Cr uas ua rau kom muaj qhov zoo ntawm qhov kub thiab txias coefficient thiab lwm yam khoom ntxiv uas ua rau lwm lub luag haujlwm. Cov khoom siv yog tsim los ntawm cov txheej txheem ceramic thiab sintered ntawm qhov kub thiab txias los ua platinum titanate thiab nws cov khoom siv tshuaj semi-conductive. Yog li cov ntaub ntawv thermistor nrog cov yam ntxwv zoo tau txais. Qhov kub coefficient thiab Curie point kub sib txawv nrog cov muaj pes tsawg leeg thiab sintering tej yam kev mob (tshwj xeeb tshaj yog qhov txias txias).
PTC thermistor tau tshwm sim nyob rau hauv lub xyoo pua 20th, PTC thermistor tuaj yeem siv rau kev ntsuas kub thiab tswj hauv kev lag luam, kuj siv rau kev ntsuas kub thiab kev tswj ntawm ib feem ntawm lub tsheb, tab sis kuj muaj ntau cov khoom siv hauv pej xeem, xws li kev tswj xyuas qhov kub thiab txias. instant dej rhaub dej kub, cua txias thiab txias cia kub, kev siv ntawm nws tus kheej cua sov rau roj tsom xam thiab anemometer thiab lwm yam.
PCT thermistor muaj lub luag haujlwm ntawm kev ua kom qhov kub thiab txias hauv qhov tshwj xeeb, thiab tseem ua lub luag haujlwm ntawm kev hloov pauv. Siv cov yam ntxwv ntawm qhov ntsuas kub no ua qhov cua sov, nws tuaj yeem ua lub luag haujlwm ntawm kev tiv thaiv overheating rau cov khoom siv hluav taws xob.
2.NTC Thermistor
Negative Temperature CoeffCient (NTC) yog hais txog lub thermistor phenomenon thiab cov khoom uas muaj qhov kub tsis zoo coefficient vim qhov tsis kam txo qis exponentially thaum kub nce. Cov khoom siv yog semiconducting ceramic ua los ntawm ob los yog ntau dua hlau oxides xws li manganese, tooj liab, silicon, cobalt, hlau, npib tsib xee, thiab zinc, uas yog tag nrho tov, tsim, thiab sintered los tsim ib tug thermistor nrog ib tug tsis zoo kub coefficient (NTC. ).
Kev txhim kho theem ntawm NTC thermistor: los ntawm nws qhov kev tshawb pom nyob rau hauv lub xyoo pua 19th mus rau nws txoj kev loj hlob nyob rau hauv lub xyoo pua 20th, nws tseem ua tiav.
Qhov ntsuas qhov ntsuas kub ntawm qhov ntsuas kub tuaj yeem ncav cuag 0. 1 ℃, thiab lub sijhawm ntsuas kub yuav tsawg dua 10s. Nws tsis yog tsuas yog haum rau granary tus pas ntsuas kub, tab sis kuj tuaj yeem siv rau hauv cov khoom noj khoom haus, tshuaj thiab kev noj qab haus huv, kev ua liaj ua teb, dej hiav txwv, qhov tob tob, qhov siab, qhov ntsuas kub ntawm glacier.
3.CTR thermistor
Critical Temperature Thermistor CTR (Critical Temperature Resistor) muaj qhov tsis zoo ntawm kev hloov pauv yam ntxwv, ntawm qhov kub thiab txias, qhov tsis kam txo qis heev nrog qhov kub thiab txias coefficient. Cov khoom muaj pes tsawg leeg yog vanadium, barium, strontium, phosphorus thiab lwm yam khoom ntawm lub cev sib xyaw sintered, yog ib lub iav semiconductor, tseem hu ua CTR rau iav thermistor. CTR tuaj yeem siv ua lub tswb ntsuas kub thiab lwm yam kev siv.
Thermistor kuj tseem siv tau los ua cov khoom siv hluav taws xob hauv hluav taws xob rau kev ntsuas hluav taws xob hluav taws xob thiab kev them nyiaj kub ntawm thermocouple txias kawg. Tsis siv neeg nce kev tswj tau tuaj yeem paub tau los ntawm kev siv tus kheej cua sov tus yam ntxwv ntawm NTC thermistor, thiab amplitude stabilization Circuit Court, ncua Circuit Court thiab tiv thaiv Circuit Court ntawm RC oscillator tuaj yeem tsim. PTC thermistor feem ntau yog siv rau hauv cov khoom siv hluav taws xob overheating tiv thaiv, contactless relay, qhov kub thiab txias, tsis siv neeg nce tswj, pib lub cev muaj zog, ncua sij hawm, xim TV tsis siv neeg demagging, hluav taws kub tswb thiab kub them, thiab lwm yam.
Post lub sij hawm: Jan-16-2023