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May 24, 2022

Dab tsi yog qhov mechanism ntawm NTC thermistor?

NTC Thermistor

Qhov ntsuas kub tsis zoo ntawm lub thermistor, tshwj xeeb tshaj yog cov khoom siv hluav taws xob lossis cov khoom siv hluav taws xob uas muaj qhov tsis zoo ntawm qhov kub thiab txias, kom muab tso rau hauv qhov tsis zoo, NTC thermistor yog qhov ntsuas kub tsis zoo coefficient thermistor.


Nws yog tsim los ntawm manganese, cobalt, npib tsib xee thiab tooj liab hydroxides ua cov ntaub ntawv tseem ceeb, thiab yog tsim los ntawm ceramic art.


Cov khoom siv hydroxide no muaj cov yam ntxwv ntawm cov khoom siv semiconductor, vim tias nws zoo ib yam li cov khoom siv semiconductor xws li germanium thiab silicon nyob rau hauv cov nqe lus ntawm conductivity. Ntawm qhov kub thiab txias, cov khoom siv hlau oxide no muaj tsawg tsawg ntawm cov hluav taws xob dawb.


Yog li ntawd, tus nqi tsis kam ntawm lub thermistor yog siab dua, thiab tus naj npawb ntawm cov hluav taws xob dawb nce nrog qhov nce ntawm qhov kub thiab txias, yog li tus nqi tsis kam ntawm lub thermistor txo.


Qhov sib txawv ntawm cov thermistor ntawm chav tsev kub yog 10O ~ 1, 000, 000 ohms, thiab qhov kub coefficient yog -2 feem pua ​​~ -6.5 feem pua ​​.


Thermistors tuaj yeem siv dav hauv kev ntsuas qhov ntsuas kub, ntsuas qhov kub thiab txias, tiv thaiv kev kub ntxhov, ntsuas kub, ntsuas kub, ntsuas kub thiab lwm yam.


Cov muaj pes tsawg leeg ntawm qhov kub coefficient thermistor yog hais txog qhov exponential txo qis hauv tus nqi ntawm cov resistor thaum qhov kub nce.


Thermistor tej yam kev mob thiab raw cov ntaub ntawv uas tsis zoo kub coefficient Thermistor semiconducting ceramics feem ntau yog hlau oxide ceramics nrog spinel qauv los yog lwm yam qauv.


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