Thermistor hlau oxide yog ua raws li cov qauv sib txawv
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Thermistor hlau oxide yog ua raws li cov qauv sib txawv
Thermistor yog cov khoom siv hluav taws xob uas muaj cua sov ua los ntawm cov yam ntxwv uas tus nqi tsis kam ntawm cov khoom siv hluav taws xob hloov pauv nrog qhov kub thiab txias. Nws yog tsim los ntawm qee cov hlau oxides raws li cov qauv sib txawv. Hauv qee qhov kub thiab txias, qhov ntsuas kub ntawm qhov ntsuas nruab nrab tuaj yeem paub tau raws li qhov kev hloov ntawm qhov tsis kam ntawm cov ntsuas ntsuas.
Thermistor txoj haujlwm ua haujlwm
Lub thermistor yog ib hom kev tiv thaiv sensor. Tus nqi tsis kam ntawm lub thermistor hloov nrog qhov hloov pauv ntawm qhov kub thiab txias, uas txawv ntawm qhov kev ruaj khov dav dav. Tus nqi ntawm cov hlau tsis kam nce nrog kev nce qib ntawm kev cog qoob loo, tab sis qhov sib txawv yog qhov tseeb rau semiconductors. Nws tus nqi kuj txo qis sharply nrog qhov kub thiab txias thiab qhia tias nonlinearity. Thaum qhov kub hloov pauv zoo ib yam, qhov kev hloov pauv ntawm lub thermistor yog li 10 npaug ntawm cov hlau lead thermal kuj. Yog li ntawd, nws tuaj yeem hais tau tias lub thermistor tshwj xeeb yog rhiab rau qhov kub thiab txias. Qhov ntsuas kub ntawm cov khoom siv hluav taws xob yog vim qhov kev coj ua ntawm cov khoom siv hluav taws xob yog cov khoom siv hluav taws xob (electrons, qhov). Txij li thaum tus naj npawb ntawm cov cab kuj nyob rau hauv ib tug semiconductor yog ntau tsawg tshaj li cov dawb electrons nyob rau hauv ib tug hlau, nws resistivity yog heev loj. Raws li qhov kub thiab txias nce, tus naj npawb ntawm cov neeg nqa khoom koom nrog hauv kev coj ua hauv semiconductor yuav nce, yog li cov conductivity ntawm semiconductor yuav nce, thiab nws cov resistivity kuj yuav txo.
Thermistor indirectly cua sov
Tsis tas li ntawd, muaj ib hom cua sov tsis ncaj, uas yuav tsum muaj qhov cua sov sab nraud
Cov thermistors feem ntau yog puag ncig, ntxhua khaub ncaws, zoo li lub raj, thiab lwm yam. Qhov feem ntau siv tam sim no yog qhov tsis zoo kub coefficient thermistor (NTC), uas tuaj yeem muab faib ua hom ntsuas kub, hom voltage stabilization, thiab hom zoo tib yam.
Muaj ntau ntau hom thiab sib txawv, cov khoom siv yog lub raj zoo, disc duab, thiab lwm yam.
Daim ntawv thov ntau yam ntawm PTC tau dhau los ua qhov dav thiab dav. Ntxiv rau qhov ntsuas kub thiab ntsuas qhov ntsuas kub, nws kuj tau siv dav hauv degaussing circuits ntawm cov xim TV teeb, tub yees, hluav taws xob tshuaj tua yoov tshaj cum, hluav taws xob hlau, thiab lwm yam hauv Circuit Court ntawm cov khoom siv hauv tsev.
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