Txoj Cai Ua Haujlwm ntawm Resistor

Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub resistor yog qhov yooj yim heev, raws li cov khoom siv conductivity. Cov khoom sib txawv muaj peev xwm sib txawv los cuam tshuam cov hluav taws xob tam sim no. Piv txwv li, hlau yog ib tug zoo conductor ntawm hluav taws xob, thiab hluav taws xob tam sim no khiav ceev heev nyob rau hauv hlau; Txawm li cas los xij, qee qhov tsis yog xim hlau lossis cov alloys tshwj xeeb muaj qis dua, thiab tam sim no dhau los ntawm cov ntaub ntawv no qeeb.
Resistors feem ntau yog ua los ntawm cov ntaub ntawv uas tsis zoo conductivity, xws li carbon zaj duab xis, hlau zaj duab xis, hlau oxide zaj duab xis, thiab lwm yam. Thaum tam sim no dhau los ntawm cov ntaub ntawv no, ib feem ntawm cov hluav taws xob lub zog yuav noj vim cov yam ntxwv tsis kam ntawm cov ntaub ntawv, uas. yuav hloov mus rau hauv tshav kub zog thiab dissipated. Yog li, qee zaum peb xav tias tus resistor kub me ntsis, vim tias nws "kub" thaum ua haujlwm.
Hauv tsev neeg resistor, muaj ntau tus tswv cuab nrog lawv tus kheej yam ntxwv thiab siv. Hauv qab no, cia peb paub ob peb yam "tsev neeg":
1. Tsau resistor: Qhov no yog hom yooj yim tshaj plaws, thiab tus nqi kuj tau txiav txim siab thaum lub sijhawm tsim khoom thiab tsis tuaj yeem hloov pauv. Nws zoo li lub nrawm nrawm 'ceev pob', qhov twg qhov cuam tshuam rau qhov tam sim no raug kho tsis hais qhov xwm txheej twg.
2. Kev sib txawv ntawm cov resistor: Tsis zoo li cov resistors ruaj khov, tus nqi kuj tuaj yeem hloov kho raws li qhov xav tau. Nws zoo li "kev nrawm nrawm" uas tuaj yeem kho qhov nrawm, los ntawm kev sib hloov lossis zawv zawg ib qho kev tivthaiv, nws tuaj yeem hloov qhov kev cuam tshuam rau qhov tam sim no. Qhov no yog qhov tseem ceeb heev nyob rau hauv cov xwm txheej uas yuav tsum tau kho qhov zoo ntawm qhov ntsuas hluav taws xob.
3. Thermistor: Tus nqi tsis kam ntawm qhov resistor hloov nrog kub. Qhov kub thiab txias yuav nce, thiab tus nqi kuj yuav txo; Qhov kub thiab txias yuav txo qis, thiab tus nqi kuj yuav nce ntxiv. Nws zoo li "thermometer" nyob rau hauv ib lub voj voog, muaj peev xwm ntawm kev hnov ​​​​qab thiab teb rau qhov kev hloov ntawm qhov kub thiab txias.
4. Photoresistor: Raws li lub npe qhia, nws cov nqi kuj raug cuam tshuam los ntawm kev siv lub teeb. Qhov muaj zog ntawm lub teeb pom kev zoo, qhov me me ntawm cov nqi kuj yuav yog; Qhov tsis muaj zog lub teeb, qhov siab dua tus nqi kuj yuav yog. Hom resistor no feem ntau yog siv rau hauv cov khoom siv uas yuav tsum tau txais kev pom ntawm lub teeb, xws li kev hloov tsis siv neeg ntawm txoj kev teeb.
5. Varistor: Nws tus nqi kuj yuav hloov nrog qhov sib txawv ntawm qhov voltage. Ntawm qee qhov tshwj xeeb voltages, nws tus nqi kuj yuav txo qis, ua haujlwm los tiv thaiv Circuit Court. Piv txwv li, thaum lub varistor txuas nrog ib txoj kab hluav taws xob, nws tuaj yeem ua tau sai thaum qhov hluav taws xob tam sim ntawd nce, qhia txog tam sim no dhau mus rau hauv av thiab tiv thaiv lwm yam khoom los ntawm kev puas tsuaj.
6. Fuse resistor: Qhov no yog ib hom tshwj xeeb ntawm cov resistor uas yuav yaj zoo li lub fuse thaum tam sim no tshaj ib qho nqi, yog li txiav tawm ntawm lub voj voog. Nws zoo li "tus neeg ncaws pob" hauv Circuit Court, sawv ntawm lub sijhawm tseem ceeb los tiv thaiv kev nyab xeeb ntawm tag nrho cov kab ke hauv Circuit Court.
Resistors, "lub luag haujlwm me me" hauv Circuit Court, txawm tias tsis pom tseeb, ua lub luag haujlwm tseem ceeb. Nws ntsiag to tswj kev ruaj ntseg thiab kev nyab xeeb ntawm Circuit Court nyob rau hauv nws tus kheej txoj kev, tso cai rau lub tam sim no qeeb, hloov, los yog ua si ntau yam lwm yam luag hauj lwm nyob rau hauv uas xav tau. Kuv vam tias dhau los ntawm kev qhia niaj hnub no, txhua tus tuaj yeem muaj kev nkag siab ntau dua thiab nkag siab tob ntawm cov resistors.