Lub diode iav ntawm multimeter tuaj yeem teeb lub diode?
Muaj ib lub diode iav ntawm lub multimeter, uas tuaj yeem siv los ntes diodes thiab teeb lawv. Tab sis lub teeb pom kev zoo tsis yog qhov tseeb, muaj ob qho laj thawj tseem ceeb: 1) qhov hluav taws xob ntawm lub diode iav ntawm multimeter yog tsawg; 2) Kev ua haujlwm voltage ntawm lub teeb-emitting diode yog siab.
Qhov voltage ntawm lub diode iav ntawm lub multimeter feem ntau yog hais txog 3V. Qhov hluav taws xob no tuaj yeem teeb lub teeb pom kev zoo tib yam-emitting diode. Thaum ntsuas qhov zoo ntawm lub diode, koj tuaj yeem siv qhov kev sim liab coj los kov tus ncej zoo ntawm LED, thiab qhov kev ntsuam xyuas dub ua rau tus ncej tsis zoo ntawm LED. Koj tuaj yeem txiav txim siab thaum lub LED qhib. LEDs zoo. Txawm li cas los xij, qhov tso zis hluav taws xob ntawm qee qhov ntsuas qis, yog li LED tsis tuaj yeem teeb lossis tuaj yeem teeb pom kev me ntsis. Kuv tau siv lub tshuab hluav taws xob pheej yig dua los ntawm Unilever ua ntej, tab sis LED tsis tuaj yeem qhib, thiab txoj haujlwm diode yog qhov tsis muaj txiaj ntsig, uas tsis yooj yim heev.
Lub diode iav ntawm multimeter tuaj yeem teeb lub diode?
LED yog ib hom tshwj xeeb ntawm diode nrog rau pem hauv ntej conduction voltage poob, thiab qhov parameter no txawv heev. Lub teeb-emitting diodes ntawm cov xim sib txawv muaj qhov sib txawv conduction voltage tee. Feem ntau hais lus, qhov conduction voltage poob ntawm lub teeb liab-emitting diode yog qhov tsawg tshaj plaws, nyob rau hauv qhov ntau ntawm (1.5-2) V; ntsuab yog tom ntej no, ntawm txog (1.8-2.5) V; thiab qhov hluav taws xob xiav poob yog qhov siab tshaj plaws, ntawm (2) -3.5) V los yog li ntawd. Yog li ntawd, thaum tib lub saib ntsuas LEDs ntawm cov xim sib txawv, nws qhov ci ci txawv. Feem ntau, liab yog qhov ci tshaj plaws thiab xiav yog qhov tsaus tshaj plaws. Txawm tias qee cov xim tsis tuaj yeem teeb.
Siv multimeter los ntsuas lub cev muaj zog nrog plaub kab, puas yog ib txwm muaj ob lub motors muaj suab nrov?
Plaub-xaim lub cev muaj zog yog hais txog 220V ib-theem lub cev muaj zog, ob qho uas pib windings thiab lwm qhov yog khiav windings.
Yuav ua li cas txiav txim seb ob lub xov hlau pib winding los yog khiav winding?
Txoj kev txiav txim rau lub ntsiab thiab pab windings ntawm ib-theem lub cev muaj zog yog tsuas yog siv cov ntaub ntawv tsis kam ntawm multimeter los kuaj. Lub auxiliary winding (pib winding) muaj ib tug nyias coil nrog ntau lem, yog li cov kuj yuav tsum loj, feem ntau kaum ntawm ohms mus rau kaum ntawm ohms; lub ntsiab winding (khiav winding) yuav tsum tau khiav mus rau lub sij hawm ntev, yog li txoj kab uas hla ntawm lub coil yog tuab thiab cov lem yog me me, tus nqi kuj yuav tsum me me, feem ntau tsuas yog ob peb ohms.
Siv ib tug multimeter los ntsuas plaub xov hlau, puas yog ib txwm rau ob lub xov hlau kom muaj suab nrov?
Thaum cov qib tsis kam ntawm lub multimeter tau teeb tsa rau qib qis buzzer, yog tias muaj lub suab nrov "beep" buzzer, nws txhais tau hais tias nws nyob rau hauv luv luv-circuit los ntawm lub xeev.
Nws tsis yog ib txwm hais tias muaj ob lub xov hlau buzzing, vim hais tias txawm tias khiav winding nrog tus nqi qis kuj yuav muaj qhov tsis kam ntawm ob peb ohms, thiab lub suab nrov yuav tsum tsis txhob tshwm sim. Yog li ntawd, nws tau txiav txim siab tias yuav tsum muaj qhov cuam tshuam luv luv hauv lub winding.
