Ntau cov lus qhia rau kev siv tus multimeter rau kev sim ua voj voog
Kev ntsuas ntawm voltage
1. Kev ntsuas ntawm DC voltage, xws li roj teeb, hluav taws xob etoable fais fab tshuaj, etc. Ua ntej, ntxig qhov kev sojntsuam dub rau hauv "V ω" lub qhov. Xaiv lub qhov rooj rau ntau qhov ntau dua li tus nqi kwv yees ("V ~" sawv cev rau cov kev sojntsuam ntev, " Tswj kev tiv tauj nyob ruaj khov. Tus nqi yuav tuaj yeem nyeem ncaj qha los ntawm cov zaub screen. Yog tias nws pom tias "1.", nws qhia tau tias qhov ntau dhau me me, thiab tom qab ntawd muaj ntau qhov kev xav tau loj ntxiv ua ntej ntsuas kev ntsuas. Yog tias "-" tshwm ntawm sab laug ntawm tus nqi, nws qhia tau tias lub zog ntawm cov kev sojntsuam, thiab kev sojntsuam liab yog txuas nrog qhov tsis zoo.
2. Kev ntsuas ntawm AC voltage. Qhov kev sojntsuam qhov kev sojntsuam yog tib yam li ntsuas DC voltage, tab sis lub qhov rooj yuav tsum tau muab rau qhov yuav tsum tau nyob ntawm ACS li ntawm AC iav "V ~". Tsis muaj qhov sib txawv los yog tsis zoo lossis tsis zoo rau hauv pob hluav taws xob, thiab txoj kev ntsuas ntsuas yog tib yam li ua ntej. Txawm hais tias ntsuas AC lossis DC elotting, yuav tsum tau them rau kev nyab xeeb ntawm tus kheej thiab tsis kov ib feem ntawm kev sojntsuam nrog koj txhais tes ua.
Kev ntsuas ntawm tam sim no
1. Kev ntsuas ntawm ncaj qha tam sim no. Ua ntej, ntxig qhov kev sojntsuam dub rau hauv "com" lub qhov. Yog hais tias ntsuas qhov ntau tshaj 200ma, ntxig rau cov kev sojntsuam liab rau hauv "10A" (socket) mus rau DC "10a" txoj haujlwm; Yog hais tias ntsuas ntsuas dua tshiab tsawg dua 200mA, ntxig rau cov kev sojntsuam liab rau hauv "200MA" (tig lub pob qhov rooj rau qhov tsim nyog tsis pub dhau 200ma DC. Tom qab hloov kho, nws tuaj yeem ntsuas tau. Txuas cov mulcateter rau hauv salkuitalation rau hauv Circuitality, kom ruaj khov, thiab kev nyeem ntawv yuav npaj tau. Yog tias nws qhia tau li "1.", tom qab ntawd qhov ntau yuav tsum tau nce; Yog tias "-" tshwm ntawm sab laug ntawm tus nqi, nws qhia tau tias tam sim no yog ntws los ntawm cov kev sojntsuam dub rau hauv multimeter.
2. Kev ntsuas ntawm AC tam sim no. Txoj kev ntsuas ntsuas yog tib yam li 1, tab sis cov iav yuav tsum tau teeb tsa rau AC iav. Tom qab ntsuas qhov tam sim no, tus cwj mem liab yuav tsum tau tso rov qab rau hauv "V ω" lub qhov. Yog tias koj tsis nco qab cov kauj ruam no thiab ncaj qha ntsuas qhov hluav taws xob, haha! Koj cov lus saib xyuas lossis lub zog yuav yuj siab rau lub ntuj nyob rau hauv ib qho kev xav tau ntawm cov pa hluav taws xiav - scrapping!
Kev Ntsuas Cov Tsis Pom
Ntxig cov kev sojntsuam mus rau hauv "com" thiab "V ω" qhov rooj mus rau qhov kev sojntsuam hauv "ω", thiab txuas lub hom phiaj rau cov hlau seem ntawm ob qho kawg ntawm lub resistor. Thaum lub sij hawm ntsuas, koj tuaj yeem kov lub resistor nrog koj txhais tes, tab sis tsis txhob kov ob qho tib si kev ntsuas yog qhov tseeb - tib neeg lub cev yog tus saib xyuas nrog tus neeg saib xyuas loj tab sis tsawg kawg nkaus. Thaum nyeem ntawv, xyuas kom tau kev sib cuag zoo ntawm kev sojntsuam thiab lub resistor; Saib xyuas rau cov koog: Chav nyob yog "ω" hauv "200K" K ω "rau" 200k "ntau, thiab" rau ntau dua saum toj no "2m".
Kev ntsuas ntawm diodes
A digital multimeter can measure light-emitting diodes, rectifier diodes... When measuring, the probe position is the same as when measuring voltage. Turn the knob to the "- |>| {{{{{0} "txoj hauj lwm (cov kev sojntsuam dub rau qhov tsis zoo rau qhov chaw zoo. 2V, uas yog cov khoom siv Silicon (1N400, 1N5400 series, thiab lwm yam) yog hais txog 0.7v, thiab ntawd ntawm lub teeb}}}. 3v. Heev
