OL txhais li cas ntawm multimeter?

OL multimeter nyeem ntawv txhais li cas? Qhov no yog ib lo lus nug uas feem ntau koj yuav ntsib nrog "OL" nyeem ntawv thaum siv koj cov multimeter yooj yim.

Thaum peb ua tiav, peb yuav ua tib zoo saib seb OL sawv cev rau ntawm multimeter.

OL Nyeem ntawv ntawm multimeter

Nws yog ib tug acronym rau "qhib voj". hais txog qhov tsis muaj kev tawm tswv yim mechanism. Lo lus no yog hais txog txhua qhov xwm txheej uas koj tab tom sim ntsuas lub teeb liab hluav taws xob yam tsis siv lub voj voog tawm tswv yim. Li no, nws muaj feem xyuam rau ntau yam khoom siv.

OL tej zaum yuav muaj lub ntsiab lus txawv. Txawm li cas los xij, qhov no yog lwm txoj hauv kev qhia qhov tsis muaj kev txuas ntxiv. Nws tseem tuaj yeem xa mus rau qhov siab tshaj qhov txwv ntawm qhov ntsuas hluav taws xob thiab ntsuas tam sim no.

Tsis yog 1. Kev sim txuas ntxiv 

Yog tias qhov ntsuas tsis tau lees paub, cov zaub yuav pom ib lossis OL (qhib voj). Qhov no txhais tau tias tsis muaj kev txuas ntxiv. Hluav taws xob tam sim no tsis tuaj yeem dhau los ntawm kev sojntsuam mus rau kev sojntsuam yog tias tsis muaj txoj hauv kev rau nws.

Tsis yog 2. Test voltage 

Yog tias qhov zaus tsawg, lub vijtsam yuav tso tawm ib lossis OL, qhia tias nws tsis muaj lossis ntau dhau. Qhov no yuav tsis ua mob lossis ua puas rau koj lub multimeter, tab sis nws yuav pom zoo kom kho lub dial.

No. 3. Kev sim siab

Yog hais tias lub caij lossis Circuit Court koj ntsuas tsis muaj qhov txuas ntxiv, cov zaub yuav pom ib lossis OL. Yog li ntawd, nws muaj kev tiv thaiv tsis kawg.

# 4: Kev ntsuas qhov ntws tam sim no

Thaum ntsuas qhov ntsuas hluav taws xob tam sim no, cov zaub yuav qhia kuv lossis OL yog tias koj lub multimeter yooj yim dhau lawm. Qhov no yuav pab tau thaum kuaj lub cav.

Yog li OL nyeem ntawv thaum lub sij hawm ntsuas hluav taws xob yuav qhia tias muaj qee yam tsis raug, nyob ntawm koj qhov xwm txheej. Txawm hais tias qhov kev ncaj ncees ntawm cov khoom raug kuaj xyuas, lossis qhov dhau tam sim no.

Infinite kuj ntawm ib tug multimeter

Raws li tau tham ua ntej, OL tshwm sim hauv ib lub 'meter' yog tias qhov kev tawm tsam tsis kawg. Qhov no qhia tau hais tias cov khoom uas raug ntsuas tsis muaj hluav taws xob tam sim no ntws los ntawm lub caij lossis lub voj voog. Koj tuaj yeem ntsuas qhov tsis kam hauv ohms nrog multimeter.  

Cia peb ua ib qho piv txwv. Koj tuaj yeem siv kev tiv thaiv los ntsuas cov dej ntws los ntawm cov yeeb nkab. Txij li thaum cov yeeb nkab thaiv muaj kev tiv thaiv ntau dua, cov dej tsawg dhau los ntawm nws. Ntawm qhov tod tes, ib qho thaiv cov yeeb nkab uas tsis tso cai rau cov dej hla dhau los muaj kev tiv thaiv siab. Nws yog hu ua infinite kuj. (1)

Thaum ntsuas hluav taws xob tam sim no, kev ntsuas multimeter ua tib yam. Yog tias qhov ntsuas ohm siab dhau lawm, nws yuav tsis tuaj yeem kuaj xyuas qhov tam sim no. Nws yuav tso saib "OL" uas txhais tau tias qhib lub voj. Thaum qhov no tshwm sim, koj yuav tsum tau txo qhov tsis kam - los ntawm kev rub cov lus qhia sojntsuam lossis siv cov tshuaj ntsuam xyuas tshwj xeeb.

OL thiab 0 thaum kuaj xyuas tsis kam

"OL" txhais tau tias "qhib voj". Qhov no txhais tau hais tias lub multimeter tsis tuaj yeem ntsuas tus nqi tiv thaiv uas qis dua li tam sim no. Lub 'meter' sim tso saib qhov ntsuas no, tab sis vim nws tsis tuaj yeem tso ntau tus lej, nws qhia "OL". Qhov no tuaj yeem tshwm sim thaum ntsuas qhov tsis kam qis heev lossis thaum siv qhov hluav taws xob qis hauv Circuit Court hauv kev sim.

0 tuaj yeem pom nyob rau hauv qhib Circuit Court thaum tsis muaj kev sib txuas ntawm ob lub terminals. Tsis muaj cov khoom sib txuas nrog tus pin analog input ntawm microprocessor. Nws tau pom tias "L" hauv qee qhov ntau thiab tsawg. Ib qho qhib "O" Circuit Court yog ib lub voj voog uas txuas ntxiv tau tawg vim kev tawg ntawm txoj kev tam sim no. Lub kaw Circuit Court yog ua tiav thiab muaj kev txuas mus zoo thoob plaws. Lub kaw lus kaw tsim ib txoj hauv kev ua tiav rau kev txav ntawm lub zog nquag ntawm qhov chaw mus rau qhov chaw thau khoom. (2)

Txawm li cas los xij, yog tias koj muab qhov zoo sib xws rau ntawm lub rooj noj mov, cov txiaj ntsig yuav txawv. Nws nyob ntawm seb muaj pes tsawg tus resistors txuas nrog cov kab nuv ntses ntawm txhua qhov kawg. Yog tias 0 ohms nyob, lawv yuav coj zoo li cov xov hlau thiab txuas ob tus pins ua ke. Qhov no yuav ua rau tsis muaj kev sib txuas thiab koj qhov ntsuas ntsuas "0" lossis qhib Circuit Court.

Hauv qab no yog qee qhov lwm yam kev ntsuas kev ntsuas ntsuas ntsuas peb tau sau. Koj tuaj yeem tshawb xyuas lawv lossis bookmark lawv rau kev nyeem tom qab.

• Yuav ua li cas ntsuas DC voltage nrog multimeter
• Yuav ua li cas kuaj lub capacitor nrog multimeter
• Yuav ua li cas ntsuas amps nrog multimeter

tswv yim pom zoo

(1) dej ntws - https://www.dpi.nsw.gov.au/fishing/habitat/threats/water-flow

(2) active zog - https://www.scienceworld.ca/resource/active-energy-sources/