Multimeters puas tuaj yeem ntsuas qhov sib thooj sib txuas?
Qhov sib thooj hloov tau tuaj yeem ntsuas nrog lub multimeter; nws qhov kev ntsuas kuj yooj yim heev, tsuas yog xav txog nws li kev hloov.
Yog li, cia peb nkag siab tias qhov kev sib thooj no yog dab tsi.
Qhov sib thooj hloov, raws li lub npe qhia, yog "ze" rau kev ua haujlwm ntawm kev hloov. Qhov sib thooj hloov pauv yuav tsum raug ntaus nqi rau txoj haujlwm hloov, thiab peb qhov kev hloov pauv mus txawv tebchaws yog qhov sib txawv loj tshaj plaws yog tias qhov sib thooj hloov tsis tuaj yeem kov cov khoom ntsuas, koj tuaj yeem ua tiav txoj haujlwm ntsuas kev ua haujlwm.
Hauv luv luv, lub ntsiab lus ntawm qhov sib thooj hloov pauv tseem yog qhov hloov pauv, tsuas yog txoj hauv kev ua haujlwm ntawm qhov hloov pauv no txawv, thiab qhov sib thooj sib thooj ntawm kev ua lag luam tau muab faib ua pawg hauv qab no:
Photoelectric sib thooj hloov: los ntawm kev xav ntawm lub teeb, thaum muaj kev cuam tshuam thaiv lub teeb hluav taws xob, lub cuab yeej yuav tsim lub teeb liab rau lossis tawm.
Hall hom sib thooj hloov: peb yuav tsis paub lo lus Hall zoo, qhov tseeb, Hall yog ib daim ntawv ntawm Circuit Court, nws yog rhiab heev rau cov khoom sib nqus, thaum tshawb pom cov khoom sib nqus, tsis tuaj yeem ntawm Circuit Court yuav hloov, thiab Tom qab ntawd los ntawm kev hloov pauv hauv Circuit Court, qhov tso zis ntawm cov lus teb rau lub teeb liab rau lossis tawm:
Capacitive sib thooj hloov: hais tias capacitive, peb yuav tsum to taub ib tug dielectric tas li, thaum lub capacitance ntawm ob tug ncej ntawm lub phaj thaum ib yam khoom dhau mus, lub dielectric tas li yuav hloov, thiaj li hais tias ib tug teeb liab generated, thiab ces hloov dua siab tshiab los ntawm lub Circuit Court rau. tso zis.
Yuav ua li cas koj siv lub multimeter los ntsuas qhov sib thooj hloov?
Txawm hais tias nws tseem yog qhov hloov pauv, tab sis qhov ntsuas ntawm qhov sib thooj hloov pauv no yog qhov tshwj xeeb me ntsis, peb ntsuas ncaj qha, yeej tsis tuaj yeem ntsuas ib yam dab tsi, vim tias qhov sib thooj hloov pauv hauv kev ua haujlwm ib txwm xav tau los muab lub zog, sib npaug rau cov khoom siv hluav taws xob, koj yuav tsum tau. txuas lub hwj huam mov, thiab feem ntau ntawm lawv yog DC 24V.
Yog li, txuas lub hwj huam mov mus rau qhov sib thooj hloov yog thawj kauj ruam ntawm kev ntsuas.
Thaum peb muab qhov sib thooj hloov hluav taws xob, peb kuj yuav tsum nkag siab txog nws cov kab hluav taws xob sab hauv, peb tseem siv peb-xaim sib thooj hloov ua piv txwv, paub qee qhov kev paub ntawm cov phooj ywg hauv Circuit Court tsis yooj yim pom, qhov sib thooj hloov mus rau thiab tawm. yog txuam nrog ib tug transistor, thaum qhov sib thooj hloov lub ntsiab Circuit Court hnov ib yam khoom, yuav tsim ib tug Circuit Court nyob rau hauv lub on thiab off hloov, yog li ntawd yuav nyob rau hauv daim duab ntawm lub load ntawm ob sab ntawm lub Circuit Court yog ib tug kaw voj! Qhov no yuav tsim ib lub voj voog kaw ntawm ob qhov kawg ntawm cov khoom thauj hauv daim duab hauv qab no, uas yog, 24V fais fab mov ntxiv rau ob sab ntawm lub load, uas yog qhov ua haujlwm ntawm qhov sib thooj hloov.
