Yuav ua li cas ntsuas qhov sib thooj hloov nrog lub multimeter
Qhov sib thooj hloov tau ntsuas los ntawm multimeter; Nws txoj kev ntsuas kuj yog qhov yooj yim heev, tsuas yog suav tias yog qhov hloov pauv.
Yog li, cia saib seb qhov kev sib thooj sib thooj no yog dab tsi.
Qhov sib thooj hloov, raws li nws lub npe cuam tshuam, yog qhov hloov pauv uas "qhov sib thooj" yuav ua haujlwm. Qhov sib thooj hloov yuav tsum yog nyob rau hauv txoj hauj lwm hloov. Qhov sib txawv loj tshaj plaws los ntawm peb qhov kev hloov pauv mus txawv tebchaws yog qhov kev sib thooj sib thooj tuaj yeem ua tiav qhov kev ntsuas txoj hauj lwm yam tsis tau kov cov khoom ntsuas.
Hauv luv luv, lub ntsiab lus ntawm qhov sib thooj hloov pauv yog hloov, tab sis lub hauv paus ntsiab lus ntawm kev hloov pauv no txawv. Tam sim no, cov kev sib thooj sib thooj ntawm kev ua lag luam tau kwv yees faib ua pawg hauv qab no:
Photoelectric sib thooj hloov: los ntawm qhov 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 sib thooj hloov: Tej zaum koj yuav tsis paub lo lus Hall zoo li. Qhov tseeb, Hall yog ib daim ntawv ntawm Circuit Court, uas yog rhiab rau cov khoom sib nqus. Thaum kuaj pom cov khoom sib nqus, lub voj voog yuav hloov, thiab tom qab ntawd cov lus teb rau lossis tawm lub teeb liab yuav raug tso tawm los ntawm kev hloov pauv hloov pauv:
Capacitive sib thooj hloov: Thaum nws los txog rau capacitance, peb yuav tsum to taub qhov teeb meem ntawm dielectric tas li. Thaum ib yam dab tsi hla ntawm ob daim hlau ntawm lub capacitor, lub dielectric qhov tsis tu ncua yuav hloov, yog li tsim ib lub teeb liab, uas yuav hloov dua siab tshiab los ntawm Circuit Court thiab tso zis.
Yuav ua li cas ntsuas qhov sib thooj hloov nrog lub multimeter?
Txawm hais tias nws tseem yog qhov hloov pauv, qhov ntsuas ntawm qhov sib thooj hloov pauv no tshwj xeeb me ntsis. Peb tsis tuaj yeem ntsuas qhov ncaj qha, vim qhov kev sib txuas sib txuas no xav tau lub zog hluav taws xob thaum nws ua haujlwm ib txwm, ib yam li cov khoom siv hluav taws xob, uas yuav tsum tau txuas nrog lub hwj chim, thiab feem ntau yog DC 24V.
Thaum peb muab lub hwj chim rau qhov sib thooj hloov, peb tseem yuav tsum paub txog nws txoj kab hluav taws xob sab hauv. Cia peb coj peb-xaim sib thooj hloov ua piv txwv. Nws tsis yog qhov nyuaj rau cov phooj ywg uas paub qee qhov kev paub hauv Circuit Court kom pom tias qhov kev sib txuas ntawm qhov sib thooj yog cuam tshuam nrog triode. Thaum lub ntsiab Circuit Court ntawm qhov sib thooj hloov tau hnov ib yam dab tsi, qhov kev hloov pauv ntawm qhov hluav taws xob hauv Circuit Court yuav tshwm sim, yog li ntawd ob qhov kawg ntawm kev thauj khoom hauv daim duab hauv qab no tsim ib lub voj kaw, uas yog, 24V fais fab txuas ntxiv rau ob sab ntawm lub load, uas yog tiag tiag lub hauv paus ntsiab lus ua hauj lwm ntawm qhov sib thooj hloov.
Thaum peb ntsuas nrog ib lub multimeter, peb tuaj yeem paub seb qhov sib thooj ntawm qhov sib thooj yog qhib lossis tawm los ntawm kev ntsuas qhov voltage ntawm ob sab ntawm lub load.
Thov nco ntsoov ntawm no tias vim muaj ntau hom kev sib txuas sib txuas, nws tsis tas yuav yog qhov chaw nres nkoj thauj khoom thiab lub zog hluav taws xob yog qhov zoo lossis tsis zoo, thiab qhov ntsuas qhov tseeb yuav tsum tau ua raws li peb cov khoom siv.
