Yuav ua li cas nyeem ntawv nyeem ntawm AC 500 iav ntawm pointer multimeter
Rau cov kab ntau kab ntawm tus pointer-type universal dial, ntau tus pib zoo li tsis meej pem. Lawv tsis paub yuav ua li cas nyeem cov lus qhia nyeem ntawm lub dial qhov twg tus pointer nyob, tshwj xeeb tshaj yog rau high-voltage zog thaum ntsuas voltage. Kev nyeem ntawv, vim hais tias qhov ntsuas ntawm qhov ntsuas hluav taws xob ntawm qee qhov taw qhia thaum ntxov digital meter dials tsuas yog qhia tus nqi ntawm 250 ntawm qhov siab tshaj plaws. Qhov tseeb, nyob rau hauv lub iav ntawm 500, uas yog muab cov kev nyeem ntawv ntawm lub teev los ntawm 2 lub sij hawm, uas yog qhov tseeb nyeem ntawv. Yog hais tias muaj ib lub iav ntawm 100V, muab 4 zaug.
Lub pointer multimeter feem ntau yog siv rau kev ntsuas ntawm AC thiab DC voltage, tam sim no thiab tsis kam. Tag nrho cov pointer multimeter yog tsim los ntawm meter taub hau, meter taub hau dial, meter taub hau kho ntsia hlau, muaj nuj nqi pob qhov rooj, ohm kho pob qhov rooj, kuaj lead jack, transistor nrhiav jack, kuaj txhuas, thiab lwm yam. muaj kev faib tawm ntawm lub dial los qhia cov kab sib txawv thiab qhov ntsuas qhov ntsuas. Lub dial scale kab ntawm tus pointer multimeter yog tsim los ntawm 5 concentric arc scale kab, thiab txhua kab kab yog cim nrog ib tug tas luav ntsuas tus nqi, thiab cov scale qhov tseem ceeb yuav tsum tau nyeem ua ke nrog lub iav txoj hauj lwm ntawm lub pob qhov rooj muaj nuj nqi.
Cov kab ntawm lub dial, los ntawm sab saum toj mus rau hauv qab, yog:
1. Resistance scale (Ω)
2. DC / AC voltage (DC / AC)
3. Tam sim no tus nqi ntsuas (A) [Ceeb Toom: Qee qhov ntsuas kab ntawm qhov ntsuas tam sim no thiab qhov ntsuas hluav taws xob ntawm lub taub hau 'meter' muaj ntau, thiab lawv nyob rau tib kab kab]
4. Decibel dial (DB)
5. Transistor magnification nplai (hFE)
Lub dial ntawm lub cim tshiab ntawm pointer multimeter muaj qhov cuam tshuam ntawm lub dial kom tshem tawm kev ntsuas parallax.
Cov lus nug ntawm cov ntsiab lus yog tias qhov ntsuas kab tus nqi ntawm cov nplai kab ntawm qhov ntsuas kab ntawm lub dial ntawm tus pointer multimeter qhia qhov kev nyeem ntawv siab tshaj plaws ntawm 250, tab sis qhov kev ua haujlwm ntawm lub tshuab multimeter muaj ntau qhov kev xaiv ntawm 500 qib, thiab qee qhov. meters txawm muaj ib tug ntau ntawm 1000 qib. Yuav ua li cas nyeem qhov ntsuas qhov ntsuas hluav taws xob thaum nws mus txog 500 iav? Raws li pom hauv daim duab hauv qab no, qhov ntsuas qhov ntsuas hluav taws xob muaj nuj nqi ntawm 500-hom multimeter muaj 500 lub zog los xaiv. Tsis tas li ntawd, cov style thiab voltage ntau nyob rau hauv daim duab hauv qab no txawm muaj 2500V AC thiab DC voltage ntsuas ntau yam kev xaiv. Thaum lub 'meter' nyob rau hauv daim duab hauv qab no ntsuas 2500V AC lossis DC, xim dub Lub xeem cov hlau tsis txav, thiab cov hlau kuaj liab yuav tsum tau muab tso rau hauv 2500V voltage jack nyob rau sab laug ces kaum ntawm daim duab hauv qab no:
Yuav ua li cas nyeem cov ntawv nyeem thaum ntsuas qhov voltage?
AC thiab DC voltage scale qhov tseem ceeb ntawm lub dial ntawm lub multimeter yog faib equidistantly, nrog rau tag nrho ntawm 5 loj division, txhua tus yog muab faib ua 2 sib npaug sib faib ntawm nruab nrab faib, thiab txhua qhov nruab nrab faib yog subdivided rau 5 me me. Txhua daim phiaj qhia txog tus nqi nyeem ntawv sib txawv vim qhov sib txawv ntawm cov iav xaiv.
Cov lus nug tseem ceeb yog yuav ua li cas nyeem cov ntawv nyeem ntawm lub dial thaum lub iav nyob ntawm 500? Qhov tseeb, nws yooj yim heev. Muaj 5 daim phiaj loj ntawm lub dial. Lub sijhawm no, txhua daim phiaj loj sawv cev "100", thiab txhua daim phiaj me me sawv cev "10". Qhov ntawd yog hais tias, qhov siab tshaj plaws "250" yog tshwm sim nyob rau sab xis ntawm txoj kab teev. Yog tias koj ntaus 500 iav, ces koj muab qhov ntsuas no los ntawm 2 kom tau txais kev nyeem tam sim no. Yog hais tias lub multimeter nyob rau hauv daim duab saum toj no yog teem rau 2500 iav, ces qhov kev nyeem ntawv yog multiplied 10 zaug. Yog hais tias tus pointer taw tes rau 250 teev ntawm lub dial, kev nyeem ntawv yuav yog 2500.
