Dab tsi yog qhov sib txawv ntawm kev teeb tsa multimeter rau resistive thiab buzzing thaum ntsuas txuas ntxiv?
Qhov kev tiv thaiv ntau yam ntawm ib qho multimeter tuaj yeem ntsuas qhov tshwj xeeb tsis kam ntawm kab, thiab tom qab ntawd peb tuaj yeem txheeb xyuas thiab txiav txim siab seb cov kab puas yog ib txwm lossis muaj qhov tsis raug raws li qhov kev tawm tsam.
Cov qib buzzer tsuas tuaj yeem txiav txim siab seb qhov kev tawm tsam ntawm txoj kab loj dua lossis me dua (feem ntau nyob ib puag ncig 30-50Ω yog siv los ua qhov sib faib, thiab muaj qee qhov sib txawv ntawm ntau qhov sib txawv).
Nco ntsoov tias qhov tseem ceeb ntawm kev tiv thaiv tus nqi rau lub multimeter's buzzer kom tawm suab nrov yog 50Ω. Tom qab ntawd, thaum qhov kev tiv thaiv ntawm txoj kab lossis kev thauj khoom tsawg dua 50Ω, lub buzzer yuav suab, thiab qhov me dua qhov tsis kam, lub suab nrov dua. Tab sis thaum txoj kab lossis kev thauj khoom hnyav dua 50Ω, lub buzzer yuav tsis suab. Yog li ntawd, thaum txoj kab tsis kam ntau dua 50Ω lossis ∞, peb tsis tuaj yeem qhia nws siv hom buzzer.
Judging qhov zoo ntawm ib-theem motors
Lub cev muaj zog ib zaug muaj ob lub coil windings, ib qho yog pib winding thiab lwm qhov yog khiav winding. Txij li thaum khiav winding kauj yog thicker thiab pib winding kauj yog nyias, qhov kev tiv thaiv ntawm qhov pib winding yog loj dua li ntawm kev khiav winding. Tus nqi tshwj xeeb kuj muaj feem xyuam nrog lub cev muaj zog qauv thiab lub zog. Nws tuaj yeem nyob ntawm ntau tshaj kaum ohms mus rau ib lossis ob puas ohms. (Qhov ntau dua lub zog ntawm lub cev muaj zog, qhov me dua qhov tsis kam; lub zog me dua, qhov ua haujlwm ntau dua)
Yog tias lub zog ntawm lub cev muaj zog me me, nws qhov kev tiv thaiv yuav loj heev. Yog tias qhov kev tawm tsam ntau dua 50Ω, qhov tshwm sim thaum peb siv qhov chaw buzzer yog tias nws tsis suab. Ib yam li ntawd, yog tias lub cev muaj zog winding raug hlawv tawm, nws yuav tsis suab thaum peb siv qhov chaw buzzer.
Yog hais tias lub cev muaj zog muaj lub zog loj, nws qhov tsis kam yuav tsawg heev. Yog tias qhov kev tiv thaiv tsawg dua 50Ω, qhov tshwm sim peb ntsuas nrog qhov teeb tsa buzzer yog buzzer. Ib yam li ntawd, yog hais tias ib tug luv luv Circuit Court tshwm sim nyob rau hauv nruab nrab ntawm lub motor winding, qhov tshwm sim peb ntsuas siv lub buzzer iav kuj yuav ib tug buzzer.
Yog li ntawd, nyob rau hauv cov xwm txheej koj hais, yeej tsis muaj txoj hauv kev los txiav txim seb lub cev muaj zog yog qhov zoo los yog phem. Txhawm rau txiav txim siab qhov zoo ntawm lub cev muaj zog, nws yog qhov yuav tsum tau soj ntsuam nws raws li lub cev muaj zog thiab lub zog.
Rau cov phooj ywg hluav taws xob uas tshiab rau multimeters, kuv xav tias thaum siv multimeter los ntsuas kab lossis cov khoom thauj, sim siv hom kev tiv thaiv tsis yog hom buzzer. Qhov no yuav pab tau heev rau kho thiab mastering lub multimeter. Tsuas yog tom qab koj paub siv lub multimeter los ntsuas qhov kev tiv thaiv koj tuaj yeem siv hom buzzer kom ceev kev saib xyuas.
