Siv multimeter los ntsuas luv luv Circuit Court thiab qhib Circuit Court nrog on-off iav los yog tsis kam iav.
On-off iav tseem hu ua buzzer iav. Nyob rau hauv cov iav no, yog tias tus nqi ntawm qhov kev sim kab yog qis dua ib qho nqi (Kuv tsis nco qab ntau npaum li cas, thiab muaj cov lus piav qhia ntxaws ntxaws hauv phau ntawv qhia), lub buzzer yuav suab.
Siv cov digital multimeter ua piv txwv. Nws zoo nkaus li tias lub buzzer tuaj yeem ntsuas qhov tsis kam ntawm 2 kiloohms feem ntau.
Piv txwv li, thaum ntsuas cov kab ntshiab (xws li 100-meter coil ntawm hlau), cov hlau yuav nrov tsis tawg.
Lwm qhov piv txwv yog ib feem ntawm kab, uas qee cov ntsiab lus resistive (xws li coils thiab lub cev muaj zog windings) tuaj yeem txuas nrog hauv series, lossis kab ntev heev thiab muaj ntau qhov kev sib txuas. Thaum ntsuas cov iav no, nws yuav tsis beep, tab sis nws yuav qhia tus nqi, uas yog qhov kev tiv thaiv ntawm kab no, tab sis nws tsis tuaj yeem piav qhia tag nrho tias kab no qhib.
Piv txwv li, yog tias koj xaiv ib qho zoo AC contactor coil ntawm random thiab ntsuas ob qhov kawg ntawm lub kauj nrog lub buzzer, nws yuav tsis chirp, tab sis nws yuav tso saib tus nqi (xav tias nws yog 758); Yog tias koj ntsuas nws dua nrog qhov tsis kam ntawm 2 kiloohms, qhov ntsuas tus nqi tseem yog 758, uas yog, qhov ua haujlwm ntawm lub kauj yog 758 ohms. Lub sijhawm no, koj tsis tuaj yeem hais tias lub kauj yog qhib. Yog tias lub kauj qhib, qhov taw qhia yuav yog xoom thiab yuav tsis muaj chirping.
Yog hais tias koj tsis hu thiab qhia tus xov tooj, nruj me ntsis hais lus, nws tseem tsis tuaj yeem hais tias kab no qhib. Vim hais tias raws li tau hais los saum no, qhov siab tshaj plaws ntawm cov iav no tsuas yog ntsuas ntawm 2 kiloohms. Yog li nws muaj peev xwm hais tias qhov kev tiv thaiv ntawm cov kab no siab dua 2 kiloohms, yog li koj tuaj yeem hloov mus rau lub zog siab dua thiab sim dua.
Hauv kev xyaum, feem ntau tsis tas yuav delve rau hauv qhov no. Piv txwv li, ib tug 100-meter coil ntawm hlau hais saum toj no, yog hais tias nws tsis buzz thaum ntsuas nrog ib tug buzzer, nws yeej yuav txiav txim tau hais tias lub kauj yog tsis nyob rau hauv kab.
Lwm qhov piv txwv yog kom paub tias qhov winding ntawm lub cev muaj zog yuav tsum ntsuas. Ua ntej kev ntsuas, muaj ntau ntau hauv kuv lub siab uas kuv tsis hu thaum kuv ntsuas nrog lub buzzer. Txhawm rau kom ntseeg tau qhov tseeb, kuv yuav tsum hloov mus rau lub iav loj dua thiab ntsuas nws dua.
Txawm li cas los xij, qhov kuv tus kheej xav tias yuav tsum tau them nyiaj rau yog: 1. Lub buzzer tsuas tuaj yeem ntsuas qhov tsis kam qis dua 2 txhiab ohms; Tsuas yog thaum tus nqi tiv thaiv tiag tiag qis dua li tus nqi teev nws yuav hu nkauj. Nco ntsoov qhov no, thiab tom qab ntawd kwv yees qhov tseeb ntawm qhov ntsuas tau raws li qhov xwm txheej tiag tiag. Los yog twv seb lub iav ntsuas qhov zoo tshaj plaws raws li qhov xwm txheej tiag tiag.
