Lub multimeter tsis tuaj yeem kuaj kab.
Cov digital multimeter buzzer tuaj yeem siv los ntsuas qhov kev ua ntawm cov xov hlau. Ob qhov kev sojntsuam kov ob qhov kawg ntawm cov xov hlau. Yog tias koj hnov ib lub suab "beep", lub xaim yog nyob, thiab tsis muaj lub suab qhia tias cov xaim tawm. Thov xa mus rau cov kauj ruam hauv qab no kom paub meej.
1. Nrhiav ib lub tshuab multimeter, ntxig lub xov tooj liab rau hauv "voltage/resistance/diode/on-off buzzer measuring terminal" interface ntawm lub multimeter, thiab ntxig cov dub sojntsuam mus rau hauv "hom ntsuas davhlau ya nyob twg" interface.
2. Nias lub hwj chim khawm (uas yog, lub hwj chim khawm) ntawm lub multimeter pib lub tshuab, thiab nias lub khawm tuav los xyuas qhov hloov thiab tuav txoj haujlwm ntawm tus yuam sij no. Tom qab ntawd tig lub pob qhov loj nyob rau hauv nruab nrab ntawm lub multimeter los kuaj seb qhov kev hloov pauv ua haujlwm zoo li cas.
3. Tom qab kev pom zoo, kho qhov chaw ntawm lub pob qhov rooj loj rau lub buzzer diode iav.
4. Kov tus cwj mem liab nrog tus cwj mem dub. Yog tias nws yog buzzer, koj tuaj yeem hnov cov buzzer. Yog tias koj tsis hnov cov buzzer, xyuas seb lub stylus puas ntsaws los yog puas lawm. Yog tias daim tshev tsis yog teeb meem stylus, nws txhais tau hais tias nws yog nyob rau hauv "diode gear" nyob rau lub sijhawm no. Nias lub khawm tuav kom hloov txoj haujlwm mus rau "buzzer iav".
5. Tom qab ntawd kov cov kev sojntsuam liab thiab cov tshuaj ntsuam dub ntawm lub multimeter nrog rau ob qhov kawg ntawm cov hlau raws li. Yog tias koj hnov cov buzzer, koj tuaj yeem txiav txim siab tias cov hlau yog conductive, txwv tsis pub nws yuav tsis ua haujlwm.
Dab tsi iav siv lub multimeter los xyuas seb cov kab tsis tuaj yeem hla, thiab tus lej yog qhov qub.
Thaum ntsuas seb txoj kab txuas los yog txiav nrog lub tshuab multimeter, nws yog ib qho tsim nyog los xaiv cov iav raws li cov kab uas raug ntsuas. Piv txwv li, txhawm rau ntsuas seb txoj kab puas raug thaiv thaum lub teeb pom kev tsis zoo, koj tuaj yeem tshawb xyuas seb cov khoom siv hluav taws xob puas zoo li qub nrog cov ntaub ntawv hluav taws xob siab tshaj 250V V. Yog tias qhov ntsuas hluav taws xob ntawm lub zog hluav taws xob tig rau lossis tawm ntawm lub teeb pom kev zoo tseem nyob. tsis hloov, nws paub tseeb tias muaj ib yam dab tsi tsis ncaj ncees lawm nrog cov teeb pom kev zoo lossis lub teeb pom kev zoo. Yog tias qhov hluav taws xob hloov pauv, koj tuaj yeem txiav txim siab tias cov kab hluav taws xob tsis raug. Yog tias nws yooj yim los ntsuas seb puas yog ib feem ntawm cov hlau tawg hauv nruab nrab, koj tuaj yeem siv txoj haujlwm hloov hauv daim duab kom tig lub iav thib ob counterclockwise, uas yog, ntsuas diode thiab "on-off" iav, uas yog. ib lub iav tshwj xeeb rau kev ntsuas lub on-off ntawm cov khoom siv hluav taws xob dav dav thiab qhov zoo ntawm cov diodes nrog digital multimeter. Thaum qhov kev tawm tsam ntawm qhov ntsuas qhov ntsuas ntawm cov iav no me me (feem ntau tsawg dua 200Ω lossis ntsuas qhov kev tiv thaiv pem hauv ntej ntawm diodes), nws yuav ncaj qha muab lub suab nrawm nrawm. Yog tias qhov kev tawm tsam ntawm qhov kev sojntsuam loj (muaj qhov tawg lossis lub diode nyob rau hauv kev sib txuas rov qab), tsis muaj suab yuav raug tsim tawm. Yog tias muaj lub suab sib cuam tshuam hauv txoj kab sib txuas thaum ntsuas, nws txhais tau hais tias muaj kev sib cuag tsis zoo nyob rau hauv qhov co thiab kab yuav tawg. Ua tib zoo saib xyuas kev siv cov kev tiv thaiv los ntsuas lub iav txoj hauj lwm, thiab lub hwj huam mov yuav tsum raug txiav.
