Diode iav lossis iav tiv thaiv tuaj yeem siv tau. Yog tias siv lub diode iav, siv lub ntsuas ntsuas ntsuas qhov taw tes ntsuas. Yog hais tias lub Circuit Court board yog luv luv, nws yuav beep. Yog hais tias ib co multimeters muaj qhov taw qhia teeb rau, los yog cov iav tsis kam, yog tias nws yog luv luv Circuit Court, cov zaub ntawm lub multimeter yog xoom.
1. Multimeter, tseem hu ua multiplex meter, multimeter, peb-meter, multimeter, thiab lwm yam, yog ib qho tseem ceeb ntsuas ntsuas nyob rau hauv lub hwj chim electronics thiab lwm yam departments. Feem ntau, nws yog siv los ntsuas qhov voltage, tam sim no thiab tsis kam. Multimeter yog ib qho khoom siv ntau yam, ntau qhov ntsuas ntsuas. Feem ntau, multimeter tuaj yeem ntsuas DC tam sim no, DC voltage, AC tam sim no, AC voltage, tsis kam thiab suab qib, thiab lwm yam, thiab qee qhov kuj tuaj yeem ntsuas AC tam sim no capacitance, inductance thiab semiconductor. ib co tsis thiab lwm yam Multimeters muab faib ua pointer multimeters thiab digital multimeters raws li hom zaub.
2. Kev ntsuas qhov hluav taws xob DC: Ua ntej, ntxig cov xim dub coj mus rau hauv lub qhov "com", thiab cov hlau kuaj liab rau hauv "V Ω". Tus nqi tuaj yeem nyeem ncaj qha los ntawm lub vijtsam zaub. Yog tias nws tshwm sim raws li "1.", nws txhais tau hais tias qhov ntau me me dhau lawm, ces qhov ntau yuav tsum tau nce ntxiv ua ntej ntsuas cov khoom siv hluav taws xob. Xaiv lub pob qhov rooj rau ntau qhov loj dua li qhov kwv yees (ceeb toom: qhov tseem ceeb ntawm lub xov tooj yog qhov siab tshaj plaws, "V-" txhais tau tias DC voltage ntau, "V ~" txhais tau tias AC voltage ntau, "A" yog qhov tam sim no), tom qab ntawd teeb tsa Cov kev xeem coj mus txuas nrog lub hwj chim lossis ob qho kawg ntawm lub hwj chim; khaws kev sib cuag ruaj khov. Yog tias "-" tshwm nyob rau sab laug ntawm tus nqi, nws txhais tau hais tias qhov polarity ntawm qhov kev xeem cov hlau lead yog qhov txawv ntawm qhov tseeb ntawm cov khoom siv fais fab. Lub sijhawm no, cov hlau kuaj liab txuas nrog rau tus ncej tsis zoo.
3. Kev ntsuas ntawm AC voltage: qhov ntsuas tus cwj mem yog tib yam li qhov ntsuas ntawm DC voltage, tab sis lub pob qhov rooj yuav tsum tig mus rau qhov xav tau ntawm AC iav "V~". Tsis muaj qhov zoo lossis qhov tsis zoo AC voltage, thiab txoj kev ntsuas yog tib yam li yav dhau los. Txawm hais tias ntsuas AC lossis DC voltage, xyuam xim rau kev nyab xeeb ntawm tus kheej thiab tsis txhob kov cov hlau ntawm tus cwj mem nrog koj txhais tes.
4. Kev ntsuas tsis kam: tig qhov hloov pauv mus rau qhov tsim nyog ntawm Ω, ntxig cov hlau kuaj liab rau hauv V / Ω qhov, thiab cov xim dub coj mus rau hauv lub qhov COM. Yog tias qhov ntsuas qhov ntsuas tsis zoo tshaj tus nqi siab tshaj plaws ntawm qhov kev xaiv, lub multimeter yuav tso saib .1. Lub sijhawm no, yuav tsum xaiv qhov ntau dua. Thaum ntsuas qhov tsis kam, cov hlau kuaj liab yog qhov zoo electrode, thiab cov hlau kuaj dub yog qhov tsis zoo electrode, uas yog qhov txawv ntawm pointer type multimeter. Yog li ntawd, thaum ntsuas cov khoom nrog polarity xws li transistors thiab electrolytic capacitors, koj yuav tsum tau them sai sai rau qhov polarity ntawm kev xeem coj.
5. Siv multimeter los ntsuas qhov tam sim no: ua ntej xaiv qhov ntau, qhov multimeter's DC tam sim no cov ntaub ntawv raug cim nrog "mA" thiab muaj peb qhov ntau ntawm 1mA, 10mA, thiab 100mA. Kev xaiv ntawm qhov ntau yuav tsum yog nyob ntawm qhov tam sim no hauv Circuit Court. Tom qab ntawd lub multimeter yuav tsum tau txuas nrog rau hauv series nrog lub Circuit Court nyob rau hauv kev sim. Tom qab qhov sib thooj ntawm lub Circuit Court yuav tsum raug txiav, txuas lub multimeter test coj mus rau ob qhov kawg ntawm lub breakpoint. Qhov kev nyeem ntawv kawg kawg, qhov ntsuas kab ntawm DC cov ntaub ntawv tam sim no tseem yog kab thib ob. Piv txwv li, thaum xaiv cov ntaub ntawv 100mA, cov kab thib peb tuaj yeem siv tau, thiab kev nyeem ntawv tuaj yeem muab faib ua 10.
6. Siv lub multimeter los ntsuas capacitance: qee qhov digital multimeters muaj kev ua haujlwm ntawm kev ntsuas capacitance, thiab lawv qhov sib txawv tau muab faib ua tsib yam: 2000p, 20n, 200n, 2μ thiab 20μ. Thaum ntsuas, ob lub pins ntawm lub tso tawm capacitor tuaj yeem tso ncaj qha rau hauv Cx jack ntawm lub ntsuas ntsuas, thiab cov ntaub ntawv tso tawm tuaj yeem nyeem tom qab xaiv qhov tsim nyog.
