Kev tshuaj xyuas ua ntej ntsuas nrog lub multimeter
Multimeter yog ib qho khoom siv ntau yam thiab ntau yam ntsuas uas yog qhov tseem ceeb hauv kev siv tshuab hluav taws xob thiab hluav taws xob. Ib qho kev ntsuas dav dav tuaj yeem ntsuas DC tam sim no, DC voltage, AC tam sim no, AC voltage, tsis kam, thiab qib suab, thiab qee qhov kuj tuaj yeem ntsuas qhov capacitance, inductance, thiab qee qhov tsis sib xws ntawm semiconductors (xws li ). Yog tias qhov sib txawv yooj yim los ntawm kev tso saib, multimeters tuaj yeem muab faib ua pointer multimeters thiab digital multimeters.
Peb lub luag haujlwm tseem ceeb ntawm multimeter yog ntsuas qhov ua haujlwm, voltage, thiab tam sim no, yog li cov neeg laus hu ua multimeter. Niaj hnub no, multimeter tau ntxiv ntau txoj haujlwm tshiab, tshwj xeeb tshaj yog digital multimeter, xws li ntsuas lub peev xwm, transistor amplification, diode voltage poob, thiab lwm yam. Kuj tseem muaj kev hais lus digital multimeter uas tuaj yeem tshaj tawm qhov ntsuas ntsuas hauv hom lus.
Cov kauj ruam ua haujlwm
Xyuas seb qhov hluav taws xob thiab lub zog tsim hluav taws xob ntawm lub roj teeb puas zoo li qub, thiab seb lub roj teeb lub taub hau puas muaj xeb heev. Ntau tus tswv tsheb xav tias qhov tshwm sim ntawm cov dej xau yog teeb meem roj teeb lossis teeb meem lub tshuab hluav taws xob;
Nug tus tswv lub tsheb yog tias tau muaj kev kho tshiab, ntxiv, lossis kev sib tsoo kev sib tsoo;
Tshem tawm cov ncej tsis zoo ntawm lub roj teeb, teeb lub multimeter mus rau qhov tam sim no * ntau yam, txuas cov hlau lead liab mus rau qhov tsis zoo, thiab siv cov hlau lead dub.
Txuas tus cwj mem rau lub roj teeb pawg lub taub hau thiab ruaj ntseg;
Tshem tawm tag nrho cov khoom siv hluav taws xob sab hauv thiab sab nraud ntawm lub tsheb, kaw lub qhov rooj, saib xyuas qib tam sim no, kho kom haum rau cov iav uas tsim nyog, thiab sau cia;
Tos li 20 feeb; Tom qab tag nrho cov modules ntawm lub tsheb nkag mus rau hom pw tsaug zog, nyeem qhov tseeb static paug tam sim no;
Qhov tam sim no zoo li qub feem ntau yog 0.03A (piv txwv li 30mA), thov mus saib phau ntawv saib xyuas kom paub meej, thiab nws yuav tsum tsis pub tshaj 50mA;
Yog tias qhov hluav taws xob zoo li qub siab dhau lawm, peb tuaj yeem tshawb xyuas nws los ntawm kev rub tawm cov fuses thiab relays ib qho los ntawm ib qho, saib qhov loj ntawm qhov tam sim no zoo li qub;
Kev ntsuas ntsuas ua ntej
Saib xyuas yog tias rab koob multimeter teem rau {{0}}. Yog tias nws tsis nyob hauv 0 txoj hauj lwm, tig lub xoom hloov ntsia hlau los teeb rau 0 txoj hauj lwm.
Tshawb xyuas qhov ncaj ncees ntawm ob qhov kev sojntsuam thiab cov coj. Qhov no yog qhov tseem ceeb tshwj xeeb rau kev ntsuas qhov siab AC voltages los tiv thaiv kev sib tsoo hluav taws xob.
Tshawb xyuas cov hlau lead, thiab yog tias muaj qhov xoob, sim ua kom nruj. Qee zaum kev xoob yog tshwm sim los ntawm kev xoob ntawm cov txiv ntoo fastening ntawm lub qhov (socket), thiab lub sijhawm no, lub rooj saib xyuas yuav tsum tau txuas nrog kev kho.
