Yuav Ua Li Cas Xaiv Lub Computer Fais Fab nrog Multimeter
Niaj hnub no, lub cim tshiab ntawm daim npav graphics, suab phaib, optical drives, hard drives thiab lwm yam khoom siv tsis yog roj -ntau npaum li cas ntawm kev siv hluav taws xob. Koj puas tau xav txog muab nws lub siab muaj zog thaum koj tau ntim koj lub tshuab kev hlub thoob plaws koj lub taub hau.
Muaj ntau qhov kev sib tham txog kev txheeb xyuas cov khoom siv hluav taws xob hauv ntau cov ntawv xov xwm thiab cov ntawv xov xwm, uas tuaj yeem muab faib ua peb yam: ua ntej, xyuas seb cov khoom siv hluav taws xob puas zoo heev, seb qhov kev ua haujlwm zoo li cas, thiab seb qhov kev teeb tsa puas tsim nyog. Ua kom ncaj ncees, txoj kev npaj no nyuaj rau lwm tus. Ua ntej, nws xav kom cov neeg siv kom muaj kev paub txog hluav taws xob txaus; Qhov thib ob, txhawm rau txhawm rau tshuaj xyuas tsib lub cev thiab rau lub ntsws ntawm lub tshuab hluav taws xob, nws yog ib qho tsim nyog yuav tsum tshem tawm lub hwj chim npog npog, uas ua rau tsis muaj kev lav phib xaub ntawm cov tub lag luam. Thaum lub foob tawg lawm, tus neeg ua lag luam qhov kev lees paub yuav poob, thiab txawm tias muaj teeb meem nrog lub hwj chim, DIY yog qhov tsim nyog. Kuv xav tias muaj ntau tus rookies zoo tib yam raug yuam los ua cws loj hauv qhov kev xav tau thiab tsis muaj kev pab.
Qhov thib ob kov - yog hais txog kev kov seb cov cua tshuab tawm los ntawm lub zog kiv cua kub thiab seb lub hau npog puas kub rau qhov kov tom qab tig rau lub sijhawm.
Peb Smells - Ntsws txawm tias lub hwj huam mov tso tawm cov ntxhiab tsw qab tom qab ua haujlwm ntev. Ob qhov tom kawg no yog kev sib sau ua ke ntawm kev paub txog kev paub, yuav ua li cas cov neeg pib txiav txim siab yam tsis muaj kev paub dhau los?
Ntawm no, kuv pom zoo ib txoj kev siv lub multimeter los txiav txim qhov zoo ntawm lub hwj chim mov, uas yuav muab tau ib co kev pab rau beginners. Ua ntej, ntawm chav kawm, nws yog ib qho tsim nyog yuav tsum nrhiav ib lub multimeter (zoo dua yog ib qho digital) thiab siv tau. Qhov voltage muab los ntawm aTX fais fab mov feem ntau suav nrog 3.3V, 5.0V, thiab 12.0V. Ntawm lawv, 12.0V yog lub zog tseem ceeb rau kev tsav tsheb cov khoom siv kho mob, thiab qhov kev hloov pauv tseem ceeb heev tom qab sib txuas ntau dua. Yog li ntawd, tom qab txuas tag nrho cov loads ntawm lub computer, xaiv ib lub taub hau tso zis thiab ntxig cov dub sojntsuam mus rau hauv lub dub xaim interface thiab lub liab sojntsuam mus rau hauv lub daj hlau interface (los ntes 12V tso zis voltage). Tom qab txuas tag nrho cov connectors, koj tuaj yeem pib lub tshuab rau kev sim.
Tom qab booting, peb tuaj yeem pom tias cov ntaub ntawv multimeter hloov tas li kom txog thaum lub kaw lus pib tag nrho thiab ruaj khov. Sau tus nqi voltage ntawm lub sijhawm no. Nquag, nws yuav tsum nyob ib ncig ntawm 12V (kwv yees li ntawm 11.95V thiab 12.15V. Yog tias nws qis dhau, nws tsis tuaj yeem lav ntev - lub sijhawm ua haujlwm ruaj khov ntawm cov khoom loj thiab tsis muaj peev xwm nthuav dav. Yog tias nws siab dhau, nws yuav ua rau lub cuab yeej kub thiab muaj hnub nyoog ntxov). Tom qab ntawd nias tus yuam sij reSET kom rov pib lub tshuab. Hauv qhov no, nws yog ib qho tseem ceeb uas yuav tsum tau saib xyuas cov kev hloov pauv ntawm tus nqi ntawm multimeter. Thaum lub hwj chim ntawm tus kheej - xeem, tus nqi multimeter yuav ncav cuag nws qhov qis tshaj plaws. Sau tus nqi tam sim no. Yog hais tias qhov sib txawv voltage ntawm qhov siab thiab qis qhov tseem ceeb tsis loj heev (hauv 0.3V), ces qhov kev siv fais fab no tau txais. Yog tias qhov sib txawv ntawm qhov siab loj dhau lawm, nws qhia tau hais tias cov khoom siv hluav taws xob tsis zoo thiab yuav tsum tsis txhob xaiv. Kuv tus kheej tau ntsib 300W fais fab mov uas muaj tus nqi siab ntawm 12.32V thiab tus nqi qis tsuas yog 11.73V, thiab nquag sib tsoo thaum siv.
