Kho Cov Txheej Txheem thiab Cov Txheej Txheem rau Digital Multimeters (Technical Tips)
Kho txoj kev
Nrhiav qhov txhaum yuav tsum pib los ntawm sab nraud thiab tom qab ntawd los ntawm sab hauv, los ntawm qhov yooj yim mus rau qhov nyuaj, rhuav tshem lawv mus rau hauv qhov me me, thiab tsom mus rau kev tawg. Cov txheej txheem tuaj yeem kwv yees faib ua cov hauv qab no:
1. Cov txheej txheem kev hnov lus ncaj qha txiav txim rau qhov ua rau lub cev tsis ua haujlwm raws li qhov xav tau. Los ntawm kev tshuaj xyuas qhov muag, nws tuaj yeem pom tias muaj qhov tsis zoo xws li cov xov hlau tawg, desoldering, luv Circuit Court hauv av, tawg fuse hlab, cov khoom siv hluav taws xob, kev puas tsuaj rau cov khoom siv, tooj liab ntawv nyiaj nqa thiab tawg ntawm cov ntawv luam tawm, thiab lwm yam; Koj tuaj yeem kov qhov kub thiab txias ntawm lub roj teeb, resistor, transistor, thiab kev sib xyaw ua ke, thiab xa mus rau daim duab kos duab los txheeb xyuas qhov ua rau qhov kub tsis zoo. Tsis tas li ntawd, koj tuaj yeem tshawb xyuas los ntawm txhais tes seb cov khoom puas yog xoob, seb cov pins sib xyaw ua ke puas ruaj ntseg, thiab seb qhov hloov pauv hloov yog daig; Koj tuaj yeem hnov thiab hnov cov suab txawv txawv lossis tsw ntxhiab.
2. Txoj kev ntsuas qhov ntsuas hluav taws xob ntsuas seb qhov ua haujlwm voltage ntawm txhua qhov tseem ceeb yog qhov qub, uas tuaj yeem txheeb xyuas qhov ua txhaum ntawm qhov taw tes sai. Ntsuas qhov ua haujlwm voltage thiab siv voltage ntawm A / D converter.
3. Txoj kev luv luv Circuit Court feem ntau yog siv rau hauv kev tshuaj xyuas ntawm A / D converters tau hais ua ntej, uas feem ntau siv los kho cov cuab yeej hluav taws xob tsis muaj zog thiab micro.
4. Cov txheej txheem Circuit Court breaker cuam tshuam qhov tsis txaus ntseeg los ntawm tag nrho lub tshuab lossis lub tshuab hluav taws xob. Yog hais tias qhov txhaum ploj mus, nws qhia tau hais tias qhov txhaum yog nyob rau hauv lub disconnected Circuit Court. Txoj kev no yog qhov tsim nyog rau cov xwm txheej uas muaj luv luv hauv Circuit Court.
5. Thaum qhov txhaum tau nqaim mus rau ib qho chaw lossis ob peb yam, kev ntsuas hauv online lossis offline tuaj yeem ua tau. Yog tias tsim nyog, hloov nrog cov khoom zoo. Yog tias qhov txhaum ploj mus, nws qhia tau tias cov khoom puas lawm.
6. Kev cuam tshuam txoj kev siv tib neeg induced voltage raws li kev cuam tshuam teeb liab los soj ntsuam cov kev hloov nyob rau hauv LCD zaub, feem ntau siv los xyuas seb lub input Circuit Court thiab cov zaub ib feem puas lawm.
Kho cov txheej txheem
Rau cov cuab yeej faulty, thawj kauj ruam yog los xyuas thiab paub qhov txawv ntawm qhov tshwm sim txhaum cai (tag nrho cov haujlwm tsis tuaj yeem ntsuas) lossis tus kheej (tus kheej lub luag haujlwm lossis ntau yam), thiab tom qab ntawd paub qhov txawv ntawm qhov xwm txheej thiab daws nws raws li.
Yog tias txhua lub zog tsis tuaj yeem ua haujlwm, lub hwj huam mov Circuit Court thiab A / D converter circuit yuav tsum tau ua tib zoo xyuas. Thaum kuaj xyuas cov khoom siv hluav taws xob, tshem cov roj teeb uas sib dhos, nias lub hwj huam hloov, txuas qhov zoo sojntsuam mus rau qhov tsis zoo ntawm lub ntsuas hluav taws xob ntsuas hluav taws xob, thiab txuas cov kev sojntsuam tsis zoo mus rau sab zoo ntawm lub hwj chim (rau digital multimeter) . Tig qhov hloov mus rau qhov ntsuas txoj hauj lwm ntawm lub diode. Yog hais tias cov zaub qhia qhov zoo voltage ntawm lub diode, nws qhia tau hais tias lub hwj chim mov yog zoo. Yog tias qhov sib txawv loj, nws qhia tau hais tias muaj teeb meem nrog cov khoom siv hluav taws xob. Yog tias muaj qhov qhib Circuit Court, tsom mus rau kev kuaj xyuas lub hwj chim hloov thiab cov roj teeb coj. Yog hais tias muaj ib tug luv luv Circuit Court, nws yuav tsum tau siv lub Circuit Court breaker txoj kev maj mam disconnect lub Cheebtsam uas siv lub hwj chim mov, thiab tsom mus xyuas lub lag luam amplifier, timer, thiab A / D converter. Yog hais tias ib tug luv luv Circuit Court tshwm sim, nws feem ntau puas ntau tshaj ib tug integrated tivthaiv. Lub A / D converter tuaj yeem tshawb xyuas ib txhij nrog lub ntsuas qhov yooj yim, uas yog sib npaug rau DC meter taub hau ntawm analog multimeter.
