Kev tu thiab tu rau Digital Multimeters
1. Cov txheej txheem tu
Digital multimeters muaj qhov rhiab heev thiab raug, thiab lawv cov ntawv thov yuav luag txhua qhov chaw lag luam. Txawm li cas los xij, vim muaj ntau qhov xwm txheej ntawm nws qhov kev ua tsis tiav thiab siab randomness ntawm ntsib teeb meem, tsis muaj ntau txoj cai ua raws. Yog li ntawd, qee qhov kev kho mob tau sau rau hauv kev ua haujlwm tau muab tso ua ke rau kev siv los ntawm cov npoj yaig koom nrog hauv txoj haujlwm no.
Nrhiav qhov txhaum yuav tsum pib nrog sab nraud thiab tom qab ntawd sab hauv, pib nrog qhov yooj yim thiab tom qab ntawd qhov nyuaj, rhuav tshem tag nrho rau hauv me me thiab tsom mus rau kev tawg. Cov txheej txheem tuaj yeem kwv yees faib ua pawg hauv qab no:
1.1 Cov txheej txheem Sensory tso siab rau qhov kev nkag siab ntawm kev nkag siab ncaj qha rau kev txiav txim siab qhov ua txhaum. Los ntawm kev tshuaj xyuas qhov muag, nws tuaj yeem kuaj pom cov teeb meem 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 ci warping thiab tawg ntawm cov ntawv luam tawm, thiab lwm yam; Koj tuaj yeem kov qhov kub thiab txias ntawm cov roj teeb, cov resistors, transistors, thiab cov blocks sib xyaw, thiab xa mus rau lawv 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 tau ruaj khov, thiab seb qhov hloov pauv hloov puas yog jammed; Koj tuaj yeem hnov thiab hnov cov suab txawv txawv lossis tsw ntxhiab.
1.2 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 kev khiav hauj lwm voltage, siv voltage, thiab lwm yam ntawm A / D converter.
1.3 Txoj kev luv luv Circuit Court feem ntau yog siv rau hauv kev tshuaj xyuas ntawm A / D converters tau hais ua ntej, thiab txoj kev no feem ntau siv hauv kev kho thiab cov twj siv hluav taws xob micro.
1.4 Txoj kev rhuav tshem Circuit Court cuam tshuam qhov tsis txaus ntseeg ntawm tag nrho lub tshuab lossis chav tsev hauv Circuit Court. 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.
Thaum qhov kev ua txhaum tau nqaim mus rau qee yam lossis ntau yam, nws tuaj yeem ntsuas hauv online lossis offline siv 1.5 tivthaiv kev ntsuas. Yog tias tsim nyog, hloov nrog cov khoom zoo. Yog tias qhov txhaum ploj mus, nws qhia tau hais tias cov khoom puas lawm.
2. Kev tu
Ib qho digital multimeter yog qhov ntsuas qhov tseeb, tsis txhob hloov lub voj voog ntawm qhov xav tau, thiab xyuam xim rau cov ntsiab lus hauv qab no:
2.1 Tsis txhob txuas rau qhov hluav taws xob siab tshaj 1000V DC lossis 700V AC RMS
2.2 Tsis txhob txuas qhov hluav taws xob qhov hluav taws xob thaum lub luag haujlwm hloov pauv hauv Ω thiab txoj haujlwm
2.3 Tsis txhob siv lub ntsuas ntsuas no thaum lub roj teeb tsis raug teeb tsa lossis lub hau rov qab tsis nruj
