Dab tsi yog qhov txawv ntawm oscilloscope thiab multimeter?
Oscilloscopes thiab multimeters yog cov cuab yeej tseem ceeb rau kev txhim kho txhua hnub thiab kev debugging ntawm cov engineers hluav taws xob. Lub multimeter feem ntau yog siv los ntsuas qhov voltage / tam sim no tus nqi ntawm ib lub sij hawm taw tes, thiab lwm yam, thiab oscilloscope yog siv los kos cov waveform ntawm voltage / tam sim no hloov nrog lub sij hawm. Koj puas paub yuav ua li cas siv ob txoj cai?
Kev ntsuas ntsuas
Yog li yuav ua li cas txiav txim raws li qhov kev xeem twg los xaiv ib qho oscilloscope lossis multimeter los ntsuas? Noj cov capacitor charging thiab discharging txheej txheem ua piv txwv, daim duab schematic yog qhia nyob rau hauv daim duab 1. Siv 5V DC fais fab mov rau lub zog. Thaum S1 raug kaw, lub capacitor nyob hauv lub xeev them nyiaj; Thaum S1 raug rho tawm, lub capacitor nyob rau hauv lub xeev tawm. Qhov zoo tshaj plaws, Daim duab 2 yog qhov kev soj ntsuam ntawm cov nqi them thiab cov pa tawm tawm, qhov twg Ta yog lub sijhawm xav tau rau lub capacitor kom them thiab Tb yog lub sijhawm xav tau rau lub capacitor tawm.
Lub multimeter (DMM6000) thiab oscilloscope (ZDS4054 Plus) ntawm Zhiyuan Electronics tau siv thaum lub sijhawm kuaj. Raws li cov ntaub ntawv qhia, qhov tseeb ntawm multimeter (DMM6000) yog 0.0035 feem pua ntawm kev nyeem ntawv ntxiv rau 0.0007 feem pua ntawm qhov ntau, thiab qhov tseeb ntawm oscilloscope (ZDS4054 Plus) yog 2 feem pua ntawm tag nrho cov nplai.
Los ntawm qhov kev xav ntawm qhov tseeb, qhov tseeb ntawm multimeter yog pom tseeb zoo dua. Txuas lub oscilloscope sojntsuam los yog kev kuaj liab thiab dub coj ntawm lub multimeter mus rau ob qho kawg ntawm lub capacitor los ntsuas qhov voltage thaum lub capacitor tau them tag nrho. Qhov voltage ntsuas los ntawm multimeter yog 2.60922V, thiab qhov voltage ntsuas los ntawm oscilloscope yog 2.68{{10}}}00V (vim hais tias lub DC fais fab mov txuas, lub ncov-rau-peak tus nqi ntawm qhov voltage=tus nqi zoo ntawm qhov voltage). Qhov tseeb ntawm multimeter (DMM6000) yog 0.0035 feem pua ntawm kev nyeem ntawv ntxiv rau 0.0007 feem pua ntawm qhov ntau, uas yog, qhov yuam kev ntau yog ± 0.0001613V; Qhov tseeb ntawm oscilloscope (ZDS4054 Plus) yog 2 feem pua ntawm tag nrho cov nplai, uas yog, qhov yuam kev ntau yog ± 0 ．1600000V.
Yog tias koj yuav tsum tau soj ntsuam cov waveform ntawm voltage hloov nrog lub sij hawm los yog ntsuas lub sij hawm xav tau rau them / tso tawm kom tiav, koj yuav tsum xaiv ib tug oscilloscope. Los ntawm qhov kev xav ntawm lub sijhawm ntev, oscilloscope tuaj yeem nkag siab cov txheej txheem ntawm kev them nyiaj capacitor thiab tawm, thiab tuaj yeem ntsuas lub sijhawm xav tau rau lub capacitor charging / tawm kom tiav los ntawm tus cursor lossis [ ntsuas] muaj nuj nqi. Raws li pom nyob rau hauv daim duab 5, lub sij hawm sawv (ie, lub sij hawm yuav tsum tau ua kom tiav lub capacitor them) yog 9.4307s thiab lub caij nplooj zeeg lub sij hawm (piv txwv li, lub sij hawm yuav tsum tau ua kom tiav lub capacitor tawm) yog 9.6295s los ntawm kev ntsuas tsis siv neeg.
Piv txwv hais tias ib tug multimeter yog siv rau kev ntsuas, qhov hloov voltage tus nqi tsuas yog ntsuas thiab kaw manually ntawm lub sij hawm, thiab thaum kawg lub waveform daim duab kos manually. Los ntawm qhov nce lub sij hawm ntsuas los ntawm oscilloscope, lub sij hawm luv heev. Txawm hais tias ib cov ntaub ntawv yog manually kaw ib ob, lub sij hawm nce tsuas yog sau txog li 9 cov ntaub ntawv, thiab qhov hluav taws xob hloov pauv los ntawm cov ntaub ntawv 9 no tsis muaj qhov tseem ceeb. Piv nrog rau multimeter, qhov piv txwv tam sim no ntawm oscilloscope yog 2MSa / s (2, 000, 000 cov ntsiab lus piv txwv tuaj yeem sau ib ob), uas tsis yog tsuas yog muaj qib siab dua ntawm kev kho dua tshiab, tab sis kuj yog qhov yooj yim dua, uas tuaj yeem txuag tau ntau lub sijhawm thiab cov neeg ua haujlwm.
