Qhov sib txawv ntawm ib qho multimeter thiab oscilloscope hauv kev ntsuas qhov ntsuas hluav taws xob
Vim yog kev xav tau kev ua haujlwm, kuv tau siv ob qho tib si multimeter thiab oscilloscope thaum soldering circuit boards thiab debugging circuits. Ua kom ncaj ncees, Kuv xav tias kuv muaj sijhawm ntau los siv lub tshuab ntsuas ntau dua li oscilloscope hauv kuv txoj haujlwm niaj hnub. Tshwj tsis yog ib qho teeb meem daws tsis tau nrog lub multimeter, kuv siv oscilloscope los daws nws. Feem ntau, kuv muaj ob hom multimeter ntawm tes, ib qho yog analog pointer hom thiab lwm yam yog digital.
Pointer multimeter
Lub analog pointer multimeter yog qhov txaus ntshai heev hauv qee lub sijhawm tshwj xeeb. Piv txwv li, kuv feem ntau siv lub pointer multimeter los txiav txim seb lub triode tsis muaj npe yog PNP hom lossis hom NPN. Lub sijhawm no, nws yooj yim heev los siv tus pointer multimeter los txiav txim rau pem hauv ntej thiab thim rov qab kev taw qhia ntawm PN kev sib tshuam ntawm triode thiab qib ntawm triode txuas ntxiv; Koj tuaj yeem siv lub pointer multimeter los txiav txim qhov polarity thiab zoo ntawm qhov ntws (D), qhov chaw (S), thiab rooj vag (G) ntawm MOS transistors; Peb siv lub pointer multimeter.
Digital Multimeter
Lub multimeter digital paub txog nws qhov raug siab, nyeem yooj yim ntawm kev ntsuas qhov tseem ceeb, thiab muaj zog tshaj qhov muaj peev xwm. Thaum ntsuas qhov voltage, tam sim no, thiab tsis kam ntawm lub rooj tsav xwm hauv Circuit Court, kuv feem ntau siv lub tshuab digital multimeter. Vim lub tuav haujlwm ntawm lub tshuab digital multimeter thaum ntsuas qhov hluav taws xob thiab tam sim no, nws yooj yim heev rau kev ntsuas kev nyeem ntawv. Yog li ntawd, thaum kho thiab debugging Circuit Court boards, lawv feem ntau ua ke raws li lawv "lub zog".
Lub luag haujlwm tseem ceeb ntawm oscilloscope
Tam sim no, peb tham txog kev ua haujlwm uas multimeter tuaj yeem ua. Tam sim no, cia peb tham txog oscilloscope. Cia peb muab ib qho piv txwv tsis tsim nyog, ib lub multimeter sib npaug rau lub stethoscope uas cov kws kho mob feem ntau nqa thaum lawv mus ntsib. Nws yog qhov yooj yim rau nqa tab sis muaj kev txwv tsis pub muaj zog, xws li ntsuas qhov hluav taws xob, tam sim no, tsis kam, hom transistor, thiab lwm yam; Lub oscilloscope, ntawm qhov tod tes, yog sib npaug rau lub tshuab CT hauv tsev kho mob, nrog cov haujlwm muaj zog uas tuaj yeem kuaj xyuas txhua qhov ntawm tib neeg lub cev, tab sis nws kim heev. Yog li oscilloscope siv los ntawm peb cov kws kho hluav taws xob kho hluav taws xob zoo ib yam li cov cuab yeej no. Hais txog oscilloscope hom, feem ntau muaj ob hom, ib qho yog analog oscilloscope thiab lwm yam yog digital oscilloscope. Lawv qhov tshwj xeeb tshaj yog tias lawv tuaj yeem ntsuas tsis tau qhov voltage thiab tam sim no ntawm lub voj voog, tab sis kuj ntsuas lub waveform, theem, lub sij hawm, zaus, thiab ntau lwm yam tsis zoo ntawm Circuit Court board. Los ntawm qhov kev xav no, oscilloscope's "kev txawj ntse" yog ntau yam.
Tshwj xeeb tshaj yog nyob rau hauv digital circuits, thaum ntes "fleeting" transient signals, lub oscilloscope yog ib tug haib pab, nrog ib tug "capture" lub sij hawm mus txog rau milliseconds thiab ib tug zaus "capture" txog li pua pua megahertz.
