Lub multimeter diode iav teeb lub diode?
Muaj ib lub diode iav ntawm lub multimeter, uas tuaj yeem siv los ntsuas lub diode thiab teeb lub diode. Tab sis teeb pom kev zoo tsis yog qhov tseeb, muaj ob lub laj thawj tseem ceeb: 1) lub diode iav voltage ntawm multimeter yog tsawg; 2) Lub zog ua haujlwm ntawm LED yog siab.
Qhov voltage ntawm lub diode iav ntawm lub multimeter feem ntau yog hais txog 3V, uas tuaj yeem teeb pom kev zoo tib yam lub teeb-emitting diodes. Thaum ntsuas qhov zoo ntawm lub diode, koj tuaj yeem tiv tauj qhov zoo electrode ntawm LED nrog lub stylus liab, thiab txuas cov dub stylus nrog rau qhov tsis zoo electrode ntawm LED. Thaum lub LED qhib, koj tuaj yeem txiav txim siab tias LED yog qhov zoo. Txawm li cas los xij, qee qhov ntsuas tsis tuaj yeem teeb lub LED lossis tsuas tuaj yeem teeb nws me ntsis thaum cov zis hluav taws xob tsawg. Kuv tau siv lub tshuab hluav taws xob pheej yig dua ntawm Youlide ua ntej, yog li kuv tsis tuaj yeem teeb lub LED, thiab cov iav diode yeej tsis muaj txiaj ntsig, uas tsis yooj yim heev.
LED yog ib hom tshwj xeeb ntawm diode nrog rau pem hauv ntej tig-on voltage poob, thiab qhov parameter no txawv heev. Qhov tig-on voltage poob ntawm LEDs nrog cov xim sib txawv yog txawv. Feem ntau hais lus, tig-on voltage poob ntawm liab LED yog qhov tsawg tshaj plaws, uas yog hais txog (1.5-2) V; Ntsuab yog tom ntej no, ib ncig (1.8-2.5)V; Lub siab poob rau hauv xiav yog qhov siab tshaj plaws, txog (2-3.5) V. Yog li ntawd, qhov ci ntawm tib lub moos sib txawv thaum ntsuas LEDs ntawm cov xim sib txawv. Feem ntau, liab yog qhov ci tshaj plaws thiab xiav yog qhov tsaus tshaj plaws. Txawm qee cov xim tsis tuaj yeem teeb.
Cov teeb meem xav tau kev saib xyuas hauv kev yuav khoom thiab siv multimeter
Qhov thiaj li hu ua pointer multimeter, uas yog, siv lub pointer viav vias lub kaum sab xis los tso saib tus nqi sib xws. Tam sim no, muaj ob peb lub khw hauv pointer multimeter, thiab qhov classic tshaj plaws yog MF47 pointer multimeter, uas yog nrov ntawm cov neeg. Pointer multimeter siv lub pointer los qhia qhov taw qhia. Txawm hais tias kev nyeem ntawv tsis yooj yim heev, nws tuaj yeem txiav txim siab qhov zoo ntawm cov khoom raws li lub kaum sab xis ntawm lub pointer.
digimer
Lub npe hu ua digital multimeter, uas yog, nrog lub vijtsam LCD, tuaj yeem tso saib cov lej ncaj qha. Digital multimeter yog cov cuab yeej tseem ceeb tam sim no, uas yooj yim dua los nyeem thiab txawj ntse dua. Ntau qhov txiaj ntsig ntawm qhov hluav taws xob, tam sim no thiab tsis kam yog ncaj qha tso tawm ntawm nws lub vijtsam LCD, uas yog qhov tseeb ntawm ib nrais muag. Thiab qee qhov digital multimeters tuaj yeem xaiv qhov ntau yam tsis muaj qhov txawv txav.
