Lub diode teeb tsa ntawm multimeter tuaj yeem teeb lub diode?
Muaj ib qho kev teeb tsa diode ntawm lub multimeter uas tuaj yeem siv los ntes diodes thiab teeb lawv. Tab sis teeb pom kev zoo tsis yog qhov tseeb, feem ntau yog vim li cas ob qho:
1) Lub diode ntau ntawm lub multimeter muaj qhov tsis tshua muaj hluav taws xob;
2) Lub zog ua haujlwm ntawm lub teeb-emitting diodes yog qhov siab.
Qhov voltage ntawm diode nplai ntawm lub multimeter feem ntau yog nyob ib ncig ntawm 3V. Qhov hluav taws xob no tuaj yeem teeb lub teeb pom kev zoo tib yam-emitting diode. Thaum ntsuas qhov zoo ntawm diode, koj tuaj yeem siv qhov kev sim liab coj los kov qhov zoo electrode ntawm LED, thiab qhov kev sim dub ua rau qhov tsis zoo electrode ntawm LED. Koj tuaj yeem txiav txim siab thaum lub teeb ci LED. LEDs yog qhov zoo. Txawm li cas los xij, qhov tso zis hluav taws xob ntawm qee qhov ntsuas qis dhau los teeb lub LED lossis tuaj yeem teeb nws me ntsis. Kuv tau siv ib qho pheej yig multimeter los ntawm Unilid ua ntej, tab sis nws tsis tuaj yeem teeb lub LED. Cov kev teeb tsa diode yeej tsis muaj txiaj ntsig, uas tsis yooj yim heev.
LED yog ib qho tshwj xeeb diode nrog rau pem hauv ntej voltage poob, thiab qhov parameter no txawv heev. LEDs ntawm cov xim sib txawv muaj qhov sib txawv conduction voltage tee. Feem ntau hais lus, qhov conduction voltage poob ntawm lub teeb liab-emitting diodes yog qhov tsawg tshaj plaws, kwv yees li ntawm (1.5-2)V; lub ntsuab yog thib ob, nyob ib ncig ntawm (1.8-2.5)V; thiab lub xiav hluav taws xob poob yog qhov siab tshaj plaws, nyob rau hauv thaj tsam ntawm (2) -3.5)V los yog li ntawd. Yog li ntawd, thaum tib lub moos ntsuas LEDs ntawm cov xim sib txawv, lawv qhov ci ci txawv. Feem ntau, liab yog qhov ci tshaj plaws thiab xiav yog qhov tsaus tshaj plaws. Txawm tias qee cov xim tsis tuaj yeem teeb.
