Koj puas tuaj yeem teeb lub diode hauv diode txoj haujlwm ntawm multimeter?
Muaj ib lub diode iav ntawm lub multimeter uas tuaj yeem siv los ntes diodes thiab teeb lawv. Tab sis teeb pom kev zoo tsis yog qhov tseeb, muaj ob lub laj thawj tseem ceeb: 1) lub diode iav voltage ntawm lub multimeter yog tsawg; 2) lub teeb-emitting diode ua hauj lwm voltage yog siab.
Multimeter diode iav voltage feem ntau yog hais txog 3V, qhov hluav taws xob tuaj yeem teeb pom kev zoo tib yam lub teeb-emitting diodes, hauv kev ntsuas lub diode zoo lossis phem tuaj yeem tiv tauj nrog tus cwj mem liab LED zoo, cwj mem dub rau sab tsis zoo ntawm LED, LED yog ci koj tuaj yeem txiav txim siab LED yog qhov zoo. Tab sis qee lub rooj tso zis voltage tsawg tsis tuaj yeem teeb lub LED lossis tsuas yog lub teeb me ntsis. Kuv tau siv lub tshuab hluav taws xob pheej yig dua los ntawm Unidux ua ntej, thiab nws tsis tuaj yeem teeb lub LED, thiab lub diode iav yog qhov tsis muaj txiaj ntsig, uas tsis yooj yim heev.
LED yog ib hom tshwj xeeb ntawm diode nrog rau pem hauv ntej conduction voltage poob, thiab qhov parameter no txawv heev. Cov xim sib txawv ntawm lub teeb-emitting diodes muaj qhov sib txawv conduction voltage tee. Feem ntau hais lus, lub teeb liab-emitting diode conduction voltage poob yog qhov tsawg tshaj plaws, txog qhov ntau ntawm (1.5-2) V; ntsuab yog thib ob, hauv (1.8-2.5) V los yog li ntawd; thiab qhov hluav taws xob xiav poob yog qhov siab tshaj plaws, hauv (2-3.5) V los yog li ntawd. Yog li, tib lub 'meter', thaum ntsuas cov xim sib txawv ntawm LEDs, qhov ci ntsa iab tsis zoo ib yam, feem ntau liab yog qhov ci tshaj plaws thiab xiav yog qhov tsaus ntuj tshaj plaws. Txawm tias qee cov xim tsis tuaj yeem teeb.
