Ntau lub teeb pom kev LED tau siv sab nraum zoov, thiab lawv tuaj yeem ua tsis tiav vim raug tshav ntuj ntau zaus. Cov xim luminous thiab luminous efficiency ntawm LEDs muaj feem xyuam rau cov ntaub ntawv thiab cov txheej txheem siv los ua cov LEDs. Cov qhov muag teev yog tag nrho xiav thaum xub thawj, thiab phosphor ntxiv tom qab. Cov xim sib txawv ntawm lub teeb tuaj yeem hloov kho raws li qhov sib txawv ntawm cov neeg siv khoom xav tau. Liab yog dav siv. , ntsuab, xiav thiab daj. Jinan LED hnub no yuav tham txog yuav ua li cas los daws qhov luv luv ntawm cov khoom siv.
1. Resistance nrhiav kom tau txoj kev, kho lub multimeter mus rau lub resistive iav, xyuas lub hauv av kuj nqi ntawm ib tug tej yam taw tes ntawm ib tug Circuit Court board, thiab ces sim tib lub point ntawm ib tug tib lub Circuit Court board los ntsuam xyuas seb tus nqi kuj txawv ntawm lub ib txwm tsis kam nqi. Yog tias tsis yog, qhov kev txiav txim siab ntawm qhov teeb meem.
2. Txoj kev kuaj xyuas qhov hluav taws xob, kho cov multimeter mus rau theem voltage, kuaj xyuas cov av voltage ntawm ib qho chaw ntawm lub voj voog uas xav tias muaj teeb meem, thiab sib piv seb nws puas zoo ib yam li tus nqi ib txwm muaj, txwv tsis pub lub Scope ntawm qhov teeb meem yog txiav txim siab. .
3. Txoj kev tshawb nrhiav luv luv, kho cov multimeter mus rau qhov ntsuas qhov ntsuas luv luv (qee qhov yog diode voltage poob zog lossis cov iav tsis kam, uas feem ntau muaj lub tswb ua haujlwm), xyuas seb puas muaj qhov tshwm sim luv luv, thiab daws nws. ua ntej tom qab pom qhov luv luv, kom nws tsis hlawv tawm lwm yam khoom siv. Cov txheej txheem yuav tsum tau ua nrog lub Circuit Court de-energized kom tsis txhob muaj kev puas tsuaj rau lub 'meter'.
4. Txoj kev ntsuas hluav taws xob poob qis, kho cov multimeter mus rau diode voltage nco nco iav, vim tias tag nrho cov ICs yog tsim los ntawm ntau yam yooj yim tib yam, tab sis lawv yog miniaturized, yog li thaum muaj tam sim no dhau los ntawm ib qho ntawm nws cov pins, yuav muaj. ib tug voltage poob hla tus pin. Feem ntau, qhov hluav taws xob poob ntawm tib tus pin ntawm tib hom IC zoo ib yam. Raws li tus nqi ntawm qhov voltage poob ntawm tus pin, kev ua haujlwm yuav tsum tau ua thaum lub tshuab hluav taws xob raug kaw. Txoj kev no muaj qee yam kev txwv. Piv txwv li, yog tias cov cuab yeej kuaj pom muaj kev tiv thaiv siab, nws tsis tuaj yeem kuaj pom.
