Dab tsi yuav tsum them sai sai rau thaum lub sij hawm siv LED teeb taws teeb

1. Ua haujlwm rov qab, thaum nws qhov kub ua haujlwm siab dua 25 ℃, Ifm, Ifp thiab Pd xav kom raug txo; tus nqi txo tam sim no yog -0.36mA / ℃ (DC tsav), lossis -0. 86 mA / ℃ (mem tes tsav); Tus nqi txo yog -0.75mW / ℃; qhov ua haujlwm tam sim no ntawm cov khoom tsis tuaj yeem ntau dua 60% ntawm qhov ntsuas kub ua haujlwm sib txig sib xyaw Ifm thiab Ifp;

2. Lub teeb nraub qaum yuav tsum los tiv thaiv hluav taws xob: Yog tias lub teeb hluav taws xob LED raug puas los ntawm hluav taws xob zoo li qub, nws yuav ua qee qhov tsis txaus siab, xws li nce to tam sim no, poob qis lossis nce zoo li qub voltage, kev ntsuas qis tam sim no tsis qaim los yog lub teeb tsis txawv ( tsaus nti, thiab lwm yam); yog li, Txhua yam khoom siv thiab cov twj tso rau hauv kev sib cuag nrog cov khoom xav kom muaj kev ntseeg siab ruaj ruaj; txhua tus neeg ua haujlwm nrog cov khoom yuav tsum hnav cov khoom siv coj los tiv thaiv kev tiv thaiv zoo li qub (xws li lub dab teg tiv thaiv zoo li qub lossis cov hnab looj tes tiv thaiv zoo li qub, thiab lwm yam);

3, Qhov chaw nres tsheb rov qab yuav tsum dhau kev tiv thaiv tam sim no: Txuas LED tiv thaiv resistor hauv series los ua kom nws ua haujlwm ruaj khov, lub xam qhov tseeb ntawm kev tiv thaiv kev tiv thaiv: R=(Vcc － Vf) / Yog tias, qhov twg: Vcc yog lub zog mov voltage, Vf yog qhov hluav taws xob tsav tsav LED, Yog Tias Forward Tam sim no

4. Thaum kuaj pom thiab siv lub teeb ci rov qab, nws yog qhov yuav tsum tau muab txhua LED nrog lub teeb hluav taws xob qub (uas yog, siv cov khoom siv tas mus li) uas tau ua raws li Yog hais tias cov kev cai, kom paub tseeb tias cov backlight mus txog qhov kev hloov tshwj xeeb;

5. Vf thiab Yog tias qhov muaj nuj nqis yuav tsum tsis pub tshaj tus nqi rated tseem ceeb teev nyob rau hauv" Photoelectric yam ntxwv" kom tsis txhob muaj kev puas tsuaj rau cov backlight LED.