Kev xaiv thiab kev teeb tsa ntawm LED
Muaj peb yam tseem ceeb ntawm LEDs nyob rau hauv cov nqe lus ntawm cov qauv: ib tug yog ib tug leaded (lead lub kaum ntse ntse) LED, rated tam sim no feem ntau yog 20 mA, lub hwj chim yog me me, thiab ntau yam kev sib txuas yog xav tau rau lub teeb pom kev zoo; Lwm qhov yog ib qho-chip nto mount Chip LED, qhov ntsuas tam sim no feem ntau ntau dua 50 mA (tam sim no qhov siab tshaj plaws tam sim no ntawm LED ncav cuag 1000 mA), lub zog loj, thiab tuaj yeem siv ib leeg; Qhov thib peb yog kev sib xyaw ua ke ntau lub zog me me kom ua tiav lub zog siab, uas yog, kev sib xyaw ua ke Power LED.
Kev siv ntau lub LEDs nyob rau hauv parallel muaj cov nqi tsim khoom tsawg thiab tsim nyog rau thaj chaw loj teeb pom kev zoo, tab sis yuav tsum tau ua kom haum. Thaum siv cov diodes qis, txhawm rau ua kom lub teeb pom kev ntawm ib lub teeb ua tau raws li qhov xav tau ntawm lub ntsej muag mining, ntau lub diodes yuav tsum tau siv ua ke. Qhov no ua rau cov lus nug ntawm qhov siv hluav taws xob ntau npaum li cas thiab yuav ua li cas tswj tag nrho cov tam sim no ntawm lub diodes nyob rau hauv parallel thiab nyob rau hauv pab pawg neeg kom tau raws li qhov yuav tsum tau ntawm lub intrinsically kev nyab xeeb circuits. Vim tias qhov hluav taws xob ntawm qhov kev nyab xeeb ntawm qhov hluav taws xob yog 24, 18, 12 V, thiab lwm yam, cov khoom siv hluav taws xob sib raug rau cov kev xav tau ntawm kev nyab xeeb ntawm sab hauv yuav tsum yog 400, 600, thiab 1000 mA. Rau cov hluav taws xob tsis tshua muaj hluav taws xob zoo tib yam lub teeb-emitting diodes, qhov ua haujlwm qhov hluav taws xob feem ntau yog 3 txog 4 V thiab qhov ua haujlwm tam sim no yog 20 mA. Yog tias 18 V / 600 mA raug xaiv, 30 pawg tuaj yeem txuas nrog rau hauv qhov sib npaug, 5 hauv series ua ib pab pawg, thiab tom qab ntawd cov resistor tsim nyog txuas nrog hauv series. Qhov hluav taws xob poob ntawm txhua lub diode yog tsawg dua 3.6V, uas ua tau raws li qhov yuav tsum tau muaj ntawm hom kev nyab xeeb thiab ci ntsa iab. Thaum ib qho los yog ib pab pawg puas lawm, nws tsis cuam tshuam rau kev ua hauj lwm ntawm lwm cov diodes los yog lub illuminance.
Thaum muaj ntau lub LEDs txuas nrog rau tib lub sijhawm, lub zog ntawm ib qho LED me me thiab cov cua sov tsim tawm kuj sib txawv. Raws li ntev raws li cov LEDs tau teem caij tsim nyog thiab Cu cheeb tsam ntawm lub rooj tsav xwm luam tawm tau ua kom tiav, cov kev xav tau ntawm cov cua sov tuaj yeem ua tiav.
Thaum siv lub zog diodes siab, qhov tsim ntawm qhov kev nyab xeeb ntawm lub cev tsis muaj teeb meem ntxiv lawm. Qhov tseem ceeb yog yuav ua li cas npaj cov diodes kom tau raws li qhov xav tau ntawm lub ntsej muag mining.
