Njengoko usetyenziso lwezikrini zokubonisa i-LED luba lubanzi ngakumbi, iiparameters zombane ze-LED ezibonisa izikrini zixatyiswa kakhulu kwaye zixhalabile ngabathengi. Wonke umntu uyazi ukuba izikrini zokubonisa i-LED zenziwe ngeemodyuli ze-LED nganye nganye, kwaye umva wesikrini uqhagamshelweUkunikezelwa kwamandla e-LED, kwaye ke intambo yamandla kunye nomgca wesignali zixhunyiwe.
Ke ubala njani inani lamandla ombane kwizikrini zokubonisa i-LED?
Iimodyuli zesikrini sokubonisa i-LED zicutshungulwa kwaye ziveliswa ngokudibanisa izinto eziluhlaza ezifana neentsimbi zesibane se-LED, iibhodi zeesekethe ze-PCB, ii-ICs, kunye neekiti. Umgaqo osebenzayo weemodyuli zesikrini sokubonisa i-LED kukuba i-IC eqhubekayo yangoku iqhuba i-chip ekhupha ukukhanya kwiintsimbi zesibane se-LED ukubonisa imibala.
Ngokubhekiselele kumbala wokubonisa, iimodyuli zesikrini ze-LED zihlukaniswe zibe ziindidi ezintathu: umbala omnye, imibala emibini, kunye nombala opheleleyo. Ngokoluhlu lwesicelo, iimodyuli ze-LED zihlulwe kwiimodyuli zangaphakathi kunye neemodyuli zangaphandle.
Ngokuqhelekileyo, iimodyuli ze-LED ezinemibala egcweleyo zinkulu, okwangoku imodyuli ye-LED enombala omnye kunye nemibala emibini incinci, okwangoku iimodyuli ze-LED zangaphandle zinkulu, kwaye okwangoku iimodyuli ze-LED zangaphakathi zincinci. Nangona kunjalo, xa i-factory ilungisa "ibhalansi emhlophe" yemodyuli ye-LED, ukusebenza kwangoku kwemodyuli yeskrini ye-LED eqhelekileyo ingaphantsi kwe-10A.
Okokuqala, kufuneka silinganise okwangoku kwimodyuli enye ye-LED.
Singasebenzisa i-multimeter ukudibanisa kwisekethe ukulinganisa iiparitha zangoku zangoku zemodyuli ye-LED. Namhlanje, siya kuthatha imodyuli ye-P10-4S yangaphandle yokubonisa i-LED njengomzekelo wokuchaza indlela yokulinganisa imodyuli yangoku yeeparamitha inyathelo ngenyathelo.
Inyathelo 1, lungiselela izixhobo kunye nezinto
Silungiselela iimodyuli ezininzi ze-P10-4S zangaphandle zokubonisa i-LED, i-multimeter (inokulinganisa i-DC yangoku ngaphakathi kwe-10A), iingcingo ezininzi, i-tape yombane, i-wire strippers, ikhadi lokulawula umboniso we-LED, ukunikezelwa kwamandla okubonisa i-LED.
Inyathelo lesi-2, qhagamshela ngokuchanekileyo
Kolu vavanyo lokulinganisa, sisebenzisa i-multimeter njenge-ammeter ye-DC. Uluhlu oluphezulu lwe-multimeter ukulinganisa i-DC yangoku yi-10A. Sidibanisa i-multimeter kwichungechunge kwisiphaluka semodyuli ye-LED.
Ulandelelwano oluthile lwe-wiring lu:
1. Qhagamshela i-AC 220V ukuya ekupheleni kokufakwa kombane we-LED (okulingana nendima ye-transformer, ukuguqula i-220V AC ibe yi-5V DC)
2. Qhagamshela ucingo olusuka kwipali evumayo yesiphelo sesiphumo ukuya kwipeni yocingo ebomvu (ipali evumayo) yemultimeter.
3. Gxuma ucingo olubomvu kwindawo ebomvu "10A" kwi-multimeter
4. Qhagamshela ipeni yocingo olumnyama kucingo olubomvu (ipali elungileyo) yentambo yombane yemodyuli
5. Nxulumanisa intambo yamandla emodyuli kwimodyuli ngokuqhelekileyo
6. Qhagamshela ucingo olumnyama (ipali engalunganga) yentambo yamandla emodyuli emva kwipali engalunganga yokuphela kwemveliso yonikezelo lwamandla lwe-LED.
Inyathelo lesi-3, yenza umlinganiselo wokufunda
Siyabona ukuba xa i-socket yamandla efakwe kuyo ifakwe kwaye yonke i-LED ibonisa i-LED, okwangoku imodyuli enye ayinkulu kakhulu. Njengoko umxholo wokudlala utshintsha, ukufundwa kwi-multimeter nako kuyaguquguquka, ngokusisiseko kugcinwe kwi-1-2A.
Sicofa iqhosha lovavanyo kwikhadi lokulawula ukutshintsha imeko yesikrini kwaye ufumane le datha yovavanyo ilandelayo:
a. Umsinga ngowona mkhulu xa "zonke zimhlophe", malunga ne-5.8A
b. Okwangoku yi-3.3A kwiindawo ezibomvu kunye neziluhlaza
c. Okwangoku yi-2.0A kwimo eblue
d. Xa utshintshela umva kumxholo weprogram yesiqhelo, okwangoku iguquguquka phakathi kwe-1-2A.
Inyathelo lesi-4, ukubala
Ngoku sinokubala ukuba zingaphi iimodyuli ze-LED ezinokuthwala umbane we-LED ngokusekelwe kwiziphumo zomlinganiselo ongentla. Indlela yokubala ethile yile: Umbane ngamnye we-LED uyisiguquli. Ukuthatha i-200W yethu esetyenziswa ngokuqhelekileyo ukunikezelwa kwamandla njengomzekelo, umenzi unika iiparitha zomthwalo njenge "output 5V40A" kunye "nezinga lokuguqulwa elisebenzayo 88%".
Amandla asebenzayo abonelelwa ngombane wokutshintsha kwe-LED: P=88% x 200W=176W. Ngokwefomula: P=UI, ubuninzi bokusetyenziswa kwamandla kwimodyuli enye ye-LED inokufumaneka: P1=UI=5V x 5.8A=29W. Ukusuka koku, inani leemodyuli ezinokuthi zithwale umbane omnye wokutshintsha kwe-LED zingabalwa: n=P/P1=176W/29W≈6.069
Ngokusekelwe kubalo olungentla, siyazi ukuba xa inani leemodyuli ze-LED ezithwalwayo zingadluli kwi-6, umbane we-LED awugqithiswanga.
Ikhoyo ngoku esiyibalileyo ngowona mzuzu uphezulu xa imodyuli ye-LED "yonke imhlophe", kwaye ukusebenza okwangoku ngexesha lokudlala okuqhelekileyo kudla ngokuba yi-1 / 3-1 / 2 kuphela yobuninzi bangoku. Ngoko ke, inani lemithwalo ebalwa ngokobuninzi bangoku yinombolo yomthwalo okhuselekileyo. Ke zingaphi iimodyuli ze-LED ezidityanisiweyo kunye ukwenza isikrini esikhulu sokubonisa i-LED, kwaye emva koko sahlulwe ngale nombolo yomthwalo okhuselekileyo, sinokufumana ukuba zingaphi izixhobo zombane ze-LED ezisetyenziswa kwiscreen sokubonisa i-LED.
Ukutshintsha uBonelelo lwaMandla Unikezelo lwaMandla oNgena manzi Ubonelelo lwaMandla oluncinci kakhulu
Umthengisi wombane we-LED, ukuba unomdla kwiimveliso zethu, nceda uqhagamshelane nathi!
Ixesha lokuposa: Jul-20-2024