Njengoba ukusetshenziswa kwezikrini zokubonisa i-LED kuya ngokuya kusakazeka, imingcele kagesi yezikrini zokubonisa ze-LED iya ngokuya ibaluleke kakhulu futhi ikhathazekile ngabathengi. Wonke umuntu uyazi ukuthi izikrini zokubonisa ze-LED zenziwe ngamamojula e-LED ngayinye, futhi ingemuva lesikrini lixhumekeUkunikezwa kwamandla kwe-LED, bese kuxhunywa intambo yamandla nolayini wesignali.
Ngakho-ke ungabala kanjani inani lamandla kagesi wezikrini zokubonisa ze-LED?
Amamojula esikrini esibonisiwe se-LED ayacutshungulwa futhi akhiqizwe ngokuhlanganisa izinto ezingavuthiwe ezifana nobuhlalu besibani se-LED, amabhodi wesekethe e-PCB, ama-IC, namakhithi. Umgomo wokusebenza wamamojula esikrini esibonisiwe se-LED ukuthi i-IC yamanje eqhubekayo ishayela i-chip ekhipha ukukhanya kubuhlalu besibani se-LED ukuze ibonise imibala.
Mayelana nombala wokuboniswa, amamojula esikrini esibonisiwe se-LED ahlukaniswe abe izinhlobo ezintathu: umbala owodwa, imibala emibili, nombala ogcwele. Ngokuphathelene nobubanzi besicelo, amamojula e-LED ahlukaniswe amamojula angaphakathi namamojula angaphandle.
Ngokuvamile, amandla amanje amamojula e-LED anombala ogcwele makhulu, amanje amamojula e-LED anombala owodwa kanye nemibala emibili mancane uma kuqhathaniswa, amanje amamojula e-LED angaphandle makhulu, kanti okwamanje amamojula e-LED angaphakathi mancane uma kuqhathaniswa. Kodwa-ke, lapho ifekthri ilungisa iphutha "ibhalansi emhlophe" yemojuli ye-LED, ukusebenza kwamanje kwemojuli yesikrini sokubonisa se-LED evamile ngokuvamile kuba ngaphansi kuka-10A.
Okokuqala, sidinga ukukala okwamanje kwemojula eyodwa ye-LED.
Singasebenzisa i-multimeter ukuxhuma kusekethe ukukala amapharamitha wangempela wamanje wemojula ye-LED. Namuhla, sizothatha imojuli ye-P10-4S yangaphandle yokubonisa i-LED njengesibonelo ukuze sichaze indlela yokukala amapharamitha wamanje wemojuli isinyathelo ngesinyathelo.
Isinyathelo 1, lungisa izinto zokusebenza nezinto
Silungiselela amamojula amaningana e-P10-4S angaphandle okubonisa i-LED, i-multimeter (ingakwazi ukukala i-DC yamanje ngaphakathi kwe-10A), izintambo eziningana, i-tape kagesi, ama-wire strippers, ikhadi lokulawula isibonisi se-LED, ukunikezwa kwamandla okuboniswa kwe-LED.
Isinyathelo sesi-2, xhuma ngendlela efanele
Kulesi sivivinyo sokulinganisa, sisebenzisa i-multimeter njenge-ammeter ye-DC. Ibanga eliphezulu le-multimeter ukukala i-DC yamanje ngu-10A. Sixhuma i-multimeter ochungechungeni kumjikelezo wemodyuli ye-LED.
Ukulandelana kwe-wiring okuqondile kuthi:
1. Xhuma i-AC 220V ekugcineni kokufaka kwamandla e-LED (okulingana nendima yesiguquli, ukuguqula i-220V AC ibe yi-5V DC)
2. Xhuma ucingo olusuka esigxotsheni esiphozithivu sesiphetho esiphumayo uye epeni lentambo ebomvu (i-positive pole) ye-multimeter
3. Xhuma ucingo olubomvu embotsheni ebomvu ethi “10A” ku-multimeter
4. Xhuma ipeni locingo olumnyama ocingweni olubomvu (i-pozitive pole) yemojuli yentambo yamandla
5. Xhuma intambo yamandla emojuli ngokujwayelekile
6. Xhuma intambo emnyama (isigxobo esinegetive) yentambo yamandla wemojuli emuva esigxotsheni esinegethivu sokuphela kokuphumayo kokuphakelwa kwamandla kwe-LED.
Isinyathelo sesi-3, kala ukufundwa
Singabona ukuthi uma isokhethi yamandla okufakwayo ixhunyiwe futhi isibonisi sonke se-LED sikhanyisiwe, okwamanje imojuli eyodwa ayinkulu kakhulu. Njengoba okuqukethwe kokudlala kushintsha, ukufundwa ku-multimeter nakho kuyashintshashintsha, ngokuyisisekelo kugcinwa ku-1-2A.
Sicindezela inkinobho yokuhlola ekhadini lokulawula ukuze sishintshe isimo sesikrini futhi sithole idatha yokuhlola elandelayo:
a. Eyamanje inkulu kunawo wonke lapho “amhlophe wonke”, acishe abe ngu-5.8A
b. Eyamanje ingu-3.3A ezifundeni ezibomvu neziluhlaza
c. Eyamanje ingu-2.0A esimweni esiluhlaza okwesibhakabhaka
d. Uma ushintshela emuva kokuqukethwe kohlelo olujwayelekile, okwamanje kushintshashintsha phakathi kuka-1-2A.
Isinyathelo sesi-4, ukubala
Manje singakwazi ukubala ukuthi mangaki amamojula e-LED amandla kagesi e-LED angawaphatha ngokusekelwe emiphumeleni yokulinganisa engenhla. Indlela yokubala ethize yilena: Ukunikezwa kwamandla kwe-LED ngakunye kuyi-transformer. Sithatha amandla ethu okushintsha avamile angu-200W njengesibonelo, umkhiqizi unikeza imingcele yokulayisha njengokuthi "okuphumayo 5V40A" kanye "nezinga lokuguqulwa elisebenzayo elingu-88%".
Amandla asebenzayo ahlinzekwa ugesi oshintshwayo we-LED: P=88% x 200W=176W. Ngokwefomula: P=UI, ukusetshenziswa kwamandla okuphezulu kwemojuli eyodwa ye-LED kungatholakala: P1=UI=5V x 5.8A=29W. Kusukela kulokhu, inani lamamojula amandla okushintshaniswa kwe-LED okukodwa angabalwa: n=P/P1=176W/29W≈6.069
Ngokusekelwe ekubalweni okungenhla, siyazi ukuthi uma inani lamamojula e-LED aphethwe lingeqi ku-6, ukunikezwa kwamandla kwe-LED akulayishwa ngokweqile.
Okwamanje esikubale umkhawulo wamanje uma imojuli ye-LED “imhlophe yonke”, futhi ukusebenza kwamanje ngesikhathi sokudlala okuvamile kuvame ukuba ngu-1/3-1/2 kuphela wamanje omkhulu. Ngakho-ke, inani lemithwalo elibalwe ngokuya ngenani eliphezulu lamanje inombolo yomthwalo ophephile. Bese kuthi mangaki amamojula e-LED ahlanganiswe ndawonye ukuze enze isikrini esikhulu sokubonisa se-LED, bese ehlukaniswa ngale nombolo yokulayisha ephephile, singathola ukuthi mangaki amandla e-LED asetshenziswa esikrinini sokubonisa se-LED.
Ukushintsha Ukunikezwa kwamandla Ukunikezwa kwamandla angangeni manzi Ukunikezwa kwamandla amancane kakhulu
Umphakeli kagesi we-LED, uma unentshisekelo ngemikhiqizo yethu, sicela usithinte!
Isikhathi sokuthumela: Jul-20-2024