Luminous Diode Resistance Ulwazi Olubandayo

Ingabe kufanele ngengeze ukumelana? Kuzokwenzekani ngaphandle kokumelana ngaphandle kwe-voltage? Yebo, i-diode ekhipha ukukhanya kufanele yengezwe ngokumelana nokusetshenziswa. I-diode ekhipha ukukhanya ayikwazi ukuba ngqo ku-voltage ethile. Ukumelana nokugeleza kufanele kube nomkhawulo. Kungenjalo. Kungani i-diode ekhipha ukukhanya ingakwazi ukuxhuma ngokuqondile ku-voltage glow diode engakwazi ukuxhunywa ngokuqondile kuzo zombili iziphetho ze-voltage ngokuyinhloko kubangelwa izizathu ezimbili: 1) ukwehla kwe-voltage enhle akuhambisani; 2) izinguquko zamanje zinkulu. Isizathu esingezansi. Ukwehla kokucindezela okuhle kwe-light-emitting diode kuhlukile. Uma usebenza ngokujwayelekile, i-diode ekhipha ukukhanya izoba ne-positive pressure drop VF. I-VF ayilona inani elithile, kodwa ububanzi. Ukuthatha i-diode ekhipha ukukhanya okubomvu njengesibonelo, ububanzi be-VF (1.7-2.2) V, futhi isikhathi ngasinye Ukuvumelana kwezici ze-diode yokukhanya akukuhle, futhi kuhluke kancane, ngakho-ke kunzima ukuyithola. i-voltage efanelekile kuwo wonke ama-diode. 2. Indlela efanele yokukhanyisa i-diode ekhiphayo. I-diode ekhipha ukukhanya ngokuvamile inezindlela ezimbili zokushayela. Indlela yokuqala iwukuxhuma nentambo yamanje-elinganiselwe yokumelana ku-voltage; indlela yesibili iwukusebenzisa umthombo wamanje ongashintshi ukushayela. Umshayeli we-voltage eqhubekayo. Ukuze uvimbele i-current ekubeni inkulu kakhulu, i-light-emitting diode iyashiswa, futhi i-light-emitting diode kanye nokumelana nomkhawulo wamanje kudinga ukusakazwa. Inani lokumelana liphethwa amafomula alandelayo: R = (V-Vf)/i. Phakathi kwazo, i-VF iyi-voltage eya phambili ye-diode ephumayo, futhi i yamanje engifuna ukuyigeleza. Uma sithatha i-diode ekhipha ukukhanya okubomvu njengesibonelo, ububanzi be-voltage yangaphambili yehla i-VF ingu-(1.7-2.2) V kanti ukusebenza kwamanje ngu-2-25mA. Uma uyiletha kufomula. Le ndlela yokushayela ngokuvamile isetshenziswa esimweni lapho inani lama-LED lincane. Uma isetshenziswa njengenkomba yamandla kanye nesekhethi yokukhanya ye-alamu, uma inombolo ye-diode yokushayela inkulu, ungacabangela ukusebenzisa umshayeli womthombo wamanje oqhubekayo. Umthombo we-Hengliu usetshenziswa kabanzi embonini yokukhanyisa ekhaya. Njengoba wonke ama-LED exhunywe ochungechungeni, inqobo nje uma i-LED eyodwa ilimele, wonke ama-LED awakhanyi. 3. Ukuqhathaniswa kwezindlela ezimbili zokushayela, indlela yamanje yokumelana nomkhawulo, isetshenziswa kakhulu esimweni lapho inani lobuhlalu besibani se-LED lincane uma kuqhathaniswa. Inzuzo yukuthi isifunda silula, futhi okubi ukuthi ukuncishiswa kokucindezela okuhle kwe-diode yokukhanya okukhanyayo akuhambelani, ngakho ukukhanya kokusetshenziswa okuningi kuhlukile. Indlela yokushayela yomthombo we-Hengliu ingaqinisekisa ukuthi ukukhanya kwe-diode ngayinye ekhiphayo kufana ngokuyisisekelo, kodwa ukulimala kobuhlalu besibani se-LED ngayinye kuzothinta ukusebenza kwazo zonke izibani ze-LED. Fingqa ama-diode akhipha ukukhanya awakwazi ukusetshenziswa ngokuqondile ekunikezeni amandla.