Ubudlelwane phakathi komgangatho wezibane ze-LED kunye nokunikezelwa kwamandla
I-LED ineenzuzo ezininzi ezifana nokukhuselwa kwendalo, ubomi obude, ukusebenza kakuhle kwe-photoelectric (ukukhanya kwangoku kufikelele kwi-130LM / W ~ 140LM / W), ukumelana nokuzamazama komhlaba, njl. Kwiminyaka yakutshanje, isicelo sayo siphuhliswe ngokukhawuleza kumashishini ahlukeneyo. Kwithiyori, ubomi benkonzo ye-LED yiyure eyi-100,000, kodwa kwinkqubo yokwenyani yesicelo, abanye abaqulunqi bokukhanyisa izibane ze-LED abanakho ukuqonda okwaneleyo okanye ukhetho olungafanelekanga lwamandla okuqhuba i-LED okanye baqhube ngokungaboniyo iindleko eziphantsi. Ngenxa yoko, ubomi beemveliso zokukhanyisa i-LED bufutshane kakhulu. Ubomi bezibane ze-LED ezihluphekileyo zingaphantsi kweeyure ze-2000 kwaye ziphantsi. Isiphumo kukuba izibonelelo zezibane ze-LED azikwazi ukuboniswa kwisicelo.
Ngenxa yobungcali bokusetyenzwa kwe-LED kunye nokuveliswa, iimpawu zangoku kunye ne-voltage yee-LED eziveliswe ngabavelisi abohlukeneyo kunye nomenzi ofanayo kwibhetshi enye yeemveliso unomahluko omkhulu womntu ngamnye. Ukuthatha ukucaciswa okuqhelekileyo kwamandla aphezulu 1W i-LED emhlophe njengomzekelo, ngokwemigaqo yangoku kunye ne-voltage ye-LED, inkcazo emfutshane inikwe. Ngokubanzi, amandla ombane angaphambili we-1W isicelo sokukhanya okumhlophe malunga ne-3.0-3.6V, oko kukuthi, xa ibhalwe njenge-1W LED. Xa umbane uhamba nge-350 mA, i-voltage ngaphesheya kwayo ingaba yi-3.1V, okanye ingaba ngamanye amaxabiso kwi-3.2V okanye i-3.5V. Ukuqinisekisa ubomi be-1WLED, umenzi we-LED jikelele uncoma ukuba umzi-mveliso wesibane usebenzise i-350mA yangoku. Xa umbane ohamba phambili nge-LED ufikelela kwi-350 mA, ukunyuka okuncinci kombane ohamba phambili kwi-LED kuya kubangela ukuba i-LED yangaphambili yangoku inyuke ngokukhawuleza, ibangele ubushushu be-LED bunyuke ngokuhambelana, ngaloo ndlela kukhawulezisa ukubola kokukhanya kwe-LED. Ukunciphisa ubomi be-LED kunye nokutshisa i-LED xa inzulu. Ngenxa yobungcali bombane kunye notshintsho lwangoku lwe-LED, iimfuno ezingqongqo zibekwe kumbane wokuqhuba i-LED.
Umqhubi we-LED sisitshixo kwizibane ze-LED. Kufana nentliziyo yomntu. Ukuvelisa izibane eziphezulu ze-LED zokukhanyisa, kuyimfuneko ukulahla i-voltage rhoqo ukuqhuba ii-LEDs.
Uninzi lwezityalo zokupakisha ze-LED ezinamandla aphezulu ngoku zitywina ii-LED ezininzi ezizimeleyo ngokuhambelanayo kunye nochungechunge ukuvelisa i-20W enye, i-30W okanye i-50W okanye i-100W okanye i-LED yamandla aphezulu. Nangona ngaphambi kwephakheji, zikhethwe ngokungqongqo kwaye zifaniswe, kukho ii-LED ezininzi kunye namakhulu ngenxa yobuncinci bangaphakathi. Ke ngoko, iimveliso ze-LED ezipakishwe ngamandla aphezulu zisenomohluko omkhulu kumbane kunye nangoku. Xa kuthelekiswa ne-LED enye (ngokubanzi ukukhanya okumhlophe okukodwa, ukukhanya okuluhlaza, ukukhanya okuluhlaza okwesibhakabhaka okusebenzayo kwe-2.7-4V, ukukhanya okubomvu okukodwa, ukukhanya okuphuzi, ukukhanya kwe-orange ukusebenza kwe-1.7-2.5V) iiparameters zihluke ngakumbi!
Okwangoku, iimveliso zezibane ze-LED (ezifana ne- guardrails , iikomityi zezibane, izibane zokubonisa, izibane zegadi, njl.) eziveliswa ngabavelisi abaninzi basebenzisa ukuchasana, amandla kunye nokunciphisa i-voltage, kwaye emva koko wongeza i-diode ye-Zener ukubonelela amandla kwii-LEDs. Kukho iziphene ezinkulu. Okokuqala, ayisebenzi. Idla amandla amaninzi kwi-step-down resistor. Isenokude igqithe amandla asetyenziswe yi-LED, kwaye ayikwazi ukubonelela nge-high-current drive. Xa i-current ikhudlwana, amandla asetyenzisiweyo kwi-resistor-down-down resistor aya kuba mkhulu, i-LED yangoku ayinakuqinisekiswa ukuba iya kudlula iimfuno zayo eziqhelekileyo zokusebenza. Xa uyila imveliso, i-voltage kwi-LED isetyenziselwa ukuqhuba unikezelo lwamandla, oluyindleko yokukhanya kwe-LED. I-LED iqhutywe yindlela yokuchasana kunye ne-capacitance-down-down mode, kwaye ukukhanya kwe-LED akukwazi ukuzinziswa. Xa i-voltage yonikezelo lwamandla iphantsi, ukukhanya kwe-LED kuba mnyama, kwaye xa umbane wombane uphezulu, ukukhanya kwe-LED kuya kuqaqamba. Ngokuqinisekileyo, inzuzo enkulu yokuchasa kunye ne-capacitive step-down drives LEDs yindleko ephantsi. Ngoko ke, ezinye iinkampani zokukhanyisa i-LED zisasebenzisa le ndlela.
Abanye abavelisi, ukuze banciphise iindleko zemveliso, besebenzisa i-voltage engaguqukiyo ukuqhuba i-LED, bazisa nothotho lwemibuzo malunga nokukhanya okungalinganiyo kwe-LED nganye kwimveliso yobuninzi, i-LED ayinakusebenza kweyona ndawo ilungileyo, njl. .
Ukuqhuba umthombo wangoku yeyona ndlela ibalaseleyo yokuqhuba i-LED. Iqhutywa ngumthombo wangoku oqhubekayo. Akudingi ukudibanisa i-resistors yokunciphisa yangoku kwisekethe yokuphuma. Ukuqukuqela kwangoku kwi-LED akuchatshazelwa lutshintsho lwamandla ombane wangaphandle, utshintsho lobushushu be-ambient, kunye neeparamitha ze-LED ezidityanisiweyo. Isiphumo kukugcina isigxina sangoku kwaye unike umdlalo opheleleyo kwiimpawu ezibalaseleyo ze-LED.