Abanye abangani babuza izizathu ezivamile nezindlela zokwelashwa zezibani zesignali ye-LED ezikhanyayo, futhi abanye abantu bafuna ukubuza isizathu sokuthi kungani izibani zesignali ye-LED zingakhanyi. Kwenzakalani? Eqinisweni, kukhona ukwehluleka okuthathu okujwayelekile kanye nezixazululo zokukhanyisa izibani.
Ukwehluleka okuthathu okujwayelekile kwezibani zesignali ye-LED nezixazululo:
Iphutha elivamile ukwehluleka ukulungisa. Hamba eCity City uthenge eyodwa bese uyishintsha. I-led yonke ayivamisile ukulimala.
Okubili. Izizathu zokukhanyisa kwesignali ye-LED:
1. Ubuhlalu besibani namandla edrayivu eholayo akufani, ubuhlalu besibani obujwayelekile obungu-1W obujwayelekile :280-300 ma yamanje kanye ne-voltage engu-3.0-3.4V, uma i-chip yesibani ingenawo amandla anele, izobangela ukukhanya komthombo into, uma yamanje inkulu kakhulu, ubuhlalu besibani ngeke bukwazi ukumelana nokushintsha. Ezimweni ezimbi kakhulu, izintambo zegolide noma zethusi ngaphakathi kobuhlalu zingasha, okubangela ukuthi ubuhlalu buhluleke ukusebenza.
2. Ukunikezwa kwamandla okushayela kungase konakaliswe, inqobo nje uma ufaka enye indawo yamandla kagesi omuhle, ngeke kucwayize.
3. Uma umshayeli enomsebenzi wokuvikela izinga lokushisa ngokweqile, ukusebenza kokukhipha ukushisa kwesibani sesignali ye-LED akukwazi ukuhlangabezana nezimfuneko, futhi ukuvikelwa kokushisa okungaphezu kokushisa komshayeli kuzocwayiza lapho eqala ukusebenza. Isibonelo, izindlu zezibani ze-projection engu-20 w ezisetshenziselwa ukuhlanganisa amalambu angu-30W azenzi umsebenzi omuhle wokupholisa.
4. Uma izibani zangaphandle nazo zinezenzakalo ze-stroboscopic, kusho ukuthi izibani zigcwele amanzi. Ngenxa yalokho, uma icwayiza, ayikhanyi. Ibhakabhaka nomshayeli baphukile. Uma umshayeli enza umsebenzi omuhle wokuvimbela amanzi, ubuhlalu besibani buphukile futhi umthombo wokukhanya ungashintshwa.
Ezintathu. Ukucutshungulwa kwendlela yokukhanyisa isignali ye-led:
1. Kuzinhlelo zokusebenza zokukhanyisa ze-LED zamandla aphansi angaxhunyiwe ku-inthanethi, i-topology yamandla evamile i-flyback topology ehlukanisiwe. Ichashazi Eliluhlaza, umshayeli we-LED ongaxhunyiwe ku-inthanethi we-8W, ihlangabezana nezindinganiso zokukhanyisa ze-energy Star solid-state. Esimeni sokuklama, ngenxa yokuthi ukuguqulwa kwamandla we-sinusoidal square wave yesilawuli se-flyback akunikezi amandla angashintshi okwenzelela okuyinhloko, isifunda esinamandla esizenzela amandla singasebenza futhi sibangele ukucwayiza kokukhanya. Ukuze ugweme le nkinga, kuyadingeka ukwenza ukukhishwa okuyinhloko kwe-off-set emjikelezweni ngamunye wesigamu. Ngakho-ke, kuyadingeka ukukhetha kahle i-capacitance kanye namanani okumelana nezibani zesignali ze-LED ezakha isifunda.
2. Ngokuvamile iso lomuntu likwazi ukubona ukucwayiza kokukhanya ngemvamisa engu-70 Hz, kodwa ngaphezu kwalokho alikwazi. Ngakho-ke, ezinhlelweni zokukhanyisa eziholayo, uma isignali ye-pulse inengxenye yefrikhwensi ephansi ene-frequency engaphansi kuka-70 Hz, iso lomuntu lizozwa ukucwayiza. Yiqiniso, kunezici eziningi ezingabangela izibani ze-LED ukuthi zicwayize kuhlelo lokusebenza oluthile.
3. Izihlungi ze-Emi ziyadingeka ngisho nasezinhlelweni zedrayivu eholayo ehlinzeka ngokulungiswa okuhle kwesici samandla kanye nokufiphala kokusekelwa kwamaswishi e-SCR enamatheminali amathathu. Amandla wesikhashana abangelwa yisinyathelo seswishi ye-SCR ye-triterminal bidirectional ijabulisa ukuzwakala kwemvelo kwama-inductors nama-capacitor kusihlungi se-emi.
Uma isici se-resonance sibangela ukuthi okokufaka kwamanje kube ngaphansi kunesibambeli samanje sesici sokushintsha se-SCR esinamatheminali amathathu, into yokushintsha ye-SCR enezinhlangothi ezintathu izovalwa. Ngemva kokulibaziseka okufushane, into yokushintsha ye-SCR eneziphetho ezintathu ngokuvamile izovula futhi ukuze ijabulele ukuzwakala okufanayo. Lolu chungechunge lwemicimbi lungase luphindwe izikhathi eziningi phakathi nohhafu womjikelezo we-INPUT ye-waveform yamandla we-LED semaphore, okuholela ekucwayizeni kwe-LED okubonakalayo.
Isikhathi sokuthumela: Mar-11-2022
