Abanye abahlobo babuza izizathu eziqhelekileyo kunye neendlela zonyango zezibane ze-LED ezidanyazayo, kwaye abanye abantu bafuna ukubuza isizathu sokuba izibane ze-LED zingakhanyi. Kuqhubekani? Enyanisweni, kukho ukusilela okuqhelekileyo okuthathu kunye nezisombululo zokubonisa izibane.
Iintsilelo ezintathu eziqhelekileyo zezibane ze-LED kunye nezisombululo:
Impazamo eqhelekileyo kukusilela komlungisi. Yiya kukukhanya City kwaye uthenge enye kwaye uyibuyisele. I-led yonke ayifane yonakaliswe.
Mbini. Izizathu zokudanyaza kwesibane somqondiso weLED:
1. Izibane zesibane kunye ne-led drive power ayihambelani, ibhere yesibane esiqhelekileyo esisodwa se-1W: 280-300 ma yangoku kunye: 3.0-3.4V yombane, ukuba i-chip yesibane ayinawo amandla aneleyo, iya kubangela ukukhanya komthombo wokukhanya. isenzeko, ukuba yangoku inkulu kakhulu, amaso isibane akayi kuba nako ukumelana iswitshi. Kwiimeko ezinzima, iingcingo zegolide okanye zobhedu ezingaphakathi kwamaso zinokutsha, nto leyo ebangela ukuba amaso angasebenzi.
2. Unikezelo lwamandla okuqhuba lungonakala, nje ukuba ubuyisele omnye umbane olungileyo wokuqhuba, awuyi kuqhwanyaza.
3. Ukuba umqhubi unomsebenzi wokukhusela ubushushu bokushisa, ukusebenza kokutshatyalaliswa kokushisa kwesibane sesignali ye-LED ayikwazi ukuhlangabezana neemfuno, kwaye ukukhuselwa kobushushu bomqhubi kuya kubetha xa kuqala ukusebenza. Umzekelo, izibane zeprojekithi ze-20 w ezisetyenziselwa ukudibanisa izibane ze-30W azenzi umsebenzi omhle wokupholisa.
4. Ukuba izibane zangaphandle zineziganeko ze-stroboscopic, kuthetha ukuba izibane zikhukula. Ngenxa yoko, ukuba iyaqhwanyaza, ayikhanyi. Ibhakana kunye nomqhubi baphukile. Ukuba umqhubi wenza umsebenzi omhle wokuthintela amanzi, intsimbi yesibane iphukile kwaye umthombo wokukhanya unokutshintshwa.
Ntathu. Ukusetyenzwa kwendlela yokudanyaza kwesikhanyiso se-LED:
1. Kwi-off-line-low-power low-LED lighting applications, i-topology yamandla aqhelekileyo yi-topology ye-flyback eyodwa. I-Green Dot, i-8W ngaphandle kwe-line umqhubi we-LED, idibana nemigangatho yokukhanya ye-Star solid-state yokukhanya. Kwimeko yoyilo, ngenxa yokuba ukuguqulwa kwamandla e-sinusoidal square wave ye-flyback regulator ayiboneleli ngamandla aqhubekayo kwi-bias ephambili, i-self-powered circuit inokuthi isebenze kwaye ibangele ukukhanya. Ukuze ugweme le ngxaki, kuyimfuneko ukwenza i-primary off-set discharge kumjikelo ngamnye wesiqingatha. Ngoko ke, kuyimfuneko ukukhetha ngokufanelekileyo i-capacitance kunye nemilinganiselo yokumelana nezibane ze-LED ezenza isiphaluka.
2. Ngokuqhelekileyo iliso lomntu liyakwazi ukubona ukukhanya kokukhanya kwi-frequency ye-70 Hz, kodwa ngaphezu koko ayikwazi. Ke ngoko, kwizicelo zokukhanya okukhokelwayo, ukuba isiginali ye-pulse inecandelo eliphantsi lokujikeleza kunye ne-frequency engaphantsi kwe-70 Hz, iliso lomntu liya kuziva lifiphaza. Ngokuqinisekileyo, kukho izinto ezininzi ezinokubangela ukuba izibane ze-LED ziqhwanyaze kwisicelo esithile.
3. Izihluzi ze-Emi ziyafuneka nakwi-led drive applications ezibonelela ngolungiso lwamandla alungileyo kunye nenkxaso yokufiphala kweeswitshi ze-SCR ezine-terminal bi-directional. Umbane wexeshana owenziwe linyathelo lokutshintsha kwe-SCR ye-triterminal bidirectional ivuyisa i-resonance yendalo ye-inductors kunye ne-capacitors kwi-filter emi.
Ukuba uphawu lwe-resonance lubangela ukuba igalelo langoku libe sezantsi kunobamba lwangoku lwe-switch element ye-bi-directional ye-SCR, i-switch element ye-SCR ene-terminal ezintathu-terminal bi-directional iya kuvalwa. Emva kokulibaziseka okufutshane, into yokutshintsha i-SCR ene-terminal emithathu-yesibini iya kuhlala ivula kwakhona ukuze ivuyise i-resonance efanayo. Olu ngcelele lweziganeko lunokuphinda-phindwa amaxesha amaninzi ngaphakathi komjikelo wesiqingatha somjikelo we-INPUT wamaza ombane we-LED semaphore, okukhokelela ekubonakaleni kokukhanya kwe-LED.
Ixesha lokuposa: Mar-11-2022
