Abanye abahlobo babuza izizathu eziqhelekileyo kunye neendlela zonyango zokukhanyisa izibane ze-LED, kwaye abanye abantu bafuna ukubuza isizathu sokuba izibane ze-LED zingakhanyi. Kwenzeka ntoni? Enyanisweni, kukho ukusilela okuqhelekileyo okuthathu kunye nezisombululo kwizibane zesignali.
Ukusilela okuqhelekileyo kwezibane zesignali ze-LED kunye nezisombululo ezintathu:
Ingxaki eqhelekileyo kukusilela kwe-rectifier. Yiya kwi-light City uthenge enye kwaye uyitshintshe. I-led yonke ayonakalanga rhoqo.
Izizathu ezimbini: Izibane zesignali ye-LED ezikhanyayo:
1. Iibheyi zesibane kunye namandla okuqhuba i-LED awafani, iibheyi zesibane eziqhelekileyo ze-1W zine-:280-300 ma current kunye ne-:3.0-3.4V voltage, ukuba itshiphu yesibane ayinawo amandla aneleyo, iya kubangela isiganeko sokuxinana komthombo wokukhanya, ukuba i-current inkulu kakhulu, iibheyi zesibane aziyi kukwazi ukumelana neswitshi. Kwiimeko ezinzima, iingcingo zegolide okanye zobhedu ngaphakathi kweebheyi zinokutsha, nto leyo ebangela ukuba iibheyi zingasebenzi.
2. Umbane we-drive usenokonakala, lo gama nje uwutshintsha ngesinye isixhobo sombane se-drive esilungileyo, asiyi kuqhwanyaza.
3. Ukuba umqhubi unomsebenzi wokukhusela ubushushu obugqithisileyo, ukusebenza kokusasaza ubushushu kwesibane sesignali ye-LED akunakuhlangabezana neemfuno, kwaye ukhuseleko lobushushu obugqithisileyo lomqhubi luya kukhazimla xa siqala ukusebenza. Umzekelo, indlu yesibane seprojektha ye-20 w esetyenziselwa ukudibanisa izibane ze-30W ayisebenzi kakuhle ekupholiseni.
4. Ukuba izibane zangaphandle nazo zine-stroboscopic phenomena, oko kuthetha ukuba izibane zigcwele amanzi. Ngenxa yoko, ukuba ziyakhazimla, azikhanyi. I-beacon kunye nomqhubi zaphukile. Ukuba umqhubi wenza umsebenzi omhle wokuthintela amanzi, i-lamp bead yaphukile kwaye umthombo wokukhanya unokutshintshwa.
Isithathu. Indlela yokucubungula isibane sesignali ye-LED ekhanyayo:
1. Kwizicelo zokukhanyisa ze-LED ezisebenzisa amandla aphantsi ngaphandle komgca, i-topology yamandla eqhelekileyo yi-topology ye-flyback eyodwa. I-Green Dot, umqhubi we-LED osebenzisa amandla angaphantsi komgca we-8W, ihlangabezana nemigangatho yokukhanyisa ye-energy Star solid-state. Kwimeko yoyilo, kuba ukuguqulwa kwamandla esikwere se-sinusoidal square wave yomlawuli we-flyback akuniki amandla angaguqukiyo kwi-primary bias, i-dynamic self-power circuit ingenza i-light light ibonakale ingasebenzi kwaye ibangele ukukhanya kube mnyama. Ukuze kuthintelwe le ngxaki, kuyimfuneko ukwenza i-primary off-set discharge kwisiqingatha ngasinye somjikelo. Ke ngoko, kuyimfuneko ukukhetha ngokufanelekileyo i-capacitance kunye ne-resistance values zezibane ze-LED ezenza i-circuit.
2. Ngokwesiqhelo iliso lomntu liyakwazi ukubona ukukhanya okukhanyayo ngesantya se-70 Hz, kodwa ngaphezulu koko alikwazi. Ke ngoko, kwizicelo zokukhanyisa ze-LED, ukuba isignali ye-pulse inenxalenye yesantya esiphantsi enesantya esingaphantsi kwe-70 Hz, iliso lomntu liya kuziva likhanya. Kakade ke, zininzi izinto ezinokubangela ukuba izibane ze-LED zikhanye kwisicelo esithile.
3. Izihluzi ze-Emi ziyafuneka nakwii-software ze-LED drive ezibonelela ngokulungiswa kakuhle kwamandla kunye nokuxhasa ukufiphala kweeswitshi ze-SCR ezine-terminal ezimbini. Umbane odlulayo obangelwa linyathelo leswitshi ye-SCR ezimbini ezimbini uvuselela i-resonance yendalo yee-inductors kunye nee-capacitors kwi-emi filter.
Ukuba uphawu lwe-resonance lubangela ukuba umsinga wokufaka ube ngaphantsi komsinga wokubamba we-three-terminal bi-directional SCR switch element, i-three-terminal bi-directional SCR switch element iya kucinywa. Emva kokulibaziseka okufutshane, i-three-terminal bi-directional SCR switching element iya kuphinda ivuleke ukuze ivuselele i-resonance efanayo. Olu luhlu lweziganeko lunokuphindwa amaxesha amaninzi ngaphakathi komjikelo wesiqingatha se-INPUT power waveform ye-LED semaphore, nto leyo ekhokelela ekukhanyeni kwe-LED ebonakalayo.
Ixesha lokuthumela: Matshi-11-2022
