Imwe mu ngingo zishyushye vuba ahaLEDinganda zitanga amashanyarazi ziyobowe na buri gihe amashanyarazi. Kuki LED igomba gutwarwa numuyoboro uhoraho? Kuki udashobora guhora utwara amashanyarazi?

Mbere yo kuganira kuriyi ngingo, tugomba mbere na mbere gusobanukirwa impamvu LED igomba gutwarwa numuyoboro uhoraho?

Nkuko bigaragazwa nu murongo wa LED IV ku gishushanyo (a), iyo voltage yimbere ya LED ihindutse kuri 2,5%, umuyoboro unyura muri LED uzahinduka hafi 16%, naho voltage yimbere ya LED igira ingaruka byoroshye na ubushyuhe. Itandukaniro ryubushyuhe hagati yubushyuhe bwo hejuru nubushyuhe bwo hasi bizanatuma icyuho cya voltage gihinduka hejuru ya 20%. Mubyongeyeho, urumuri rwa LED ruringaniza neza na ruguru yimbere ya LED, kandi itandukaniro rirenze urugero rizatera impinduka zirenze urugero, Kubwibyo, LED igomba gutwarwa numuyoboro uhoraho.

Ariko, LED irashobora gutwarwa nimbaraga zihoraho? Mbere ya byose, ukuyemo ikibazo cyo kumenya niba imbaraga zihoraho zingana nubucyo buhoraho, birasa nkaho bishoboka kuganira gusa kubijyanye nigishushanyo mbonera cyumushoferi uhoraho uhereye kumihindagurikire ya LED IV hamwe nubushyuhe bwo kugabanuka. None se kuki abakora ibinyabiziga bya LED badashushanya mu buryo butaziguye abashoferi ba LED bafite moteri ihoraho? Hariho impamvu nyinshi zirimo. Ntabwo bigoye gushushanya umurongo uhoraho. Igihe cyose ihujwe na MCU (microcrolle unit) kugirango tumenye ibisohoka n’umuvuduko, kugenzura PWM (pulse ubugari bwa modulisiyo) yinshingano ukoresheje kubara gahunda, no kugenzura imbaraga zisohoka kumurongo wubururu uhoraho kumurongo (b) . kugirira nabi. Mubyongeyeho, ubushyuhe bwa LED buranga ni coefficente yubushyuhe bubi. Iyo ubushyuhe buri hejuru, turateganya kugabanya ibisohoka kugirango dukomeze ubuzima burebure bwa LED. Nyamara, uburyo buhoraho bwububasha buvuguruzanya nibi bitekerezo. Muri LED yubushyuhe bwo hejuru, umushoferi wa LED yongerera ibyasohotse kuko ibona voltage yo hasi.

Urebye ibintu byavuzwe haruguru, umushoferi wa “quasi uhoraho” LED itanga abakiriya umurongo mugari wa voltage / ibisohoka niwo muti uhenze cyane kubakiriya. Imbaraga zihoraho LED umushoferi urangwa nibicuruzwa bimwe na bimwe bya Mingwei yemeza igishushanyo mbonera cyubwoko nkubu buhoraho, bugamije guha abakiriya ibintu byinshi bya voltage / ibisohoka. Ntishobora gusa guhaza ibyo abakoresha bakeneye gusa, ariko kandi irinda kwiyongera kw'ibiciro biterwa no gushushanya cyangwa ibibazo biterwa n'ibiranga LED, ndetse bigatera no kunanirwa kw'itara, Gutanga ibicuruzwa byinshi byashushanyije bifite imbaraga zihoraho bishobora kuvugwa ko ari igisubizo cyiza cyane cyo gutanga amashanyarazi ya LED ku isoko.