Imwe yenyaya dzinopisa kwazvo munguva pfupi yapfuuraLEDindasitiri yekugovera magetsi inotungamirwa inogara ichityaira magetsi. Sei ma LED achifanira kufambiswa neanogara aripo? Sei usingakwanise kugara uchityaira magetsi?

Tisati takurukura nyaya iyi, tinofanira kutanga tanzwisisa kuti sei ma LED achifanira kufambiswa neanogara aripo?

Sezvinoratidzwa ne LED IV curve mumufananidzo (a), kana kumberi kwe LED kunoshanduka ne 2.5%, ikozvino kupfuura ne LED inoshanduka ne 16%, uye mberi kwe LED kunokanganiswa nyore tembiricha. Musiyano wetembiricha pakati petembiricha yakakwira uye yakaderera inotoita kuti gap rekuchinja kwevoltage rive rakakwirira kupfuura 20%. Mukuwedzera, kupenya kwe LED kwakanyatso kuenzanirana kune mberi ikozvino kwe LED, uye kusiyana kwakanyanya kwemazuva ano kuchakonzera kupenya kwakanyanya kushanduka, Naizvozvo, LED inofanira kutungamirirwa nekusingaperi ikozvino.

Nekudaro, ma LED anogona kufambiswa nesimba risingaperi? Chekutanga, tisingabatanidzi nyaya yekuti simba risingaperi rakaenzana nekupenya nguva dzose, zvinoita sekunge zvinogoneka kungokurukura magadzirirwo emutyairi wemagetsi anogara aripo kubva pakuona kwekuchinja kwe LED IV uye tembiricha curve. Zvino nei vagadziri ve LED mutyairi vasingagadziri zvakananga madhiraivha e LED ane simba rinogara riripo? Pane zvikonzero zvakawanda zvinobatanidzwa. Hazvisi zvakaoma kugadzira tambo yemagetsi nguva dzose. Chero bedzi yakasanganiswa neMCU (micro controller unit) kuona inobuda voltage uye yazvino, kudzora iyo PWM (pulse wide modulation) mutoro kutenderera kuburikidza nekuverenga chirongwa, uye kutonga simba rinobuda pane yebhuruu inogara simba curve mumufananidzo (b ), simba rinogara richibuda rinogona kuwanikwa, asi nzira iyi inowedzera mari yakawanda, Uyezve, kana kukuvara kwe-LED pfupi-circuit, simba rinogara richiita mutyairi we LED rinowedzera ikozvino nekuda kwekuona magetsi akaderera, anogona kukonzera kukuvadza. Uye zvakare, iyo LED tembiricha hunhu ndeye yakaipa tembiricha coefficient. Kana tembiricha yakakwira, isu tinotarisira kudzikisa kuburitsa ikozvino kuchengetedza hupenyu hwepamusoro hwekuita kwe LED. Nekudaro, iyo inogara ichiita simba nzira inopesana nekufunga uku. Mu LED yakakwirira-tembiricha maapplication, mutyairi we LED anowedzera kubuda ikozvino nekuti inoona yakaderera voltage.

Tichifunga nezvezvinhu zviri pamusoro, iyo "quasi inogara simba" LED mutyairi inopa vatengi huwandu hwakawanda hwemagetsi / ikozvino kubuda ndiyo inodhura-inoshanda mhinduro kune vatengi. Iyo inogara iine simba LED mutyairi inocherechedzwa nezvimwe zvigadzirwa zveMingwei inotora yakagadziridzwa dhizaini yerudzi urwu rwesimba rinogara riripo, iro rine chinangwa chekupa vatengi huwandu hwakasiyana hwemagetsi / ikozvino kubuda. Haikwanise kuzadzisa zvinodiwa nevashandisi chete, asiwo kudzivirira kuwedzera kwemutengo kunokonzerwa nekupfuura dhizaini kana dambudziko rinokonzereswa nemhando dze LED, uye kunyange kukonzera kutadza kwemwenje, Kupa huwandu hwakawanda hwezvigadzirwa zvekugadzira zvine simba risingaperi rinogona kunzi iyo inonyanya kushanda mhinduro yeLED yekutyaira magetsi ekupa pamusika.