Ii-Pros and Cons of lead edge dimming kunye ne-trailing edge dimming

I-leading-edge dimming (i-lead-edge phase-cut dimming) kunye ne-trailing-edge dimming (i-trailing-edge phase-cut dimming) zimbini iiteknoloji ze-dimming ezisekelwe kwisigaba, ezisetyenziselwa ukukhanya kwe-LED kunye neenkqubo zokukhanyisa zendabuko.Ngezantsi luhlalutyo oluthelekisayo lwezi mbini zimbini.dimmerubuchwepheshe:

1.Umgaqo wokuSebenza

Ukufiphala komphetho:

Ukunqunyulwa kwe-voltage kwenzeka ekuqaleni kwesiqingatha-amaza omjikelezo we-AC (isigaba 0 °). Ngokulibazisa ukuqaliswa kwexesha lokuqhuba i-thyristors (oko kukuthi, ukulungelelanisa i-angle yokuqhuba), i-voltage esebenzayo kuwo wonke umthwalo ilawulwa, ngaloo ndlela ilungisa ukukhanya. Umzekelo, okukhona ukulibaziseka okukhulu kwi-engile yokuqalisa, kokukhona liba lifutshane ixesha lokuqhuba, kunye nokuthoba ukuqaqamba.

Ukucutheka komphetho:

Ukunqunyulwa kwe-voltage kwenzeka kufuphi nokuphela kwesiqingatha-amaza omjikelezo we-AC (isigaba se-180 °). Ngokucima i-MOSFETs okanye ixesha lokuqhuba ii-IGBTs ngaphambili, ukufiphala kuyafezekiswa.nciphisa ukukhanya.

2.Amacandelo angundoqo

Ukufiphala komphetho:

Isebenzisa i-thyristors (i-SCR / i-Triac) njengezixhobo zokutshintsha, ezizizixhobo ezilawulwa kancinci (zinokulawula kuphela ukuqhuba, ungacimi ngokusebenzayo).

Ukucutheka komphetho:

Isebenzisa ii-MOSFET okanye ii-IGBT njengezixhobo zokutshintsha, ezizizixhobo ezilawulwa ngokupheleleyo (zinokulawula ngokusebenzayo zombini ukuqhuba kunye nokucima).

3.Uthelekiso lweNtsebenzo

4. Isishwankathelo seePros and Cons

I-Lead-edge Dimming Pros:

Ixabiso eliphantsi, itekhnoloji evuthiweyo, ehambelanayo neenkqubo ezikhoyo ze-thyristor dimming (umzekelo, incandescent yendabukoi-dimmers).

I-Lead-edge Edge Cons Dimming Cons:

Inokubangela ukudayiza kwe-LED, ukuphazamiseka kwe-electromagnetic, kwaye isenokungacimi ngokupheleleyo phantsi kwemithwalo ephantsi.

I-Trailing-edge Dimming Pros:

Ukufiphala okugudileyo, akukho kuqhwanyaza, kuxhasa imithwalo ye-capacitive (umzekelo, abaqhubi be-LED), kwaye inokucima ngokupheleleyo.

I-Trailing-edge Dimming Cons:

Ixabiso eliphezulu, ukungena kwimarike esezantsi, ubukhulu becala kusetyenziselwa ukufiphala kwesibane esinesibane esinamandla aphantsi.

5.Iimeko zeSicelo

Ukufiphala komphetho:

Ifanele iiprojekthi zokubuyisela izibane zesiNtu (umzekelo, ukutshintshwa kweebhalbhu ze-incandescent) kunye neenkqubo zokukhanya zokuthengisa zamandla aphezulu (kufuneka zihlangabezane neemfuno zomthwalo omncinci).

Ukucutheka komphetho:

Ifanele izibane ze-LED ezinamandla aphantsi (umzekelo, izibane zedesika, izibane zasekhaya ezingatshatanga) kunye neemeko ezifuna umgangatho ophezulu wobumnyama (umz., iimyuziyam, iihotele).

6.IiNdlela zoPhuhliso lobuGcisa

I-Leading-edge dimming ihlala ilawula kwimarike ngenxa yeenzuzo zayo zeendleko, kodwa i-trailing-edge dimming ifumana ngokuthe ngcembe kwi-high-precision dimming izicelo.

7.Isiphelo

I-Leading-edge dimming kunye ne-trailing-edge dimming nganye ineenzuzo kunye neengxaki zayo kwaye ifanelekile kwiimeko ezahlukeneyo zesicelo. I-Leading-edge dimming inexabiso elisebenzayo kwaye iyahambelana, iyenza ilungele ukulungiswa kokukhanyisa kwendabuko kunye neenkqubo zamandla aphezulu. I-Trailing-edge dimming inikezela ngokukhanya okugudileyo, okungaqhwayiziyo kwaye kufanelekile kumandla aphantsi kunye neemfuno zobumnyama obuchanekileyo. Njengoko iteknoloji ihambela phambili, ukusetyenziswa kwe-trailing-edge dimming kwiindawo ezichanekileyo eziphezulu zokunciphisa ngokukhawuleza kuya kwanda.