Pamene kuwala kwatsopano kumalowa pamsika, vuto la stroboscopic linayambanso. Miller I wa PNNL adati: Kukula kwa kuwala kwa LED ndikokulirapo kuposa nyali ya incandescent kapena nyali ya fulorosenti. Komabe, mosiyana ndi nyali za HID kapena fulorosenti, kuyatsa kolimba kwa SSL ndi chipangizo cha DC, kutanthauza kuti pamene magetsi okhazikika aperekedwa, LED ikhoza kuyatsa popanda kuphulika.
Kwa mabwalo osavuta a LED omwe sagwiritsa ntchito chosinthira chosinthira pakali pano, kuwala kwa LED kumasintha ndi kuzungulira kwapano. Kuyendetsa kumagwira ntchito ziwiri, kupereka mphamvu ndi kukonza. Njira yosinthira kuchoka pagalimoto kupita ku LED, kusinthasintha kwapano kupita kumayendedwe apano kumatulutsa ma voliyumu ndi ma ripples apano. Mtundu woterewu umakhalapo kawiri kawiri kuchuluka kwamagetsi operekera, omwe ndi 120H ku United States. Pali mgwirizano wofananira pakati pa kutulutsa kwa LED ndi mawonekedwe amtundu wa drive. Dimming ndi chifukwa china cha kufiyira. Ma dimmers achikhalidwe, monga TRIAC dimmers (gawo lamagetsi lomwe limatha kuyendetsa njira ziwiri), sinthani magetsi ndikuchepetsa kutulutsa kwa kuwala powonjezera nthawi yotseka panthawi yosinthira. Kwa ma LED, ndikwabwino kugwiritsa ntchito pulse wide modulation (PWM) kusintha ma LED pama frequency opitilira 200 Hz. Komabe, Benya anatsindika kuti: "Ngati mumagwiritsa ntchito kusinthasintha kwa pulse pafupipafupi kwambiri, monga mafupipafupi amagetsi, kumayambitsa kuphulika kwakukulu."
Kusanthula kwanzeru kwa LED stroboscopic:
Pali zotheka zinayi zopangitsa kuti gwero la kuwala kwa LED liziyenda kapena kuyatsa ndi kuzimitsa.
1) Mkanda wa nyali wa ED sukugwirizana ndi magetsi oyendetsa galimoto, ndipo mkanda umodzi wa 1W umapirira panopa: 280-30mA.
Mphamvu yamagetsi: 3.0-3.4V, ngati chipangizo cha nyali sichikhala ndi mphamvu zokwanira, chidzachititsa kuti gwero la kuwala lizigwedezeka, ndipo panopa ndipamwamba kwambiri.
Ikalandiridwa, imayatsa ndikuzimitsa. Pazovuta kwambiri, waya wagolide kapena waya wamkuwa womwe wamangidwa mu mkanda wa nyali udzawotchedwa, zomwe zimapangitsa kuti nyaliyo isayatse.
2) Zitha kukhala kuti magetsi oyendetsa galimoto athyoka, bola ngati asinthidwa ndi magetsi ena oyendetsa bwino, sangawale.
3) Ngati dalaivala ali ndi ntchito yoteteza kutentha kwambiri, ndipo kutentha kwa nyali sikungathe kukwaniritsa zofunikira, chitetezo cha kutentha kwa dalaivala chimayamba.
Padzakhala chodabwitsa komanso chonyezimira pogwira ntchito, mwachitsanzo: 20W floodlight nyumba imagwiritsidwa ntchito kusonkhanitsa nyali za 30W, palibe ntchito yowononga kutentha. Zidzakhala chonchi ngati zitachitika.
4) Ngati nyali yakunja imakhalanso ndi chodabwitsa chowunikira ndi kuzimitsa, ndiye kuti nyaliyo idzasefukira ndipo zotsatira zake zidzakhala zowala ndipo sizidzayatsa. Mikanda ya nyali ndi dalaivala zidzathyoledwa. Ingosinthani gwero la kuwala.
Momwe mungachepetse stroboscopic
Chinsinsi chochepetsera stroboscopic flicker ndikuyendetsa, komwe kumatha kuthetsedwa popereka mphamvu yosasunthika, yosasunthika. Komabe, opanga amayenera kuyeza zinthu zina kuti ayendetse mtengo, kukula, kudalirika komanso kuchita bwino pothandizira zinthu za LED. Ree akuimiridwa ndi Mark McClear, wachiwiri kwa purezidenti wa engineering. Kugwiritsiridwa ntchito kwa nyaliyo kuyeneranso kuganiziridwa kuti kuwonetsetse kuti chinthucho sichinapangidwe mopitirira muyeso, chifukwa nthawi zina zowunikira stroboscopic flicker ndizovomerezeka, ndipo zina sizovomerezeka. Mcclear adatinso: "Opanga akhala akuyesera kukhathamiritsa zomwe zili zoyenera kugwiritsa ntchito, komanso momwe angapangire strobe kukhala yovomerezeka popanda kuwonjezera mtengo." Ma capacitors amatha kusintha AC ripple kuchokera kwa dalaivala kupita ku LED, koma ilinso ndi zovuta, adatero Benya. Ma capacitor ndi ochulukirapo komanso amamva kutentha". Chifukwa chake, pamalo ocheperako komanso ochepa, monga gwero la kuwala kwa LED, kugwiritsa ntchito ma capacitor sikugwira ntchito ma frequency apamwamba omwe amapitilira ma kilohertz angapo sizitheka nthawi zonse." Benya adati. Kuti muchepetse mayeso ofananira pakati pa ma dimmers ndi ma injini opepuka a LED (ma injini a kuwala kwa LED), EMA (National Electrica/Manufacturers Association) idatulutsa NEMA SSL7A-2013 "Solid State Lighting SSL Phase Cut Dimming. : Basic Compatibility ", ichi ndi chiwongolero chowunikira opanga zinthu ndi opanga. Malingana ngati injini ya dimmer ndi kuwala kwa LED ikukwaniritsa zofunikira, zimagwirizana. Megan, woyang'anira polojekiti ya NEMA, adanena kuti muyezo uwu ndi woyamba pamakampani. ndi kusaina ndi 24 opanga zazikulu. Cholinga cha SSL7A ndikuchotsa kuyesa kofananira kwa nyali ndi ma dimmers. Choyenera kutsindika ndichakuti mulingo uwu umangogwira ntchito kuukadaulo muyeso ukatulutsidwa. Monga idanenera, muyezowo sumapereka njira "yodziwira kugwirizana kwa zinthu zomwe zilipo kapena kuyika injini zowunikira za LED ndi ma dimmers odulidwa".
Nthawi yotumiza: Jan-05-2022
