Ubale pakati pa ubwino wa nyali za LED ndi magetsi
LED ili ndi ubwino wambiri monga kuteteza chilengedwe, moyo wautali, mphamvu ya photoelectric yapamwamba (kuwunika kwamakono kwafika ku 130LM / W ~ 140LM / W), kukana zivomezi, ndi zina zotero. Mwachidziwitso, moyo wautumiki wa LED ndi ola la 100,000, koma m'njira yeniyeni yogwiritsira ntchito, ena opanga zowunikira za LED alibe chidziwitso chokwanira kapena kusankha kosayenera kwa mphamvu yoyendetsa galimoto ya LED kapena kutsata mwachimbulimbuli mtengo wotsika. Zotsatira zake, moyo wa zinthu zowunikira za LED umafupikitsidwa kwambiri. Moyo wa nyali zosauka za LED ndi zosakwana maola 2000 komanso otsika. Chotsatira chake ndi chakuti ubwino wa nyali za LED sungawonetsedwe mu ntchito.
Chifukwa cha kusinthika kwa ma LED ndi kupanga, mawonekedwe amakono ndi magetsi a ma LED opangidwa ndi opanga osiyanasiyana komanso ngakhale wopanga yemweyo mugulu lomwelo lazinthu amakhala ndi kusiyana kwakukulu kwapayekha. Kutengera mafotokozedwe amphamvu kwambiri amphamvu ya 1W yoyera ya LED monga chitsanzo, molingana ndi malamulo apano ndi ma voliyumu a LED, kufotokozera mwachidule kumaperekedwa. Nthawi zambiri, voteji yakutsogolo ya 1W yoyera yoyera imakhala pafupifupi 3.0-3.6V, ndiye kuti, ikalembedwa kuti 1W LED. Pamene magetsi akuyenda pa 350 mA, mphamvu yodutsa pamtunda ikhoza kukhala 3.1V, kapena ikhoza kukhala mfundo zina pa 3.2V kapena 3.5V. Kuonetsetsa moyo wa 1WLED, wopanga wamkulu wa LED amalimbikitsa kuti fakitale ya nyale igwiritse ntchito 350mA pano. Kutsogolo kwa LED kukafika pa 350 mA, kuwonjezereka pang'ono kwa magetsi akutsogolo kudutsa ma LED kumapangitsa kuti kutsogolo kwa LED kukwera kwambiri, zomwe zimapangitsa kutentha kwa LED kukwera motsatana, motero kumathandizira kuwola kwa kuwala kwa LED. Kufupikitsa moyo wa LED komanso kuwotcha LED ikakhala yayikulu. Chifukwa cha mphamvu yamagetsi ndi kusintha kwamakono kwa LED, zofunikira zokhazikika zimayikidwa pamagetsi oyendetsa magetsi.
Dalaivala wa LED ndiye chinsinsi cha zowunikira za LED. Zili ngati mtima wa munthu. Kuti mupange zowunikira zapamwamba za LED zowunikira, ndikofunikira kusiya magetsi okhazikika kuti muyendetse ma LED.
Zomera zambiri zopangira ma LED zamphamvu kwambiri tsopano zimasindikiza ma LED ambiri mofananira komanso motsatizana kuti apange 20W, 30W kapena 50W kapena 100W kapena ma LED apamwamba kwambiri. Ngakhale phukusili lisanachitike, amasankhidwa mosamalitsa ndikufananizidwa, pali ma LED angapo ndi mazana ambiri chifukwa cha kuchuluka kwamkati. Chifukwa chake, zida zophatikizira zamphamvu zamphamvu za LED zimakhalabe ndi kusiyana kwakukulu pamagetsi ndi apano. Poyerekeza ndi LED imodzi (nthawi zambiri kuwala kumodzi koyera, kuwala kobiriwira, kuwala kwa buluu yogwiritsira ntchito magetsi a 2.7-4V, kuwala kofiira kamodzi, kuwala kwachikasu, kuwala kwa lalanje kugwira ntchito voteji ya 1.7-2.5V) ndizosiyana kwambiri!
Pakalipano, zopangira nyali za LED (monga ma guardrail, makapu a nyali, nyali zowonetsera, magetsi a m'munda, ndi zina zotero) zopangidwa ndi opanga ambiri amagwiritsa ntchito kukana, mphamvu ndi kuchepetsa magetsi, ndiyeno kuwonjezera diode ya Zener kuti apereke mphamvu ku ma LED. Pali zolakwika zazikulu. Choyamba, ndi inefficient. Zimawononga mphamvu zambiri pazitsulo zotsika pansi. Ikhoza ngakhale kupitirira mphamvu yogwiritsidwa ntchito ndi LED, ndipo sichingapereke galimoto yamakono. Pomwepo ikakhala yayikulu, mphamvu yomwe imagwiritsidwa ntchito pazitsulo zotsika pansi ingakhale yokulirapo, ma LED apano sangatsimikizidwe kupitilira zofunikira zake zogwirira ntchito. Popanga chinthucho, magetsi odutsa pa LED amagwiritsidwa ntchito kuyendetsa magetsi, zomwe zimawononga kuwala kwa LED. Kuwala kwa LED kumayendetsedwa ndi kukana ndi capacitance kutsika pansi, ndipo kuwala kwa LED sikungakhazikitsidwe. Mphamvu yamagetsi ikatsika, kuwala kwa LED kumakhala mdima, ndipo mphamvu yamagetsi ikakwera, kuwala kwa LED kumakhala kowala. Zoonadi, mwayi waukulu wotsutsa ndi capacitive ma LED oyendetsa galimoto ndi mtengo wotsika. Choncho, makampani ena owunikira a LED amagwiritsabe ntchito njirayi.
Opanga ena, kuti achepetse mtengo wazinthuzo, pogwiritsa ntchito magetsi okhazikika kuti ayendetse ma LED, amabweretsanso mafunso angapo okhudzana ndi kuwala kosagwirizana kwa LED iliyonse pakupanga misa, LED silingagwire ntchito bwino kwambiri, etc. .
Kuyendetsa gwero lamakono ndiye njira yabwino kwambiri yoyendetsera LED. Imayendetsedwa ndi gwero lanthawi zonse. Sichiyenera kulumikiza ma resistors omwe akukhalapo pakali pano. Zomwe zikuyenda mu LED sizikhudzidwa ndi kusintha kwa magetsi akunja, kusintha kwa kutentha kozungulira, ndi magawo a LED. Zotsatira zake ndikusunga mawonekedwe amakono ndikupereka kusewera kwathunthu kuzinthu zosiyanasiyana zabwino za LED.