Imodzi mwamitu yotentha kwambiri posachedwapaLEDmakampani magetsi amatsogozedwa nthawi zonse mphamvu pagalimoto. Chifukwa chiyani ma LED amayenera kuyendetsedwa ndi magetsi nthawi zonse? Chifukwa chiyani simungathe kuyendetsa mphamvu nthawi zonse?

Tisanakambirane mutuwu, choyamba tiyenera kumvetsetsa chifukwa chake ma LED amayenera kuyendetsedwa ndi magetsi nthawi zonse?

Monga momwe ma curve a LED IV pachithunzichi (a), mphamvu yakutsogolo ya LED ikusintha ndi 2.5%, yomwe ikudutsa mu LED isintha pafupifupi 16%, ndipo magetsi akutsogolo a LED amakhudzidwa mosavuta ndi kutentha. Kusiyana kwa kutentha pakati pa kutentha kwakukulu ndi kutsika kungapangitse kusiyana kwa kusintha kwa magetsi kupitirira 20%. Kuonjezera apo, kuwala kwa LED kumayenderana mwachindunji ndi kutsogolo kwa LED, ndipo kusiyana kwakukulu kwamakono kudzachititsa kusintha kwa kuwala kochuluka, Choncho, LED iyenera kuyendetsedwa ndi nthawi zonse.

Komabe, kodi ma LED angayendetsedwe ndi mphamvu yosalekeza? Choyamba, kupatula nkhani ngati mphamvu nthawi zonse ndi yofanana ndi kuwala kosalekeza, zikuwoneka kuti n'zotheka kungokambirana za kapangidwe ka dalaivala wamagetsi nthawi zonse kuchokera pakusintha kwa LED IV ndi kutentha kwapakati. Ndiye bwanji opanga madalaivala a LED sapanga mwachindunji madalaivala a LED okhala ndi magetsi osasintha? Pali zifukwa zambiri. Sizovuta kupanga chingwe chamagetsi chokhazikika. Malingana ngati ikuphatikizidwa ndi MCU (micro controller unit) kuti izindikire mphamvu yamagetsi ndi yamakono, kuwongolera kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kake. ), kutulutsa mphamvu kosalekeza kumatha kutheka, koma njira iyi imawonjezera ndalama zambiri, Komanso, ngati kuwonongeka kwakanthawi kochepa kwa LED, dalaivala wanthawi zonse wa LED amawonjezera pakali pano chifukwa chozindikira kutsika kwamagetsi, komwe kungayambitse kuvulaza kwakukulu. Kuphatikiza apo, mawonekedwe a kutentha kwa LED ndi gawo loyipa la kutentha. Kutentha kukakhala kopitilira muyeso, timayembekeza kuchepetsa zomwe timatulutsa kuti tisunge magwiridwe antchito apamwamba a LED. Komabe, njira yamphamvu yosalekeza imatsutsana ndi kulingalira uku. Mu ntchito zotentha kwambiri za LED, dalaivala wa LED amawonjezera zotulukapo chifukwa amazindikira voteji yotsika.

Poganizira zomwe zili pamwambazi, "quasi constant power" yoyendetsa galimoto ya LED yomwe imapatsa makasitomala mitundu yambiri yamagetsi / zotulutsa zamakono ndiye njira yotsika mtengo kwambiri kwa makasitomala. Nthawi zonse mphamvu LED dalaivala chizindikiro ndi mankhwala ena a Mingwei utenga kamangidwe wokometsedwa wa mtundu uwu wa mphamvu zonse, amene cholinga chake ndi kupereka makasitomala osiyanasiyana voteji / linanena bungwe panopa. Sizingakwaniritse zosowa za ogwiritsa ntchito, komanso kupewa kuwonjezereka kwa mtengo komwe kumachitika chifukwa cha kapangidwe kake kapena zovuta zomwe zimayambitsidwa ndi mawonekedwe a LED, komanso kupangitsa kulephera kwa nyali, Kupereka mitundu yambiri yamapangidwe omwe ali ndi mphamvu zofananira zokhazikika zitha kunenedwa kukhala. njira yabwino kwambiri yothetsera magetsi a LED pamsika.