Kuwunika kwa AC -free LED's Constant Current Control Technology Analysis

LED yopanda AC idalephera kupeŵa kusanthula kwaukadaulo kwanthawi zonse 1. AC-free LED sikusintha kofunikira kwa chipangizocho. Mwanjira ina, palibe chip cha LED chomwe chilibe makina ogwirira ntchito a AC Electric Farm. LED yopanda AC yomwe ilipo tsopano ndi chipangizo chokonzedwa mwapadera mu chipset chamkati. Ndiko kusintha kwa mkati mwa chipangizo cha LED. Zoonadi Mlingo waukadaulo siwophweka. Kuyambitsidwa kwa AC -free LED nthawi zambiri amatchulidwa ndi Seoul Semiconductor. Zitha kuwoneka kuti ndi njira yachikhalidwe yokonzanso mlatho kuti athetse vuto la kulumikizana pavuto lotchedwa DC LED vuto lamagetsi. Zikuwoneka kuti phindu ndiloti diode yokonzanso imachotsedwa, koma kukana kwa LED kumakhala kochepa. Pamene gululi ili pachimake chachikulu, sikuti phindu ndilofunika. Chifukwa ndi kutsanzira kwa rectifier mlatho dera, theka yokha ya panopa akuyenda pa mkono anayi mlatho, ndipo DC katundu amayenda lonse panopa, kuchititsa kugawa panopa kukwezedwa kwa ma LED pagulu lililonse. Ndipo kuwala kotulutsa mphamvu, monga kupitilira muyeso kupangitsa kuwola kwa kuwala ndikusokoneza moyo. N’zosavuta kuthetsa. Mwachidule, DC LED imachotsedwa. Yang'anani mozama derali, ndipo tsopano lakhala ma LED abwino komanso osinthira gulu lililonse. Ndipotu, simuyenera kukhala ovuta kwambiri poyamba. 2. AC-free LED sichimapewa ukadaulo wofunikira nthawi zonse. Kuyambira koyambirira, kuwala kwa AC LED sikuli kokwanira kuposa ma LED wamba. Akuti ndi gawo lachitukuko. Wolembayo amakhulupirira kuti maziko a tchipisi ta LED tomwe ndi ofanana. Chinthu chachikulu choletsa kuchuluka kwa kuwala pa tile ndi mtundu wa dera la mlatho wokonzanso. Tangoganizani kuti gulu limodzi lokha la ma LED limatha kugwira ntchito moyenera, ndikupangitsa kuwala kokwanira, ndipo 80% mwa magulu anayi otsalawo amagwira ntchito m'mawu olembedwa mopanda kuwala. Ziribe kanthu momwe mungapangire nayo, mwachilengedwe imakhala yotsika kuposa ya kuwala kwa LED wamba. Njira yabwino ndikusiya njira yamilatho yopanda nzeru. Palibe ntchito yoteteza nthawi zonse mu AC -free LED. Ikagwiritsidwa ntchito, iyenera kulumikizidwa ndi kukana kuyenda. Komabe, pamene panopa pa malire a magetsi voteji ndi ochepa, m`pofunika ntchito otsika kuwala zotsatira boma la m`munsi panopa pamene yachibadwa kapena otsika voteji. Malire okana ndi njira yochepetsera chitetezo. Sizingokhala ndi zolakwika zokha, komanso zimadalira mphamvu zogwiritsira ntchito mphamvu kuti zigwire ntchito, kuti mphamvu yogwiritsira ntchito mphamvu ikhale yochepa. Ngati mukufuna kuwonjezera PTC kuti muthane ndi vuto lanthawi zonse la LED, simukudziwa mokwanira za momwe gawolo likugwirira ntchito. PTC imagwiritsidwa ntchito kwambiri poteteza matenthedwe komanso chitetezo chamafuta. Pamene panopa mu dera ndi lalikulu kwambiri, pamene PTC ifika kutentha kwa nyumbayo pambuyo kutentha, kukana mtengo umakwera kwambiri kuti kuchotsedwa. Dongosolo lochotsa mumtundu wa TV limaugwiritsa ntchito kuti apange mpweya waukulu wotsitsa. Demagnetic. Pamene PTC resistor imakhudzidwa ndi kutentha kozungulira, kutentha kudzatsegulidwa pamene kutentha kumakhala kochuluka kuposa malo okhalamo, omwe angakhale nawo pakusintha chitetezo cha kutentha. Ngati mukufuna kudalira mawonekedwe abwino a kutentha kwa PTC kukana kutetezedwa kwanthawi zonse kwa LED: Choyamba, kukana kwa PTC kumadutsa pano, pali njira yotenthetsera nthawi yotentha. Zamakono zawononga kale LED. Chachiwiri, kutentha kwapawiri kwa PTC resistor kumatha kuwongolera nthawi zonse. Ndiye zotsatira za kutentha kwakukulu kwa chilengedwe ndi kutsika kungasinthe madigiri angapo kuti "mtengo wanthawi zonse" usinthe kukhala wopanda tanthauzo. Kodi ndizotheka kuti zida wamba za LED zithanso kukhala zosavuta kuyenda pakali pano? Tsoka ilo. Ndipo nthawi zambiri kuyankhulana kosalekeza kumakhala kovuta kuposa DC nthawi zonse. M'malo mwake, pakhoza kukhala mitundu yonse ya chithandizo chapamwamba cha Product. M'malo mwa mphamvu, opanga LED adzakhala amphamvu kwambiri ponena za teknoloji yozungulira, ndipo ndi bwino kuyang'ana pakupanga zinthu zotsika mtengo komanso zowunikira kwambiri za LED.