Kodi LED imapanga bwanji kuwala?

Electroluminescence ndi njira yomwe ma LED (Light Emitting Diodes) amapangira kuwala. Umu ndi momwe zimagwirira ntchito:

1-Semiconductor Material: Zinthu za semiconductor, nthawi zambiri zosakanikirana za zinthu monga phosphorous, arsenic, kapena gallium, zimagwiritsidwa ntchito kupanga LED. Magawo onse a n-mtundu (negative), omwe ali ndi ma elekitironi ochulukirapo, ndipo dera la p-mtundu (lomwe lili bwino), lomwe lili ndi kusowa kwa ma elekitironi (mabowo), amapangidwa pamene semiconductor ndi doped ndi zonyansa.

2-Electron-Hole Recombination: Ma electron ochokera kumalo amtundu wa n amakakamizika kudera la p-mtundu pamene magetsi aikidwa pa LED. Ma elekitironi awa amaphatikizananso ndi mabowo amtundu wa p.

3-Photon Emission: Mphamvu zimatulutsidwa ngati kuwala (mafotoni) panthawiyi yophatikizanso. Mphamvu yamagetsi ya semiconductor yomwe imagwiritsidwa ntchito imatsimikizira mtundu wa kuwala komwe kumatulutsidwa. Kuwala kumabwera mumitundu yosiyanasiyana malinga ndi zinthu.

4-Kugwira Ntchito Mwachangu: Popeza kuti mphamvu zambiri mu ma LED zimasinthidwa kukhala kuwala osati kutentha-vuto lofala ndi mababu ochiritsira ochiritsira-ma LED ndi opambana kwambiri.

5-Encapsulation: Mwa kuyika ma LED mu utomoni womveka bwino kapena lens, kuwala komwe kumatulutsa kumakhala bwino nthawi zambiri. Izi zingathandizenso kufalitsa kuwala ndikupangitsa kuti kuwoneke bwino.

Poyerekeza ndi njira zowunikira zowunikira, njira iyi imathandizira ma LED kuti azipereka kuwala kwakukulu, kokhazikika pomwe akugwiritsa ntchito mphamvu zochepa.

Ngakhale amakhala ndi moyo wautali komanso wogwira ntchito bwino, magetsi a LED amatha kukhala ndi zovuta zingapo, monga:
1) Kusiyanasiyana kwa Kutentha kwa Mtundu: Kuunikira kosagwirizana m'dera kungabwere chifukwa cha kusintha kwa kutentha kwamitundu pakati pa magulu a nyali za LED.

2) Kuthwanima: Mukagwiritsidwa ntchito ndi ma switch osagwirizana ndi dimmer kapena pakakhala zovuta ndi magetsi, magetsi ena a LED amatha kuthwanima.

3) Kutentha kwakukulu: Ma LED amatulutsa kutentha pang'ono kusiyana ndi magetsi ochiritsira, koma kutentha kosakwanira kungayambitse kutentha, zomwe zingachepetse moyo wa mababu.

4) Mavuto Oyendetsa: Kuti muwongolere mphamvu, magetsi a LED amafunikira madalaivala. Kuwala kumatha kuthwanima, kuzimiririka, kapena kuyimitsa kugwira ntchito ngati dalaivala sakuyenda bwino kapena ndi wotsika kwambiri.

5) Kugwirizana kwa Dimming: Mavuto amachitidwe amatha kubwera chifukwa magetsi ena a LED samagwirizana ndi masiwichi apano a dimmer.

6) Mphepete mwa Beam Angle: Kuunikira kosagwirizana kungabwere kuchokera ku nyali za LED zokhala ndi ngodya yamtengo wapatali, zomwe sizingakhale zoyenera pa ntchito zambiri.

7) Mtengo Woyamba: Ngakhale nyali za LED zimapulumutsa ndalama pakapita nthawi, zimatha kuwononga ndalama zambiri kugula poyamba kuposa mababu wamba.

8)Nkhawa Zachilengedwe: Ngati sizitayidwa moyenera, fufuzani kuchuluka kwa zinthu zoopsa monga lead kapena arsenic zomwe zimapezeka mumagetsi ena a LED zitha kuyika chilengedwe pachiwopsezo.

9) Kusiyanasiyana kwa Ubwino: Pali katundu wambiri wa LED pamsika, ndipo si onse omwe amapangidwa molingana ndi miyezo yomwe imayambitsa kusiyanasiyana kwa moyo wautali ndi magwiridwe antchito.

10) Kusagwirizana ndi Zosintha Zina: Mababu ena a LED, makamaka omwe amapangidwira mababu anthawi zonse, samatha kugwira ntchito bwino pamakonzedwe apadera.

Kusankha zinthu zamtengo wapatali, kuonetsetsa kuti zikugwira ntchito ndi machitidwe amakono, ndipo malinga ndi malangizo oyikapo nthawi zambiri ndizofunikira kuthetsa mavutowa.

Pali mizere yambiri yowunikira yomwe mungasankhe pamsika pano, mongaChithunzi cha COBMzere wa CSP, wosiyana ndiChithunzi cha SMD, tiuzeni ngati mukufuna zitsanzo zoyezetsa.