Masiku ano LED yakhala gawo losafikirika la moyo wathu. Lero, ndikupatsani chidziwitso chachidule cha lingaliro, mawonekedwe, ndi gulu.

Malingaliro a LED

LED (Light Emitting Diode) ndi chipangizo cholimba cha semiconductor chomwe chimasintha magetsi mwachindunji ku Kuwala. Mtima wa LED ndi chipangizo cha semiconductor, chomwe chili ndi mapeto amodzi omwe amamangiriridwa ku scaffold, mapeto ake omwe ali ndi electrode yolakwika, ndipo mapeto ena amalumikizana ndi mapeto abwino a magetsi, kotero kuti chip chonsecho chimatsekedwa mu epoxy utomoni.

Chip cha semiconductor chimapangidwa ndi zigawo ziwiri, imodzi mwa izo ndi p-mtundu wa semiconductor, momwe mabowo amalamulira, ndipo inayo ndi semiconductor yamtundu wa n, yomwe ma electron amalamulira. Koma ma semiconductors awiri akalumikizidwa, "pn junction" imapanga pakati pawo. Pamene magetsi akugwiritsidwa ntchito ku chip kupyolera mu waya, ma electron amakankhidwira ku p-region, kumene amalumikizananso ndi dzenje ndi kutulutsa mphamvu mu mawonekedwe a photons, momwemo ma LED amawala. Ndipo kutalika kwa kuwala kwa kuwala, mtundu wa kuwala, kumatsimikiziridwa ndi zinthu zomwe zimapanga mgwirizano wa PN.

Makhalidwe a LED

Makhalidwe amkati a LED amatsimikizira kuti ndiye gwero labwino kwambiri lowunikira kuti lilowe m'malo mwa gwero lachikhalidwe, lili ndi ntchito zambiri.

• Voliyumu Yaing'ono

Kuwala kwa LED kwenikweni ndi kachipangizo kakang'ono kwambiri komwe kakulungidwa mu epoxy resin, kotero ndi yaying'ono komanso yopepuka kwambiri.

- Kugwiritsa Ntchito Mphamvu Zochepa

Kugwiritsa ntchito magetsi kwa LED ndikotsika kwambiri, nthawi zambiri, magetsi opangira magetsi a LED ndi 2-3.6V.
Zomwe zikugwira ntchito ndi 0.02-0.03A.
Izi zikutanthauza kuti, sizimadya magetsi opitilira 0.1W.

• Moyo Wautumiki Wautali

Ndi magetsi oyenera komanso magetsi, ma LED amatha kukhala ndi moyo wantchito mpaka maola 100,000.

• Kuwala Kwambiri ndi Kutentha Kochepa

• Chitetezo Chachilengedwe

Ma LED amapangidwa ndi zinthu zopanda poizoni, mosiyana ndi nyali za fulorosenti, zomwe zimakhala ndi mercury ndipo zimayambitsa kuipitsa. Atha kusinthidwanso.

• Wamphamvu ndi Wokhalitsa

Ma LED amatsekedwa mokwanira mu epoxy resin, yomwe imakhala yamphamvu kuposa mababu onse ndi machubu a fluorescent.

Gulu la LED

1, Malinga ndi chubu chotulutsa kuwalamtundumfundo

Malinga ndi kuwala emitting mtundu wa kuwala emitting chubu, akhoza kugawidwa mu wofiira, lalanje, wobiriwira (ndi wachikasu wobiriwira, muyezo wobiriwira ndi koyera wobiriwira), buluu ndi zina zotero.
Kuphatikiza apo, ma LED ena amakhala ndi tchipisi tamitundu iwiri kapena itatu.
Malinga ndi kuwala kotulutsa diode wosakanikirana kapena wosakanizidwa ndi zomwaza, zamitundu kapena zopanda mtundu, mitundu yosiyanasiyana ya LED yomwe ili pamwambayi imathanso kugawidwa m'mitundu yowonekera, yopanda utoto, yobalalika yamitundu ndi kubalalika kopanda mitundu kwa mitundu inayi.
Kumwaza ma diode otulutsa kuwala ndi kuwala - ma diode otulutsa angagwiritsidwe ntchito ngati nyali zowunikira.

2.Malinga ndi maonekedwe a kuwalapamwambawa chubu chotulutsa kuwala

Malinga ndi makhalidwe a kuwala emitting pamwamba pa kuwala emitting chubu, akhoza kugawidwa mu nyali kuzungulira, nyali lalikulu, amakona anayi nyali, nkhope kuwala emitting chubu, mbali chubu ndi yaying'ono chubu kwa unsembe pamwamba, etc.
Nyali yozungulira imagawidwa kukhala Φ2mm, Φ4.4mm, Φ5mm, Φ8mm, Φ10mm ndi Φ20mm, etc.
Akunja nthawi zambiri amalemba diode ya Φ3mm yotulutsa kuwala ngati T-1, φ5mm monga T-1 (3/4), ndiφ4.4mm monga T-1 (1/4).

3.Malinga ndikapangidweza diode zotulutsa kuwala

Malinga ndi kapangidwe ka LED, pali epoxy encapsulation, zitsulo m'munsi epoxy encapsulation, ceramic base epoxy encapsulation ndi galasi encapsulation.

4.Malinga ndimphamvu yowala komanso yogwira ntchito

Malinga ndi kuwala kwambiri ndi ntchito panopa lagawidwa mu kuwala wamba LED (zowala kwambiri 100mCD);
Kuwala kowala pakati pa 10 ndi 100mCD kumatchedwa diode yowala kwambiri.
Kugwira ntchito kwa LED wamba kumachokera ku ma mA khumi mpaka makumi angapo a mA, pomwe mphamvu yamagetsi yotsika ya LED ili pansi pa 2mA (kuwala kwake ndi kofanana ndi chubu wamba wotulutsa kuwala).
Kuphatikiza pa njira zomwe zili pamwambazi, palinso njira zogawira ndi chip material ndi ntchito.

Ted: Nkhani yotsatira ikunenanso za LED. Ndi chiyani? Chonde khalani tcheru.