Kupangidwa kwa ma LED (light emitting diode) kunali njira yamitundu yambiri yomwe imaphatikizapo zopereka kuchokera kwa asayansi ambiri. Nazi zina mwazofunikira zakale pakupangidwa kwa ma LED:
Malingaliro oyambilira ndi zoyeserera:
1907:Wasayansi waku Britain HJ Round adawona koyamba kuti semiconductor material silicon carbide (SiC) imatulutsa kuwala pamene magetsi ayikidwa. Ichi chinali choyamba chojambulidwa cha electroluminescence phenomenon of semiconductor materials.
1920s:Wasayansi wa ku Russia, Oleg Losev, anaphunzira mowonjezereka za chochitikacho ndipo anasindikiza pepala lonena za mfundo za ma LED mu 1927, koma sizinakope chidwi ndi anthu ambiri panthawiyo.
Kupanga ma LED othandiza:
1962:Nick Holonyak Jr., injiniya yemwe ankagwira ntchito ku General Electric (GE) panthawiyo, anatulukira kuwala koonekera koyamba kwa LED (LED yofiira). Holonyak amadziwika kuti "Bambo wa ma LED".
1972:M. George Craford, wophunzira wa Holonyak, anapanga LED yoyamba yachikasu ndipo anawongolera kwambiri kuwala kwa ma LED ofiira ndi alalanje. Adapanga zowongolera potengera gallium nitride phosphorous (GaAsP) kuti awonjezere kuwala kwa ma LED kakhumi.
Zaka za m'ma 1970 ndi 1980: Kupita patsogolo kwaukadaulo kunapangitsa kuti pakhale ma LED amitundu yambiri, kuphatikiza obiriwira, achikasu, ndi malalanje.
Kuwonekera kwa Blue LED:
1990s:Asayansi ku Hitachi ndi Nichia, makamaka Shuji Nakamura, anapanga ma LED owala kwambiri. Uku kunali kupambana kwakukulu pogwiritsa ntchito zipangizo za gallium nitride (GaN). Kupangidwa kwa ma LED a buluu kunapangitsa zowonetsera zamitundu yonse ndi ma LED oyera kukhala zotheka.
2014:Shuji Nakamura, Isamu Akasaki, ndi Hiroshi Amano anapatsidwa Mphotho ya Nobel mu Fizikisi chifukwa cha ntchito yawo pa ma LED a buluu.
Kukula kwa ma LED oyera:
Ma LED oyera amapangidwa pophatikiza ma LED a buluu ndi phosphors. Kuwala kwa buluu kuchokera ku LED ya buluu kumakondweretsa phosphor, komwe kumatulutsa kuwala kwachikasu, ndipo kuphatikiza kwa ziwirizi kumatulutsa kuwala koyera.
Kupita patsogolo kwa teknoloji ya LED kwachititsa kuti mitundu yambiri ya LED ikhale ndi mitundu yambiri yamitundu yowoneka bwino, komanso ma ultraviolet ndi infrared ranges. Masiku ano, ma LED amagwiritsidwa ntchito pazinthu zosiyanasiyana, kuphatikizapo zowonetsera, kuyatsa, magetsi owonetsera, ndi mauthenga.
Zotsatirazi zikuwonetsa magawo oyambira ndikugwiritsa ntchito kwa LED
● Gulu ndi mphamvu yotulutsa: 0.4W, 1.28W, 1.4W, 3W, 4.2W, 5W, 8W, 10.5W, 12W, 15W, 18W, 20W, 23W, 25W, 30W, 45W, 20W, 10W, 1 , 200W, 300W, etc.
● Gulu ndi mphamvu yamagetsi: DC4V, 6V, 9V, 12V, 18V, 24V, 36V, 42V, 48V, 54V, 63V, 81V, 105V, 135V, ndi zina zotero.
● Gulu potengera mawonekedwe: mitundu iwiri: PCBA yopanda bolodi komanso yokhala ndi chipolopolo.
● Kugawikana ndi dongosolo la chitetezo: mitundu iwiri: yokhayokha komanso yosakhala yokha.
● Kugawikana ndi mphamvu yamagetsi: ndi kukonza mphamvu yamagetsi komanso opanda mphamvu.
● Kugawikana ndi machitidwe osalowa madzi: osalowa madzi komanso osalowa madzi.
● Kugawikana mwa njira yosangalatsa: kudzikonda nokha ndi chisangalalo chakunja.
● Kugawikana ndi dera la topology: RCC, Flyback, Forward, Half-Bridge, Full-Bridge, Push-PLL, LLC, etc.
● Gulu mwa njira yosinthira: AC-DC ndi DC-DC.
● Kugawikana ndi ntchito yotulutsa: magetsi osasunthika, magetsi osasunthika komanso magetsi okhazikika komanso osasintha.
Kugwiritsa ntchito magetsi oyendetsa madalaivala a LED:
Amagwiritsidwa ntchito powunikira, magetsi a kabati, magetsi ausiku, magetsi oteteza maso, nyali zapadenga za LED, makapu a nyale, magetsi okwiriridwa, magetsi apansi pamadzi, zochapira pakhoma, zowunikira, magetsi a mumsewu, mabokosi owunikira zikwangwani, zounikira zingwe, zowunikira, nyali zooneka mwapadera, nyenyezi. magetsi, magetsi a guardrail, kuwala kwa utawaleza, nyali zotchinga khoma, magetsi osinthasintha, magetsi oyendetsa, magetsi a lamba, magetsi a piranha, magetsi a fulorosenti, magetsi apamwamba, magetsi a mlatho, magetsi a migodi, tochi, magetsi adzidzidzi, nyali za tebulo, kuyatsa, magetsi oyendetsa galimoto, nyali zopulumutsa mphamvu, zounikira m'galimoto, nyali za kapinga, nyali zamitundu, nyali za kristalo, nyali za grille, nyali zamakina, ndi zina.
Ndife akatswiri opanga magetsi a LED ku China, talandiridwa kuti muwonekalozera wathu wazogulitsa.
Chonde funsani zitsanzo zambiri, thandizani zinthu makonda.
Nthawi yotumiza: Aug-03-2024