Lub invention ntawm LEDs (lub teeb emitting diodes) yog ib tug ntau theem txheej txheem uas muaj kev koom tes los ntawm ntau tus kws tshawb fawb. Nov yog qee lub sijhawm keeb kwm tseem ceeb hauv kev tsim cov LEDs:
Early theory thiab kev sim:
Xyoo 1907:Tus kws tshawb fawb Askiv HJ Round thawj zaug pom tias cov khoom siv semiconductor silicon carbide (SiC) emits lub teeb thaum siv hluav taws xob. Qhov no yog thawj zaug kaw electroluminescence tshwm sim ntawm cov khoom siv semiconductor.
Xyoo 1920:Lavxias teb sab kws tshawb fawb Oleg Losev tau kawm ntxiv txog qhov tshwm sim thiab luam tawm ib daim ntawv ntawm cov qauv ntawm LEDs nyob rau hauv 1927, tab sis nws tsis nyiam thoob plaws lub sijhawm.
Kev tsim kho ntawm cov tswv yim LEDs:
Xyoo 1962:Nick Holonyak Jr., tus kws tshaj lij ua haujlwm ntawm General Electric (GE) thaum lub sijhawm, tau tsim thawj lub teeb pom kev zoo LED (liab LED). Holonyak yog lub npe hu ua "Leej Txiv ntawm LEDs".
Xyoo 1972:M. George Craford, ib tug tub ntxhais kawm ntawm Holonyak, tau tsim thawj lub teeb daj LED thiab txhim kho qhov ci ntawm liab thiab txiv kab ntxwv LEDs zoo heev. Nws tau txhim kho raws li cov khoom siv gallium nitride phosphorus (GaAsP) kom ua kom lub teeb ci ntawm LEDs kaum npaug.
1970s thiab 1980s: Kev siv thev naus laus zis tau ua rau kev tsim cov LEDs ntau xim, suav nrog ntsuab, daj, thiab txiv kab ntxwv.
Blue LED Kev Ua Haujlwm:
Xyoo 1990:Cov kws tshawb fawb ntawm Hitachi thiab Nichia, tshwj xeeb tshaj yog Shuji Nakamura, tau tsim lub teeb ci xiav LEDs. Qhov no yog qhov kev ua txhaum loj uas siv cov khoom siv gallium nitride (GaN). Lub invention ntawm xiav LEDs ua rau tag nrho-xim qhia thiab dawb LEDs tau.
Xyoo 2014:Shuji Nakamura, Isamu Akasaki, thiab Hiroshi Amano tau txais txiaj ntsig Nobel nqi zog hauv Physics rau lawv txoj haujlwm ntawm xiav LEDs.
Kev loj hlob ntawm Dawb LEDs:
Dawb LEDs feem ntau yog tsim los ntawm kev sib txuas xiav LEDs nrog phosphors. Lub teeb xiav los ntawm xiav LED ua rau lub phosphor, uas tom qab ntawd tawm lub teeb daj, thiab ob qho tib si ua rau lub teeb dawb.
Kev nce qib hauv LED thev naus laus zis tau ua rau muaj ntau yam ntawm LED xim tsis yog nyob rau hauv qhov pom ntau yam, tab sis kuj nyob rau hauv ultraviolet thiab infrared ntau yam. Niaj hnub no, LEDs tau siv ntau yam kev siv, suav nrog cov lus qhia, teeb pom kev zoo, teeb pom kev zoo, thiab kev sib txuas lus.
Cov hauv qab no qhia txog kev faib tawm thiab kev siv ntawm LED
● Kev faib tawm los ntawm cov zis hluav taws xob: 0.4W, 1.28W, 1.4W, 3W, 4.2W, 5W, 8W, 10.5W, 12W, 15W, 18W, 20W, 23W, 25W, 30W, 45W, 110W, 60W 200W, 300W, thiab lwm yam.
● Kev faib tawm los ntawm cov zis hluav taws xob: DC4V, 6V, 9V, 12V, 18V, 24V, 36V, 42V, 48V, 54V, 63V, 81V, 105V, 135V, thiab lwm yam.
● Kev faib tawm los ntawm cov qauv zoo li: ob hom: PCBA liab qab board thiab nrog lub plhaub.
● Kev faib tawm los ntawm cov qauv kev nyab xeeb: ob hom: cais thiab tsis cais.
● Kev faib tawm los ntawm cov khoom siv hluav taws xob: nrog kev kho lub zog thiab tsis muaj lub zog ua haujlwm.
● Kev faib tawm los ntawm kev ua haujlwm tsis zoo: tsis muaj dej tsis muaj dej thiab tsis muaj dej.
● Classification los ntawm excitation method: self-excitation thiab sab nraud excitation.
● Kev faib tawm los ntawm Circuit Court topology: RCC, Flyback, Forward, Ib nrab-Bridge, Full-Bridge, Push-PLL, LLC, thiab lwm yam.
● Kev faib tawm los ntawm txoj kev hloov pauv: AC-DC thiab DC-DC.
● Kev faib tawm los ntawm kev ua haujlwm ntawm cov zis: qhov tam sim no tsis tu ncua, qhov hluav taws xob tsis tu ncua thiab ob qho tib si tam sim no thiab qhov hluav taws xob tsis tu ncua.
Daim ntawv thov ntawm LED tsav tsheb fais fab mov:
Siv rau cov teeb pom kev zoo, teeb txee, teeb hmo ntuj, teeb pom kev tiv thaiv, LED qab nthab teeb, teeb khob, faus lub teeb, underwater teeb, phab ntsa ntxhua khaub ncaws, dej nyab teeb, txoj kev teeb, teeb lub thawv, hlua teeb, downlights, tshwj xeeb zoo li lub teeb, lub hnub qub teeb, guardrail teeb, zaj sawv teeb, ntaub thaiv phab ntsa teeb, hloov tau yooj yim teeb, sawb teeb, siv lub teeb, piranha teeb, fluorescent teeb, siab ncej teeb, choj teeb, mining teeb, teeb nyem, teeb pom kev kub ntxhov, teeb rooj, teeb pom kev zoo, teeb pom kev zoo, Lub teeb txuag hluav taws xob, lub tsheb taillights, lawn teeb, xim teeb, siv lead ua teeb, grille teeb, qhov teeb pom kev zoo, thiab lwm yam.
Peb yog cov kws tshaj lij LED fais fab mov hauv Suav teb, txais tos saibpeb cov khoom catalog.
Thov sab laj rau ntau cov qauv, txhawb cov khoom customized.
Post lub sij hawm: Aug-03-2024