Niaj hnub no LEDs muaj ntau cov kev siv: rov qab kho, qhia tau, hnub so thiab tsev teeb pom kev zoo. Txhawm rau xaiv cov LEDs, qhov nyuaj ntawm cov yam ntxwv thiab cov yam ntxwv yuav tsum raug coj los txiav txim.
Cov yam ntxwv tseem ceeb thiab xaiv cov qauv rau LEDs
Cov yam ntxwv tseem ceeb ntawm LED yog voltage, lub neej ntev, lub hnub ci ci, lub teeb xim, xim kub, qhov ua tau zoo.
Thaum xaiv cov LEDs, koj yuav tsum xub txiav txim siab qhov ntsuas qhov yuav tsum tau ua hluav taws xob thiab qhov ntsuas xim, uas nyob ntawm thaj tsam npaj ntawm lawv txoj kev siv. Niaj hnub no, cov kev faib tawm hauv qab no ntawm LEDs tau tsim nyob ntawm lub zog:
- qis hluav taws xob LEDs (kev khiav hauj lwm tam sim no 20mA ib LED);
- siab LED tam sim no (kev khiav hauj lwm tam sim no los ntawm 50mA txog 150mA);
- siab zog LEDs (los ntawm 150mA txog rau> 1000mA).
Cov fais fab ntawm LED txiav txim siab lawv cov kev siv. Thawj pawg yog siv nyob rau hauv kev tso saib cov tshuab, qhov thib ob - rau kev rov qab tsav tsheb, pab pawg thib peb - hauv cov teeb pom kev zoo
Qhov siab zog ntawm cov hluav taws xob ntawm LED, qhov siab dua nws qhov kub, thiab cov laus sai dua tshwm sim thiab ua lub sijhawm ua haujlwm luv luv ntawm cov cuab yeej.
Los ntawm cov yam ntxwv xim, lawv qhov txawv: xiav, ntsuab thiab ultraviolet high-brightness LEDs; liab thiab infrared LEDs; daj, ntsuab, txiv kab ntxwv thiab liab LED. Cov xaim hluav taws xob uas nrov tshaj plaws yog xim ntsuab thiab xim liab, uas tau siv hauv cov tshuab tso saib - cov ntaub ntawv cov lus qhia, lub tshuab hluav taws xob cov tsheb thiab lwm cov ntaub ntawv kom pom. Cov LEDs dawb yog siv rau kev teeb pom kev zoo. Tsis muaj cov khoom siv zoo li no hauv lawv daim ntawv ntshiab, yuav luag txhua lub LED dawb yog peb-LEDs, suav nrog peb lub semiconductor emitters ntawm lub teeb liab, ntsuab thiab xiav.
Thaum xaiv LED, koj yuav tsum them sai sai rau lub neej kwv yees kev pabcuam ntawm lub cuab yeej. Raws li niaj hnub no, tsis muaj ib qho qauv uas txhais tau lub hnub nyoog ntawm LED. Lub neej ncua nyob ntawm ntau npaum li cas tam sim no kis los ntawm LED thaum nws lub neej.
Qhov siab zog ntawm cov hluav taws xob ntawm LED, qhov siab dua nws qhov kub, thiab cov laus sai dua tshwm sim thiab ua lub sijhawm ua haujlwm luv luv ntawm cov cuab yeej.
Nws yog tsim nyog xaiv LED los ntawm cov tuam ntxhab loj ntseeg, xws li cov khoom siv tau ntev dua.
Lub teeb ci ntsa iab tsis tseem ceeb thaum xaiv, vim hais tias lub ci ci ntawm LED tuaj yeem tswj hwm thiab hloov nce lossis nqis. Ua raws li qhov ci ci, LEDs tau muab faib ua peb pawg loj: LEDs ntawm cov qauv ci ntsa iab (kaum tawm ntawm millicandel); siab ci ci LEDs (pua pua ntawm millicandel); ultra-high brightness LEDs (kaum tawm ntawm lub tswm ciab).
Thaum xaiv LED rau lub teeb pom kev zoo, nws tsim nyog txiav txim siab qhov xim xim kub thiab luminous kev ua tau zoo ntawm LED. Sov thiab cov xim txias tau qhov txawv los ntawm cov xim kub. Lub teeb yuav sov zuj zus raws li cov xim kub hloov zuj zus, thiab txias dua li qhov xim kub nce. Cov xim kub ntawm lub hnub yog suav tias yog ib txwm, i.e. 5500 degrees Kelvin, nws tseem raug suav tias yog qhov yooj yim dua rau lub qhov muag. Cov LED dawb tuaj yeem muaj xim xim kub txog li ntawm 2,700 txog 10,000 degrees.
Lub luminous efficiency ntawm niaj hnub LEDs yog ib qho kev txiav txim ntawm qhov siab dua li ntawm cov teeb pom kev zoo ib txwm muaj.
Hauv qhov kev sim, qhov teeb pom kev zoo ntawm LEDs ntawm 10050150 lm / W twb tau txais lawm. Rau kev sib piv, rau lub teeb lub teeb thiab cov roj fluorescent nws yog sib npaug rau 15 thiab 80 lm / W.
Raws li cov lus hais no, lawv yog thib ob rau cov teeb roj fluorescent, tab sis kev tsim hluav taws xob LED ntau lawm tau hloov tas li.
Tus nqi LED ntau npaum li cas
Tus nqi ntawm LEDs nws txawv nyob ntawm lub zog, xim thiab lwm yam tsis. Tus nqi ntawm cov khoom siv nrog lub zog hluav taws xob ntawm 1 W lossis ntau dua pib ntawm $ 0.9, thiab ntau dua 10 W pib ntawm $ 10. Dawb LEDs ib txwm kim dua li cov xim dawb.
Txhawm rau kwv yees cov nqi ntawm cov teeb pom kev zoo ntawm LED, tus nqi teev ntawm 1 lm (chav teeb pom kev zoo) tau siv. Qhov no tso cai rau tus nqi ntawm LEDs piv nrog cov nqi ntawm lwm cov teeb pom kev zoo. Tus nqi nruab nrab ntawm 1lm ntawm LED teeb pom kev zoo hnub no yog kwv yees li 2.5 rubles. Rau kev sib piv, rau lub teeb roj incandescent nws yog 0.01 rubles, CFL - 0.02 rubles / lm. Nyob rau tib lub sijhawm, tus nqi ntawm LED tau txo los ntawm txog 4-5% hauv ib lub xyoo.
