Cov yam ntxwv loj tshaj plaws ntawm cov teeb coj coj teeb yog tias nws muaj qhov tsis zoo, qhov ntawd yog, thaum siv hluav taws xob mus tom ntej, lub diode yuav tig thiab diode yuav tawm teeb, thiab thaum koj thov hluav taws xob rov qab, nws yuav txiav tawm, uas yog, nws yuav tsis Pom thiab ci. Lub hauv paus ntsiab lus yog tias thaum xa mus rau qhov tsis ncaj ncees voltage, qhov muaj peev xwm cuam tshuam tsawg dua, thiab cov tsheb thauj khoom feem ntau nyob hauv P thiab N thaj chaw sib txawv. Cov ntsuas hluav taws xob muaj ntau dua li lub qhov mus ncig ntawm lub qhov, thiab ntau cov hluav taws xob yuav tawg mus rau thaj tsam P, uas suav tias yog kev txhaj tshuaj ntawm cov tsheb thauj neeg tsawg hauv thaj chaw P. Lub tshuab hluav taws xob sib txuas nrog lub qhov nyob hauv lub txiaj ntsig, thiab lub zog tau thaum lub zog rov qab tso tawm nyob rau hauv daim ntawv ntawm lub teeb hluav taws xob. Los ntawm kev siv tag nrho ntawm lub hauv paus ntsiab lus no, peb tuaj yeem nrhiav qhov zoo ntawm LED teeb hlaws.
1. Cov khoom xa tuaj, ua ntej pom cov tsos ntawm lub teeb hlaws rau qhov tsis xws luag, xws li kev tawg, kev puas tsuaj, lub cev kub, thiab xyuas seb puas muaj cov pins feem tau txiav rau lub ntsaws. Ib qho kev txawv txav twg yuav tsum raug tswj hwm.
2. Pom qhov txawv ntawm cathode thiab anode ntawm lub teeb teeb. Rau SMD teeb hlaws, cov ntaub qhwv loj yog qhov tsis zoo electrode thiab cov ntaub qhwv me yog qhov zoo electrode. Txog rau plug-in DIP lub teeb hlaws, ceg ntev ntev yog qhov zoo electrode thiab ceg ceg luv yog qhov tsis zoo electrode.
3. Npaj multimeter thiab kho cov iav kom transistor iav los yog diode cim thaum tseem muaj lub suab nrov hauv qhov chaw, vim hais tias qhov hluav taws xob muaj txog 3v nyob rau lub sijhawm no, uas yooj yim rau kev kuaj. Siv multimeter liab mem los hu rau anode tiv tauj lub cev ntawm lub teeb hlaws, thiab siv cov multimeter dub cwj mem los tiv tauj cathode lub cev tiv thaiv. Saib seb lub teeb puas nyob.
4. Yog tias lub teeb tsa rau lub sijhawm sim, nws txhais tau tias lub teeb cig teeb yog yeej ua haujlwm. Yog tias lub teeb tua tuag lawm, hloov pauv cov xim liab thiab dub coj lawv thiab sim dua. Txhawm rau kom tsis txhob cathode thiab anode ntawm qee lub teeb hlaws yog rov qab rau sawv daws, peb hu nws rov qab polarity pob. Qee zaum koj yuav tsum tau sab laj LED qhov muag teeb lub chaw tsim tshuaj paus.
5. Qhov kev txiav txim siab theem pib ntawm cov xim kub ntawm lub teeb hlaws yog tias thaum nws tua, cov xim ntawm lub teeb hlaws tau txais tsaus ntuj thiab tsaus dua hauv kev txiav txim, qhia tias nws qhov xim kub tau txais qis dua thiab me dua. Piv txwv li, tsaus daj muaj xim kub ntawm 2800-3200k, thiab lub teeb xim muaj qhov siab xim kub, siab tshaj 6000k. Lub teeb hlaws teeb pom kev zoo los saib cov xim ntawm lub teeb hlaws. Seb qhov ci ci puas tsim nyog. Xaiv cov hlaws dai teeb nrog cov xim kub kom haum.
Nco tseg: Feem ntau, LED teeb hlaws muaj voltage ntau, thiab rau pem hauv ntej voltage poob yog 2.7-3.6V. Thov tsis txhob ntxiv qhov voltage siab dua qhov nqi no rau ob qho kawg ntawm lub teeb hlaws. Lub teeb hluav taws xob tsawg heev ntawm cov hlaws dai yuav tsis teeb, qhov ntsuas hluav taws xob ntau dhau yuav hlawv cov kab teeb coj teeb. Yog tias ua tau, siv qhov ntsuas qhov ntsuas tshwj xeeb-sib xyaw rau qhov ntsuas tus kheej yog qhov tseeb tshaj plaws.
Puas yog cov teeb cig teeb? Thaum peb siv LED, peb yuav tsum xub saib ntawm hom teeb hlaws thiab pom cov teeb meem yooj yim. Lub zog tsav tam sim no ntawm 3528 teeb roj teeb yuav tsum tsis pub tshaj qhov tam sim no qhov yuav tsum tau ua los ntawm qhov kev pom tseeb, nyiam dua tsis tshaj 20mA. Qhov kev pom zoo ntawm kev tsav tsheb tam sim no ntawm 2835 kab teeb roj yog 45-50mA. Nruab nrab; 1w lub teeb hlaws, tam sim no ntawm 150ma. Txhua LED yuav muaj qhov sib txawv VF tus nqi. Yog li ntawd, nyob rau hauv daim ntawv thov rau Circuit Court tiag tiag, nws yog qhov zoo tshaj plaws los tsim lub teeb nrog qhov zoo sib xws ntawm VF cov nqi hauv series ntawm Circuit Court kom txhawb cov sib piv resistors nrog sib txawv qhov tseem ceeb kom ua tiav lub hom phiaj ntawm tas mus li tam sim no; them sai sai rau cov ncej ncej. Tsis txhob txuas nws tsis ncaj ncees lawm. Feem ntau, qhov ntev ntev ntawm tus lej teeb yog tus ncej zoo, thiab luv luv yog tus ncej tsis zoo. Yog tias ob lub teeb pins muaj qhov ntev tib yam, ua tib zoo txheeb xyuas lub cim.
Plug-in led teeb hlaws kho, ncaj qha tshem nws nrog hlau soldering, them sai sai rau lub polarity ntawm lub ncoo, thiab hloov nws ncaj qha, vim hais tias qhov zoo ntawm cov teeb tuav coj teeb tus nqi pheej yig heev. Rau smd ncoo coj lub teeb kab teeb (3528, 2835, 3014), hom ntim no kuj muaj tsawg, thiab feem ntau hloov los ntawm kev tshuab thiab cua sov. Rau lub zog hluav taws xob 1w-3wled lub teeb hlaws, vim hais tias cov pins muaj lub sijhawm ntev, koj kuj tseem tuaj yeem siv cov kav hlau txhawm los hlawv cov taw hauv kev sib pauv. Pom zoo coj teeb lub teeb fluorescent
