1. Kev ntseeg siab: Nws yog tshwj xeeb tshaj yog zoo li lub zog tsav tsheb ntawm LED txoj kev teeb, ntsia rau qhov chaw siab, nws tsis yooj yim rau kev tswj, thiab tus nqi txij nkawm tseem siab;
2. Kev ua haujlwm siab: LED yog lub zog txuag hluav taws xob, thiab kev ua haujlwm ntawm lub zog tsav hluav taws xob yuav tsum siab. Nws yog ib qho tseem ceeb heev rau lub tshav kub dissipation ntawm kev sib txuas ntawm lub hwj chim sib txuas hauv lub teeb ci. Qhov ua tau zoo ntawm lub zog tsis txaus, yog li nws lub zog siv hluav taws xob kuj tseem me me, cov kub tsim hauv sab hauv lub teeb yog me me, thiab qhov kub nce ntawm lub teeb kuj tseem me me, uas yuav pab ncua lub teeb hluav taws xob ntawm LED;
3. Lub zog muaj peev xwm: Lub zog hluav taws xob yog qhov yuav tsum muaj ntawm daim phiaj hluav taws xob ntawm lub luag haujlwm. Feem ntau, tsis muaj cov cim qhia yooj yim rau cov khoom siv hluav taws xob qis dua 70W. Txawm hais tias qhov kev siv hluav taws xob ntawm ib tus neeg siv nrog lub zog hluav taws xob tsawg dua, nws tsis muaj kev cuam tshuam me me ntawm daim phiaj hluav taws xob, tab sis qhov ntau ntawm cov teeb pom kev zoo thaum hmo ntuj thiab cov khoom siv sib txuam ntau dhau los yuav ua rau muaj kuab paug rau lub zog daim phiaj. Rau 30W ~ 40W LED tsav lub zog hluav taws xob cov khoom siv, muaj qee qhov ntsuas kev xav tau rau lub zog hluav taws xob yav tom ntej;
4. Tsav hom: Lub sijhawm tam sim no, feem ntau muaj ob hom kev tsav: ①One qhov hluav taws xob qhov khoom siv ntau qhov sib txawv ntawm cov khoom siv tam sim no, thiab txhua qhov hluav taws xob tam sim no muab lub zog rau txhua LED tus kheej. Ua li no, kev sib xyaw ua ke yog hloov tau, ib qho kev ua haujlwm LED yuav tsis cuam tshuam rau kev ua haujlwm ntawm lwm LED, tab sis tus nqi yuav siab me ntsis; Txhais cov hluav taws xob tsis tu ncua tam sim no, LED series lossis cov haujlwm khiav ua ke. Nws cov txiaj ntsig yog tias tus nqi qis dua, tab sis qhov hloov tau tsis zoo, thiab nws yuav tsum daws qhov teeb meem ntawm qee qhov teeb meem LED tsis muaj kev cuam tshuam kev ua haujlwm ntawm lwm LED;
5. Poob kev tiv thaiv: lub peev xwm ntawm LEDs los tiv thaiv surges yog qhov tsis zoo, tshwj xeeb tshaj yog lub peev xwm los tiv thaiv qhov hluav taws xob rov qab. Nws tseem yog ib qho tseem ceeb heev kom ntxiv dag zog tiv thaiv hauv thaj chaw no. Qee qhov LEDs tau ntsia sab nraum zoov, xws li LED teeb txoj kev teeb. Vim tias pib ntawm daim phiaj load thiab induction ntawm xob laim ntaus, ntau surges yuav tau invaded los ntawm kab sib chaws, thiab qee qhov surges yuav ua kev puas tsuaj rau LED. Yog li ntawd, LED tsav lub zog hluav taws xob yuav tsum muaj lub peev xwm los txwv txoj kev nkag siab ntawm cov surges thiab tiv thaiv LED ntawm kev puas tsuaj.
6. Kev tiv thaiv kev ua haujlwm: Ntxiv rau cov kev tiv thaiv ib txwm ntawm kev ua haujlwm ntawm lub zog, nws zoo dua los ntxiv cov lus tsis zoo ntawm LED kub rau cov tso zis hluav taws xob tsis tu ncua kom tiv thaiv LED qhov kub ntawm qhov kub dhau;
7. Hais txog kev tiv thaiv: Rau cov teeb tsa tawm sab nraum zoov lossis hauv cov chaw ib puag ncig, lub zog hluav taws xob qauv qauv yuav tsum muaj cov tseev kom muaj dej thaiv, noo-pov thawj thiab qhov kub-tshaj tawm tsis kam;
8. Kev nyab xeeb kev nyab xeeb: LED tsav lub zog hluav taws xob cov khoom yuav tsum ua raws li cov kev cai nyab xeeb thiab hluav taws xob sib txawv;
9. Lwm tus: Piv txwv li, lub zog tsav tsheb LED yuav tsum sib phim nrog lub neej LED.
1. Raws li hom kev tsav tsheb, tau muab faib ua hom tsis hloov tam sim no thiab hom ntsuas hluav taws xob
1) Yam tsis tu ncua tam sim no: Cov hluav taws xob tsis tu ncua tam sim no ntawm cov hluav taws xob nyob ntawm lub zog tam sim no, thiab cov zis hluav taws xob hloov nrog qhov hloov ntawm cov load tsis kam. Qhov tsis tu ncua lub zog siv hluav taws xob tsav tsheb LED yog qhov zoo tshaj plaws daws thiab nws tsis ntshai ntawm kev thauj khoom luv. Lub LED teeb ci ntsa iab kom zoo dua. Qhov tsis zoo: tus nqi siab, qhib tag nrho cov thauj khoom yog txwv tsis pub, tus naj npawb ntawm LED yuav tsum tsis txhob muaj ntau dhau, vim tias lub zog fais fab muaj qhov siab tshaj qhov tam sim no thiab qhov voltage.
2) Lub zog hluav taws xob tsis tu ncua: Cov hluav taws xob tsis tu ncua hluav taws xob hom tsav Circuit Court yog yam ntxwv ntawm qhov tso zis hluav taws xob tas li, thiab cov zis tam sim no hloov nrog qhov loj me ntawm cov load tsis zoo, thiab qhov hluav taws xob yuav tsis siab heev. Qhov tsis zoo: Nws yog txwv tsis pub luv-Circuit Court cov load kom tiav, thiab kev hloov pauv ntawm lub tshuab hluav taws xob yuav cuam tshuam rau lub teeb ci LED.
2. Raws li tus qauv hluav taws xob, nws muab faib ua capacitor theem, qis hloov qis, qis qis qis qis, RCC nqis qis, thiab PWM tswj hom.
1) Capacitor kauj ruam-theem: Cov hluav taws xob LED siv lub peev txheej ntawm lub zog hloov pauv tau yooj yim cuam tshuam los ntawm qhov hloov ntawm daim phiaj hluav taws xob, qhov hluav taws xob tam sim no loj dhau, thiab lub zog siv hluav taws xob tsawg, tab sis tus qauv yooj yim
2) Transformer kauj ruam-down: hom no muaj kev hloov pauv tsawg dua, kev ntseeg siab tsawg, thiab hnyav hloov pauv
3) Resistor step-down: cov qauv no zoo ib yam li tus tsuj hluav taws xob theem qis, tshwj tsis yog tias tus tiv taus hluav taws xob yuav tsum siv ntau lub zog, yog li lub zog ua haujlwm kuj tseem qis;
4) RCC kauj ruam-nqis hom: cov qauv no tau thov dua me ntsis, tsis yog vim tias nws qhov kev tswj dav dav dav, tab sis kuj nws txoj kev siv hluav taws xob siv tau ntau dua 70%, tab sis nws cov load voltage ripple loj dua;
5) PWM tswj hom: Nws yog qhov yuav tsum tau hais txog PWM tswj txoj kev, vim tias LED fais fab mov tsim los ntawm PWM tswj txoj kev yog qhov zoo dua rau tam sim no. Cov zis hluav taws xob lossis cov hluav taws xob ntawm no LED tsav fais fab mov yog qhov ruaj khov heev, thiab lub hwj huam hluav taws xob tau hloov. Qhov ua tau hauj lwm kuj tuaj yeem ncav cuag 80%, lossis ntau dua 90%. Nws tsim nyog sau cia tias qhov kev txuas hluav taws xob no kuj tseem tuaj yeem nruab nrog ntau tiv thaiv kev tiv thaiv.
3. Raws li cov tswv yim thiab cov khoom tawm los cais tawm, nws tuaj yeem faib ua hom cais thiab tsis cais
1) Hom rho tawm: Kev rho tawm yog rau kev nyab xeeb, kev tawm tswv yim thiab cov khoom sib cais yog cais los ntawm hloov pauv. Cov hom topology muaj xws li rau pem hauv ntej, flyback, ib nrab-choj, tag nrho tus choj, thawb-rub, thiab lwm yam. Ntawm lawv, flyback muaj dav dav voltage ntau thiab feem ntau ua ke nrog PFC, thiab nws daim ntawv thov yog qhov dav siv rau flyback cais tsav.
2) Tsis-cais tawm: cov tsav tsheb sib cais feem ntau yog lub roj teeb, lub zog ntxiv, thiab cov khoom siv hluav taws xob ruaj khov, thiab feem ntau yog siv rau cov khoom siv hluav taws xob nqa, cov teeb roj, tsheb thiab lwm yam khoom siv hluav taws xob.
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