Dab tsi yog qhov Voltage ntawm LED Lub Hwj Chim thiab Nws Cov Txheej Txheem Tsav Tsheb?

Thawj lub zog hluav taws xob ntawm LED fais fab mov muaj peb hom tseem ceeb: cov roj teeb uas tsis muaj hluav taws xob, lub hnub ci hlwb, thiab kev sib txuas lus kev lag luam hluav taws xob. Tsis muaj teeb meem dab tsi thawj lub hwj chim tau txais, qhov yuav tsum tau ua ua ntej rau kev hloov hluav taws xob kom txaus siab rau LED. Hom hluav taws xob hloov hluav taws xob no feem ntau txhais tau tias LED tsav Circuit Court. Nyob rau hauv LED hnub ci fais fab mov system, roj teeb lossis ultra-supercapacitor yog xav tau los khaws lub hnub ci zog. Thaum lub teeb pom kev tsaus ntuj, cov roj teeb lossis cov supercapacitors raug tso tawm los ntawm cov txheej txheem ntawm kev tswj lub voj voog kom lub zog ntawm LED tsav Circuit Court. Lub union ntawm lub hnub ci zog thiab cua zog thiab LED yog ib lub xyoo tseem ceeb ntawm LED. Nws yuav coj teeb pom kev rau cov neeg txom nyem thiab thaj chaw deb ntawm lub ntiaj teb thib peb, thiab cia lub teeb pom kev zoo ntsuab ci ntsa iab txhua lub kaum ntawm lub ntiaj teb. LED fais fab mov thiab lawv cov kev tsav tsheb hauv Circuit Court tsim 1. LFD tsav Circuit Court nrog tsawg voltage DC fais fab mov 1. Thaum lub input voltage siab tshaj qhov LED voltage, thaum lub input voltage siab tshaj qhov voltage ntawm LED los yog LED hlua Antihypertensive regulator. (1) Linear regulator linear regulator yog DC-DC antihypertensive converter. Feem ntau ntawm cov linear regulators txais los ntawm LED tsav Circuit Court yog tsawg-voltage differential regulators (LDO). Lub zog yog tias tsis tas yuav tsum muaj cov khoom siv inductance, tus naj npawb ntawm cov khoom yuav tsum tau muaj me me, EMI infertility tshwm sim, thiab nws tus kheej qhov hluav taws xob poob qis dua lub zog kom qis dua qhov quab yuam. Txawm li cas los xij, piv nrog cov hloov-hom regulator, lub zog poob ntawm LDO tseem qub, thiab kev ua haujlwm qis dua. Thaum LDO tsav 350mA lossis siab dua lub zog LED hlua, nws yuav tsum tau ntxiv nrog lub tshuab hluav taws xob. (2) Qhov hloov pauv -voltage voltage (buck) stabilizer yog ua raws li qhov hloov pauv -type antihypertensive regulator ntawm ib leeg -chip -specific IC. Ntau cov tshuaj tiv thaiv kev tiv thaiv kev hloov pauv zaus ntau dua 1MHz, uas ua rau cov khoom siv sab nraud me me. Lub entangle yog me me, nrog kev ua haujlwm ntawm ntau tshaj 90%. Txawm li cas los xij, hom hloov pauv no yuav yug los hloov lub suab nrov, thiab muaj teeb meem EMI. Daim duab 1 qhia txog 3WLED boost tsav Circuit Court raws li Zetex ZXSC300. RCS ntawm no yog cov hluav taws xob kis tau tus mob rhiab heev. Nyob rau hauv lub input voltage ntawm 6V, tam sim no LED tam sim no mus txog 1.11A.ZXSC300 txais 5 pins SOT23 ntim. Cov khoom siv hluav taws xob LED thiab nws cov qauv tsav tsheb yooj yim tam sim no muaj ntau yam tshuaj tiv thaiv kab mob ib leeg-chip ICs hloov pauv MOSFET (Q1) thiab antihypertensive diode (D1). 2. Thaum lub input voltage qis dua LED voltage, thaum lub input voltage qis dua qhov zoo voltage voltage ntawm LED los yog LED hlua, LED yuav tsum tau nce lub voltage tsav Circuit Court. Muaj ob hom kev txhawb zog converter hauv ob hom hauv qab no. (1) Direct siab converter Nyob rau hauv lub xov tooj ntawm tes ua txhaum teeb pom kev zoo, lub inductive voltage voltage LED tsav tsheb Circuit Court yog feem ntau siv. Qhov hloov pauv-hom inductance boost converter yog siv los ua ib txoj hlua LED ntawm ib lossis ntau dua LED muaj pes tsawg leeg, thiab tam sim no ntawm txhua LED sib npaug. Yog tias muaj txoj kev LED hauv txoj hlua LED, lwm cov LEDs yuav tawm mus. Daim duab 2 qhia qhov inductive voltage LED tsav Circuit Court. Cov hlua LED yog tsim los ntawm NSPW500BS dawb lub teeb Ledled teeb ntawm NSPW500BS hom 8 Nyiv Asia Chemical Corporation. Nyob rau hauv 4V input voltage, tam sim no ntawm txhua LED yog hais txog 25mA ib LED. Cov khoom siv hluav taws xob LED thiab nws cov qauv tsav tsheb yooj yim feem ntau txhawb cov regulator IC, thiab cov raj hloov pauv tau koom ua ke hauv cov nti. (2) Qhov hloov pauv capacitor (them twj tso kua mis) boost converter hloov lub capacitor voltage voltage converter, uas yog, tus nqi twj tso kua mis. Qhov tshwj xeeb IC ntawm lub twj tso kua mis muaj qhov hloov pauv, uas txuas nrog 1 lossis ob 1 μF lub charger capacitor. Muaj nrhiav 1 ×, 1.5 ×2 ×Nyob rau hauv xyoo tas los no, nws tau qhia 1.33 ×(4/3 zaug) thiab 4 ×qauv. Thaum cov zis hluav taws xob nyob ze rau qhov input voltage, lub twj tso kua mis tsis tas yuav nce qhov voltage, uas yog, ntawm 1 ×Tus txiv. Thaum lub siab xav tau, hloov mus rau 1.5 ×Los yog lwm yam. Tus nqi twj tso kua mis Circuit Court tuaj yeem tsav lub LED array, lossis tsuas yog ib qho LED.