Smooth tig rau LEDs: cov peev txheej thiab khoom siv

Smooth tig rau LEDs: cov peev txheej thiab khoom siv
Smooth tig rau LEDs: cov peev txheej thiab khoom siv
Anonim

Cov peev txheej ntawm LEDs hnub no yog qhov loj thiab nthuav dav tas li. Tab sis tsis ntev dhau los, cov cuab yeej no tsuas yog pom nyob rau hauv cov khoom siv hluav taws xob. Nws tsis yog tsim los rau lub nra hnyav. Ntau thiab ntau cov cuab yeej muaj zog tau raug tsim tawm uas tuaj yeem ua haujlwm hauv thaj chaw teeb pom kev zoo. Cov tsom teeb thiab teeb raws li lub zog siab LEDs tau tshwm sim. Lawv tau siv rau hauv kev lag luam tsheb, koom nrog hauv kev teeb pom kev zoo thiab tswj kev khiav tsheb nrog kev pab los ntawm cov teeb pom kev muaj zog. Cov khoom siv hauv tsev tau tshwm sim uas yog qhov zoo sib xws ntawm cov khoom siv teeb pom kev zoo uas twb muaj lawm. LED teeb tau pib tshwm nyob rau hauv peb cov tsev, stairwells thiab chaw ua haujlwm.

soft tig rau LEDs
soft tig rau LEDs

Cov khoom txawv txawv ntawm LEDs tau ntev tau nyiam cov neeg tsim qauv. Hauv kev lag luam tsheb, tsheb nres tsheb thiab nres teeb raws li cov khoom siv no tau siv. Ib qho ntawm cov lus qhia hauv kev tsim lub tsheb yog kev hloov cov teeb uas tsis siv hauv lub tsev nrog LEDs. Lawv kuj tau siv dav rauntsuas vaj huam sib luag qhia thiab teeb pom kev sab hauv. Kev ua haujlwm zoo ntawm LEDs yog ib qho kev cog lus hauv kev kho tsheb. Piv txwv li, lub teeb nyob rau hauv lub alarm tuaj yeem yooj yim teeb los yog tawm mus, feem, thaum qhib lossis kaw qhov rooj. Los yog lub teeb rov qab ntawm cov cuab yeej tswj tau tuaj yeem ua tau zoo qhib / tawm thaum lub cuab yeej qhib, piv txwv li, sab teeb pom kev zoo.

tig rau LEDs
tig rau LEDs

Nws tsis yog qhov nyuaj rau kev teeb tsa lub zog tig ntawm LEDs, rau qhov no koj yuav tsum tau sib sau ua ke me me. Yog hais tias lub hwj chim noj ntawm lub load me me, ces koj tuaj yeem siv ib qho yooj yim polar capacitor los ntawm soldering nws nyob rau hauv parallel nrog lub teeb pom kev zoo. Tsis txhob hnov qab txog lub polarity (qhov zoo davhlau ya nyob twg ntawm lub capacitor yuav tsum tau txuas nrog lub anode hlau ntawm LED). Tsis zoo, feem, nrog lub cathode. Capacitor tuaj yeem tawg yog tias txuas tsis raug! Tsis tas li ntawd xyuam xim rau qhov siab tshaj plaws voltage uas xws li ib tug Circuit Court ua hauj lwm. Nws yuav tsum tsis txhob tshaj qhov tso cai ua haujlwm voltage ntawm lub capacitor.

pib mos
pib mos

Txhim kho lub voj voog kom raug, koj tuaj yeem pom tam sim ntawd qhov kev sib hloov ntawm cov LEDs. Nws tsis pom zoo kom nce lub peev xwm ntawm lub capacitor los ntawm ntau dua 2200 μF, vim tias qhov siab tshaj qhov nqi no yuav ua rau cov khoom siv hloov pauv sai. Qhov tseeb yog tias thaum qhov hluav taws xob siv rau hauv Circuit Court, lub capacitance pib them. Nyob rau thawj lub sij hawm ntawm lub sij hawm, ib tug dlej pib tam sim no tshwm sim, uas yuav ua rau puas lub relay hu. Qhov saum toj no capacitor capacitance tso cai rau ib tug dutig rau LEDs nrog lub sij hawm ncua mus txog 3-5 vib nas this. Qhov no tshwm sim exponentially, txhais tau hais tias thaum xub thawj koj tau txais kwv yees li 20-40 feem pua ntawm cov teeb pom kev zoo hauv tsev. Rau ob peb vib nas this tom qab ntawd, cov LEDs tig rau smoothly rau hom nominal ntawm lawv txoj haujlwm.

Ua haujlwm nrog cov khoom siv teeb pom kev zoo dua, ib lub capacitor tsis txaus. Kev hloov pauv ntawm cov khoom siv zoo li no yog tsim los siv cov khoom siv hluav taws xob uas siv tam sim no ntawm LEDs yog tswj los ntawm theem tso zis, sib sau ua ke, piv txwv li, ntawm transistors. Lub sij hawm ncua nyob rau hauv rooj plaub no yog siv los ntawm ntau yam hluav taws xob circuits.

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