• madaxa_bn_shay

Waa maxay Darawalka Dimmer LED?

Maadaama ay LED-yadu u baahan yihiin koronto toos ah iyo danab hooseeya si ay u shaqeeyaan, darawalka LED-ka waa in la hagaajiyaa si loo habeeyo qadarka korontada ee soo galaya LED-ka.
Dareewalka LED-ku waa qayb koronto oo nidaamisa tamarta iyo hadda korontada si ay LED-yadu ugu shaqeeyaan si badbaado leh oo waxtar leh. Dareewalka LED-ku waxa uu ka beddelaa sahayda beddelka hadda (AC) ee dhexda ilaa hadda toos ah (DC) sababtoo ah badi sahayda korontadu waxa ay ku shaqeeyaan dhexda.
Nalalka LED-ka waxa laga dhigi karaa mid la dhimi karo iyada oo la beddelo darawalka LED-ka, kaas oo mas'uul ka ah nidaaminta qaddarka hadda gelaya LED-ka. Dareewalka LED-ka ee la habeeyey, oo mararka qaarkood loo yaqaan darawal dimmer LED, ayaa wax ka beddela iftiinka LED-ka.
Waa muhiim in la tixgeliyo fududaynta isticmaalka darawalka dimmer dimmer marka mid la iibsanayo. Darawalka LED dimmer oo leh xirmo laba-line-line ah (DIP) oo hore u wareegaya ayaa u sahlaysa isticmaalayaasha inay beddelaan wax soo saarka hadda, taas oo iyaduna wax ka beddeleysa iftiinka LED-ka.
Waafaqsanaanta darawalka dimmer LED-ka ee leh Triode for Beddelka Hadda (TRIAC) taarikada gidaarka iyo sahayda korontadu waa sifo kale oo lagu hubiyo. Tani waxay dammaanad qaadaysaa in aad nidaamin karto korantada xawaaraha sare leh ee ku qulqulaya LED-ka iyo in dimmer-kaagu uu u shaqeyn doono mashruuc kasta oo aad maskaxda ku hayso.

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Laba hab ama habayn ayaa loo adeegsadaa darawalada dimmer LED si ay u xakameeyaan korantada soo gasha LED-ka: habaynta baaxadda iyo qaabaynta ballaca garaaca garaaca.

Hoos u dhigida qadarka hogaaminta hadda mara LED-ka waa yoolka qaabaynta ballaca garaaca wadnaha, ama PWM.
Darawalku mar mar ayuu daaraa oo damiyaa oo dib ayuu u daaraa si uu u xakameeyo cadadka tamarta LED-ka ee hadda jira, xitaa haddii kan hadda soo galaya LED-ku uu yahay mid joogto ah. Natiijadii is-dhaafsigan aadka u kooban, nalku wuu yaraanayaa oo si degdeg ah ayuu u lulmay si uu aragga bini'aadamku u arko.

Hoos u dhigida qadarka korantada ee soo galaya LED-ka waxaa loo yaqaan 'amplitude modulation', ama AM. Iftiin yar oo iftiin leh ayaa ka dhasha isticmaalka tamar yar. Xidid la mid ah, hoos u dhaca natiijooyinka hadda ee heerkulka hoose iyo korodhka waxtarka LED. Flicker sidoo kale waa lagu baabi'iyay istiraatiijiyaddan.
Si kastaba ha ahaatee, maskaxda ku hay in isticmaalka habkan yaraynta ay xambaarsan tahay xoogaa khatar ah oo ah beddelka wax soo saarka midabka LED-ka, gaar ahaan heerar hoose.

Helitaanka darawalada dimmable LED waxay awood kuu siin doontaa inaad ka faa'iidaysato nalalka LED-kaaga. Ka faa'iidayso xorriyadda aad ku beddesho heerarka dhalaalka LED-yada si aad tamarta u badbaadiso oo aad u hesho iftiinka ugu raaxada badan gurigaaga.
Nala soo xidhiidhMa u baahan tahay xoogaa nalal LED ah oo leh dimmer/dimmer dimmer ama qalab kale.


Waqtiga boostada: Oct-14-2024

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