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Waa maxay Voltage-ka Awoodda LED-ka iyo Wareeggeeda Aasaasiga ah?

2023-01-19

Tianhui

Awoodda asalka ah ee sahayda LED-ku waxay leedahay saddex nooc oo muhiim ah: baytariyada korantada hooseeya, unugyada qorraxda, iyo sahayda suuqa isgaarsiinta. Si kasta oo loo aqbalo sahayda asalka ah, shardiga u ah isbeddelka korantada inuu ku qanacsan yahay LED-ka. Noocan ka mid ah wareegga isbeddelka awoodda guud ahaan macnaheedu waa wareegga wadista LED. Nidaamka korontada cadceedda ee LED, baytariyada ama ultra-supercapacitors ayaa loo baahan yahay si loo kaydiyo tamarta qorraxda. Marka la shido habeenkii, baytariyada ama supercapacitors ayaa markaa laga sii daayaa iyada oo loo marayo habka xakamaynta wareegga si loo xoojiyo wareegga wadista LED. Midowga tamarta qoraxda iyo tamarta dabaysha iyo LED waa iftiiminta halka sano ee LED. Waxay iftiimin doontaa saboolnimada iyo gobollada fog ee dunida saddexaad, iyo iftiinka cagaaran ee sharafta leh ha iftiimiyo gees kasta oo adduunka ah. Korontada LED-ka iyo naqshadooda wareegga wadista aasaasiga ah 1. Wareegga darawalka LFD oo leh koronto yar oo DC ah 1. Marka danab-galku uu ka sarreeyo korantada LED-ka, marka danab-galku uu ka sarreeyo tamarta LED-ka ama xadhigga LED-ka ee xakamaynta hypertensive. (1) Nidaamiyaha toosan ee toosan hagaha waa beddele DC-DC antihypertensive. Inta badan xeeriyeyaasha toosan ee ay aqbaleen wareegga wadista LED-ku waa hagayaasha kala duwanaanshaha-voltage hoose (LDO). Awoodaha ayaa ah in aan loo baahnayn qaybaha inductance, tirada qaybaha loo baahan yahay waa yar yihiin, EMI madhalaysnimo ayaa dhacda, hoos u dhaca danabkeeda ayaa ka hooseeya xoogga hoos u dhigista xoogga. Si kastaba ha ahaatee, marka la barbar dhigo nidaamiyaha nooca beddelka, luminta awoodda LDO ayaa weli ah mid duug ah, waxtarkeeduna wuu hooseeyaa. Marka LDO uu wado 350mA ama xargaha korantada ee ka sareeya, waxay u baahan tahay in lagu daro hiitarka. (2) Xasijiye-ku-bedelka danab-ku-oolka (buck) wuxuu ku salaysan yahay habeeyaha-nooc ka-hortagga dhiig-karka ee hal-chip-specific IC. Qaar badan oo ka mid ah soo noqnoqda beddelka xakameynta dhiig-karka ayaa ka badan 1MHz, taasoo ka dhigaysa qaybaha dibadda mid aad u yar. Xagalka waa mid aad u yar, oo leh wax ku ool ah in ka badan 90%. Si kastaba ha noqotee, beddelaha noocaan ah wuxuu dhalin doonaa beddelka buuqa, waxaana jirta dhibaato EMI ah. Jaantuska 1 wuxuu muujinayaa 3WLED kor u qaadista wareegga wadista ku salaysan Zetex ZXSC300. RCS halkan waa iska caabbinta gudbinta korantada. Marka la eego tamarta gelinta ee 6V, LED-ga hadda jira wuxuu gaarayaa 1.11A.ZXSC300 si uu u aqbalo 5 biin SOT23 baakadaha. Korontada LED-ka iyo naqshadeeda wareegga wadista ee aasaasiga ah waxay hadda leeyihiin beddeleyaal badan oo ka-hortagga hypertensive hal-chip ICs si loogu beddelo beddelka MOSFET (Q1) iyo diode-ka-hortagga dhiig-karka (D1). 2. Marka danab-galku uu ka hooseeyo korantada LED-ka, marka danab-galku uu ka hooseeyo korantada guud ee tamarta LED-ka ama xargaha LED-ka, LED-gu wuxuu u baahan yahay inuu kordhiyo wareegga wadista korantada. Waxaa jira laba nooc oo beddele xoojiye ah labada nooc ee soo socda. (1) Beddelaha cadaadiska tooska ah Iftiinka jebinta taleefanka gacanta, korantada korantada ee wareegga darawalka LED ayaa inta badan la isticmaalaa. Beddeliyaha kor u qaadista inductance-type-ka waxaa loo isticmaalaa sidii xadhig LED ah oo ka kooban hal ama in ka badan oo LED ah, iyo hadda LED kasta waa siman yahay. Haddii ay jirto waddo LED ah oo ku taal xargaha LED-ka, LED-yada kale ayaa bixi doona. Jaantuska 2 waxa uu muujinayaa korantada inductive LED wadida wadista. Xadhkaha LED-ku waxa uu ka kooban yahay NSPW500BS nalka cad ee Ledled ee NSPW500BS nooca 8 Japan Asia Chemical Corporation. Marka la eego tamarta gelinta 4V, wakhtiga hadda ee LED kasta wuxuu ku saabsan yahay 25mA halkii LED. Korontada LED-ka iyo naqshadeeda wareegga wadista aasaasiga ah waxay inta badan kor u qaadaysaa maamulaha IC, iyo tuubada wareejinta waxay ku dhex milmay chip-ka. (2) Capacitor-ka beddelka (bamka dallaca) beddelka beddelka beddelka korantada capacitor-ka, taas oo ah, bamka dallaca. IC-ga gaarka ah ee bamka dallacadu wuxuu leeyahay beddel-ku-xidhaale, kaas oo ku xidhan 1 ama laba 1 μF ayaa ku dallacaya. Waxaa jira 1 ×, 1.5 ×2 ×Sanadihii la soo dhaafay, waxay muujisay 1.33 ×(4/3 jeer) iyo 4 ×model. Marka danab wax-soo-saarku uu ku dhow yahay korantada wax-soo-saarka, bamka dallacadu uma baahna inuu kordhiyo tamarta, taas oo ah, at 1 ×Faampka. Marka cadaadiska loo baahdo, u beddel 1.5 ×Ama waxyaabo kale. Wareegga bamka dallacadu wuxuu wadi karaa shaxanka LED-ka, ama hal LED oo keliya.

Waa maxay Voltage-ka Awoodda LED-ka iyo Wareeggeeda Aasaasiga ah? 1

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