Saddex cilladood oo caadi ah oo ku yimaada nalalka calaamadda LED iyo xalalka

Saaxiibo qaar ayaa isweydiiya sababaha caadiga ah iyo hababka daaweynta ee nalalka calaamadda LED-ka ay u iftiimayaan, dadka qaarna waxay rabaan inay weydiiyaan sababta nalalka calaamadda LED-ku aysan u shidmin. Maxaa socda? Xaqiiqdii, waxaa jira saddex cilladood oo caadi ah iyo xalal lagu xalliyo nalalka calaamadda.

Saddex cilladood oo caadi ah oo ku yimaada nalalka calaamadda LED iyo xalalka:

Cilad caadi ah waa cilladda hagaajiyaha. Tag light City oo mid ka iibso oo beddel. Led-ka oo dhan si dhif ah ayuu u burburaa.

Laba. Sababaha iftiimaya iftiinka LED-ka:

1. Kubbadaha laambadda iyo awoodda wadista LED-ka isma waafaqsana, kubbadaha laambadda ee caadiga ah ee 1W ee caadiga ah waxay leeyihiin :280-300 ma hadda iyo :3.0-3.4V danab, haddii jajabka laambadda uusan lahayn awood ku filan, waxay sababi doontaa ifafaalaha isku-xidhka isha iftiinka, haddii hadda uu aad u weyn yahay, kubbadaha laambadda ma awoodi doonaan inay u adkeystaan ​​​​badhanka. Xaaladaha daran, fiilooyinka dahabka ama naxaasta ah ee ku jira kubbadaha ayaa gubi kara, taasoo keeni karta in kubbaduhu ay shaqayn waayaan.

2. Korontada darawalka ayaa laga yaabaa inay dhaawacdo, ilaa intaad ku beddesho koronto kale oo darawalka wanaagsan, ma libiqsan doonto.

3. Haddii darawalku leeyahay shaqada ilaalinta heerkulka xad dhaafka ah, waxqabadka kala-baxa kulaylka ee laambadda calaamadda LED-ka ma buuxin karo shuruudaha, ilaalinta heerkulka xad dhaafka ah ee darawalku wuu libiqsan doonaa marka uu bilaabo inuu shaqeeyo. Tusaale ahaan, hoyga laambadda saadaasha 20 w ee loo isticmaalo in lagu soo ururiyo laambada 30W ma qabto shaqo qaboojin oo wanaagsan.

4. Haddii laambadaha dibadda ay sidoo kale leeyihiin ifafaale stroboscopic ah, waxay la macno tahay in laambadaha ay daadadku galeen. Natiijo ahaan, haddii ay libiqdo, ma shidna. Iftiinka iyo darawalku way jabeen. Haddii darawalku si fiican u qabto biyo-celin, kuulka laambadda waa jabayaa oo isha iftiinka waa la beddeli karaa.

Saddex. Habka iftiiminta iftiinka calaamadda LED-ka:

1. Codsiyada nalalka LED-ka ee awoodda yar ee aan khadka lahayn, topology-ga awoodda caadiga ah waa topology-ga flyback-ka ee go'doonsan. Green Dot, oo ah darawal LED ah oo 8W ah oo aan khadka lahayn, ayaa buuxiya heerarka nalalka Star-state-ka adag. Xaaladda naqshadeynta, sababtoo ah beddelka awoodda hirarka laba jibbaaran ee sinusoidal ee nidaamiyaha flyback-ka ma bixiyo tamar joogto ah oo loogu talagalay eexda koowaad, wareegga is-ku-shaqaynta firfircoon ayaa laga yaabaa inuu hawlgeliyo oo uu sababo flick iftiin. Si looga fogaado dhibaatadan, waxaa lagama maarmaan ah in la sameeyo dheecaanka aasaasiga ah ee aan khadka lahayn ee wareegga nus kasta. Sidaa darteed, waxaa lagama maarmaan ah in si habboon loo doorto qiimaha awoodda iyo iska caabbinta ee nalalka calaamadda LED-ka ee sameeya wareegga.

2. Caadiyan isha aadanuhu waxay arki kartaa iftiinka iftiinka iyadoo la adeegsanayo 70 Hz, laakiin intaas ka sarreeya ma arki karto. Sidaa darteed, codsiyada nalalka LED-ka, haddii calaamadda garaaca wadnaha ay leedahay qayb soo noqnoqosho hoose leh oo leh soo noqnoqosho ka hooseysa 70 Hz, isha aadanuhu waxay dareemi doontaa libdh. Dabcan, waxaa jira arrimo badan oo sababi kara in nalalka LED-ku ay libiqsadaan codsi gaar ah.

3. Shaandheeyayaasha Emi-ga ayaa looga baahan yahay xitaa codsiyada darawalka LED-ka kuwaas oo bixiya sixitaan wanaagsan oo ku saabsan awoodda iyo taageerada yareynta badhanka SCR ee saddex-terminal-ka ah. Hadda ku-meel-gaarka ah ee uu kiciyo tallaabada badhanka SCR ee laba-geesoodka ah ayaa kiciya falcelinta dabiiciga ah ee inductor-ka iyo capacitors-ka ee shaandhada emi.

Haddii astaamaha falgalka uu keeno in qulqulka la gelinayo uu ka hooseeyo qulqulka la hayo ee curiyaha SCR ee saddex-geesoodka ah, curiyaha SCR ee saddex-geesoodka ah ayaa la damin doonaa. Dib u dhac gaaban ka dib, curiyaha SCR ee saddex-geesoodka ah ayaa badanaa dib u shidan doona si uu u kiciyo isla falgalkaas. Taxanahan dhacdooyinka ah waxaa laga yaabaa in lagu celiyo dhowr jeer gudahood wareegga kala bar ee qaabka hirarka awoodda INPUT ee semaphore-ka LED, taasoo keenta in la arko LED oo libdhaya.