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<\/p>\nFir ze garant\u00e9ieren, datt Liichtklass-w\u00e4iss LED-Liicht net n\u00ebmmen eng gud\u0434 Uwendung huet, mee och eng m\u00e9i h\u00e9ich Virw\u00ebrkung, musse dir \u00e9ischt gew\u00ebss Konditioune erf\u00ebllen, an dan d'\u00cbmfassung vum Drive-Kretz op d'ARBEITSPARAMETRE vum LDE pass\u00e9ieren, sou datt se erf\u00ebllt sinn.<\/p>\n
Erschtens, d'Uwendungserfordernisser vum LED-Beleuchtung<\/p>\n
1, den Drive-Kretz g\u00ebtt vun enger speziell fir LED entw\u00e9ckelter Spezialstromversuergung versuergt, mat enger einfacher Kretzkonfiguratioun, engem m\u00e9i klenge Plazbedarf an enger h\u00e9ijer \u00cbmsetzungs\u00ebffizienz.<\/p>\n
2, d'\u00cbmfassung vum Drive-Kretz, d'Ausgangselektreesch Parameters (Strom a Spannung), mussen op d'Technikparameters vum LED ofgest\u00ebmmt sinn, fir d'Fuerderunge vum LED ze erf\u00ebllen, an eng konstant Stroostoerung mat h\u00e9ijer Pr\u00e4zisioun an engemgeechnete Spannungsbeschr\u00e4nkungsfunktioun ze hunn. Multipel Ausgang, den Ausgang vun all Kanal muss individuell gestuert ginn.<\/p>\n
3, mat enger besse Linearit\u00e9it Dimming-Funktioun, fir d'Fuerderunge vun verschiddene Uwendungen fir d'Uwendung vun der LED-Hellkeitsanpassung ze erf\u00ebllen.<\/p>\n
An engem onnormalen Zoustand (LED Opnung, Kuerzsluss, Drive-Kretzfeil), huet de Kretz selwer, den LED an d'Benotzer d\u00e9i passend Schutz-Elementer.<\/p>\n
5, when the driver circuit, the other circuit normal work interference less meet the electromagnetic compatibility requirements.<\/p>\n
Second, the linear drive applications<\/p>\n
The application of the linear drive is one of the most simple and most direct drive applications. Lighting-class white LED applications, although there is a low efficiency, poor regulatory issues, but because of its simple circuit, compact, to meet the general requirements, and therefore more in certain occasions.<\/p>\n
A regulated power supply Vdd + ballast resistor R Figure 1 as a regulator power + ballast resistor drive way, the circuit has the advantage of simple structure, low cost. A resistor in series with the LED, the additional loss is larger, and the linear regulator power supply Vdd own power consumption is larger, so the two superimposed together to obtain the overall efficiency is very low (50%), and the LED current low precision control brightness can not be adjusted, it is generally only applied to smaller power, the occasion of a short time lighting, such as LED flashlight, LED downlight, LED ceiling light, COB LED downlight, LED tube and emergency lights.<\/p>\n
2, stable flow power source Vdd + ballast resistor R + electronic switch S manner: Figure 2 illustrated drive mode is Figure 3 drive mode of the improved manner, the advantage not only to improve the LED current control precision, but the LED brightness also can be by changing The electronic switch S off ratio to adjust. However, due to the series resistance and linear, the additional loss of the constant current power supply is higher, so the resulting overall efficiency is still low, the specific application range is more restricted.<\/p>\n
Switching drive applications<\/p>\n
Switch type driving good current control accuracy and a higher overall efficiency, the switched-mode driver can be obtained.<\/p>\n
Application mode is mainly divided into the buck boost two categories.<\/p>\n
1 buck switch driver: buck switch driver parallel drive case for the terminal voltage of the power supply voltage is higher than the LED or multiple LED.<\/p>\n
V\u00fdkladn\u00fd princ\u00edp obvahu spo\u010d\u00edva vo vyu\u017eit\u00ed pr\u00fadu rez\u00f3nancii z\u00edskan\u00e9ho pod\u013ea po\u017eiadaviek elektronick\u00e9ho sp\u00edna\u010da S na dosiahnutie po\u017eadovanej hodnoty pr\u00fadu If LED prostredn\u00edctvom negat\u00edvnej sp\u00e4tenej v\u00e4zby pr\u00fadu (odosoborovanie pr\u00fadu je prostredn\u00edctvom R0), tak\u017ee pr\u00fadiaci pr\u00fad If cez LED zostane stabiln\u00fd v ur\u010ditom rozsahu a dok\u00e1\u017ee zvl\u00e1dnu\u0165 ur\u010dit\u00fa funkciu stmievania. Induk\u010dnos\u0165 L na obr\u00e1zku pln\u00ed rolu, ktor\u00e1 hr\u00e1 kompenza\u010dn\u00fd efekt pri vyp\u00ednan\u00ed, akumuluje energiu a pri otvoren\u00ed S sa vypne, \u010d\u00edm sa zn\u00ed\u017ei v\u00fdkyv pr\u00fadu If p\u00fa\u0161\u0165aj\u00faceho cez LED. Boost sp\u00ednan\u00fd ovl\u00e1da\u010d Boost sp\u00ednan\u00fd ovl\u00e1da\u010d tandemov\u00ed ovl\u00e1da\u010d v pr\u00edpade, \u017ee nap\u00e1jacie nap\u00e4tie je ni\u017e\u0161ie ako nap\u00e4tie na termin\u00e1loch LED alebo viacer\u00fdch LED. <\/p>\n
Pracovn\u00fd princ\u00edp obvahu spo\u010d\u00edva vo vyu\u017eit\u00ed \u00falohy pod\u013ea po\u017eiadaviek elektronick\u00e9ho sp\u00edna\u010da S off-off. Po\u017eiadava, ke\u010f nap\u00e1janie Vdd skladuje energiu do induk\u010dnosti L pri S, pri otvoren\u00ed sa zmen\u00ed pol\u00e1rnos\u0165 nap\u00e4tia na L, S sa vypne a nap\u00e4\u0165ov\u00e1 hodnota Vf sa navrstv\u00ed tak, aby bola splnen\u00e1 po\u017eadovan\u00e1 hodnota pr\u00fadu If, ako aj nap\u00e4\u0165ov\u00e1 hodnota Vr, prostredn\u00edctvom efektu negat\u00edvnej sp\u00e4tenej v\u00e4zby pr\u00fadu (odosoborovanie pr\u00fadu), tak\u017ee pr\u00fad If pr\u00fadiaci cez LED m\u00e1 stmievaciu funkciu, ktor\u00fa je mo\u017en\u00e9 zvl\u00e1dnu\u0165 stabilne v ur\u010ditom rozsahu, s\u00fa\u010dasne prostredn\u00edctvom R0. <\/p>\n
<\/p>\n
Aplik\u00e1cie stmievania osvet\u013eovac\u00edch zariaden\u00ed LED <\/p>\n
\u00darove\u0148 osvetlenia bielym LED nie je vhodn\u00e1 pre line\u00e1rne prech\u00e1dzanie na zmenu segmentu na \u00fapravu jasu amplit\u00fady \u017eiariaceho pr\u00fadu If, mala by sa pou\u017e\u00edva\u0165 nezmenen\u00fd (pracovn\u00fd pr\u00fad LED), zmeni\u0165 len ak sa men\u00ed \u0161\u00edrka jednotkov\u00e9ho \u010dasov\u00e9ho pr\u00fadov\u00e9ho pulzu j, sp\u00f4sob stmievania, preto\u017ee sa t\u00fdm nezmen\u00ed jeho emisie spektrum sp\u00f4soben\u00e9 bielym odtie\u0148om. Aplik\u00e1cie stmievania pomocou nasleduj\u00facich sp\u00f4sobov: 1, modul\u00e1cia \u0161\u00edrky pulzu: modul\u00e1cia \u0161\u00edrky pulzu je be\u017en\u00fd sp\u00f4sob \u00fapravy jasu LED. Zmenou \u0161\u00edrky obd\u013a\u017enikov\u00e9ho pr\u00fadov\u00e9ho pulzu aplikovan\u00e9ho na LED tak, aby sa zmenil priemern\u00fd pr\u00fad na LED v v\u00e4\u010d\u0161om rozsahu, mo\u017eno dosiahnu\u0165 v\u00e4\u010d\u0161\u00ed rozsah stmievacieho efektu. <\/p>\n 2, modul\u00e1cia frekvencie: modul\u00e1cia frekvencie je in\u00fd sp\u00f4sob \u00fapravy jasu LED. Nezmenene udr\u017ea\u0165 \u0161\u00edrku obd\u013a\u017enikov\u00e9ho pr\u00fadov\u00e9ho pulzu aplikovan\u00e9ho na LED (amplit\u00fada nezmenen\u00e1), obd\u013a\u017enikov\u00fd pulz aplikovan\u00fd na LED zmenen\u00edm jednotkov\u00e9ho \u010dasu; ko\u013eko je po\u010det pr\u00fadu, tak\u017ee priemern\u00fd pr\u00fad na LED sa men\u00ed v v\u00e4\u010d\u0161om rozsahu, \u010do m\u00e1 v\u00e4\u010d\u0161\u00ed rozsah \u00fapravy, tak\u017ee osvet\u013eovacie zariadenia LED maj\u00fa v\u00e4\u010d\u0161\u00ed jas. <\/p>\n Schema a modulatiei pe unghi cu 3 biti: In modulatia pe unghi se foloseste o punga care contine o secventa de impulsuri in sistem binar, iar fiecare latime a secventei de impulsuri se alinuiete in conformitate cu proportia valorii sale de bit pentru a fi intinsa. Prin schimbarea unitatii de timp aplicate diodului LED pe impulsul dreptunghiular; valoarea de bit a curentului in larga extensibila ocupa, astfel incat curentul mediu pe diodul LED se schimba intr-o gama larga, pentru a ajusta luminozitatea LED-ului. <\/p>\n In concluzie, nivelul de iluminare al diodelor LED albe este un dispozitiv solid-state de emisie a luminii ca alternativa de putere mare pentru iluminatul general, desi intr-o anumita masura, viteza aplicarii este limitata de pretul actual, natura, dar deoarece are o performanta excelenta, odata cu tehnologia R D continua sa progreseze, diodele LED albe de clasa de iluminare pot fi previzibile si, cu siguranta, au un viitor bun. <\/p>","protected":false},"excerpt":{"rendered":" In order to ensure lighting-class white LED light is not only able to get a good application, but also higher efficiency, first you need to make it meet certain conditions, followed by the need to adapt the drive circuit to meet the the LDE working parameters to meet them . First, the application requirements of […]<\/p>\n","protected":false},"author":6,"featured_media":12596,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-12591","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-and-blog"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.iled-lights.com\/lb\/wp-json\/wp\/v2\/posts\/12591","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iled-lights.com\/lb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iled-lights.com\/lb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iled-lights.com\/lb\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iled-lights.com\/lb\/wp-json\/wp\/v2\/comments?post=12591"}],"version-history":[{"count":1,"href":"https:\/\/www.iled-lights.com\/lb\/wp-json\/wp\/v2\/posts\/12591\/revisions"}],"predecessor-version":[{"id":12597,"href":"https:\/\/www.iled-lights.com\/lb\/wp-json\/wp\/v2\/posts\/12591\/revisions\/12597"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iled-lights.com\/lb\/wp-json\/wp\/v2\/media\/12596"}],"wp:attachment":[{"href":"https:\/\/www.iled-lights.com\/lb\/wp-json\/wp\/v2\/media?parent=12591"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iled-lights.com\/lb\/wp-json\/wp\/v2\/categories?post=12591"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iled-lights.com\/lb\/wp-json\/wp\/v2\/tags?post=12591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"Triac](\"https:\/\/www2.iled-lights.com\/http:\/\/www2.iled-lights.com\/wp-content\/uploads\/2023\/08\/8.jpg\")
![\"Pannello](\"https:\/\/www2.iled-lights.com\/http:\/\/www2.iled-lights.com\/wp-content\/uploads\/2023\/08\/9.jpg\")
<\/p>\n![\"Paneele](\"https:\/\/www2.iled-lights.com\/http:\/\/www2.iled-lights.com\/wp-content\/uploads\/2023\/08\/10.jpg\")