![\"Icke](\"https:\/\/www2.iled-lights.com\/http:\/\/www2.iled-lights.com\/wp-content\/uploads\/2023\/08\/7.jpg\")
<\/p>\nF\u00f6r att s\u00e4kerst\u00e4lla att ljusklassens vita LED-ljus inte bara ger en god till\u00e4mpning utan \u00e4ven h\u00f6gre effektivitet, m\u00e5ste du f\u00f6rst uppfylla vissa villkor och d\u00e4refter anpassa drivkretsen f\u00f6r att tillfredsst\u00e4lla LED:ns arbetsparametrar.<\/p>\n
F\u00f6rst till\u00e4mpningskraven f\u00f6r LED-belysning<\/p>\n
1, drivkretsen drivs av en s\u00e4rskilt utformad str\u00f6mf\u00f6rs\u00f6rjning f\u00f6r LED:er, f\u00f6r att ha en enkel kretsstruktur, mindre yttre volym och h\u00f6g omvandlingseffektivitet.<\/p>\n
2, drivkretsens utg\u00e5ende elektriska parametrar (str\u00f6m och sp\u00e4nning) ska matcha LED:ens tekniska parametrar f\u00f6r att uppfylla kraven p\u00e5 LED:en, med h\u00f6guppl\u00f6st konstant str\u00f6mstyrning och l\u00e4mplig sp\u00e4nnsbegr\u00e4nsningsfunktion. Vid flercanalutg\u00e5ngar ska varje kanal kontrolleras individuellt.<\/p>\n
3, med linj\u00e4rare d\u00e4mpningsfunktion f\u00f6r att uppfylla olika till\u00e4mpningars krav p\u00e5 ljusstyrkereglering av LED.<\/p>\n
I ett avvikande tillst\u00e5nd (LED-kortslutning, \u00f6ppen krets, fel i drivkretsen) har kretsen, LED:en och anv\u00e4ndarna den l\u00e4mpliga skyddseffekten.<\/p>\n
5, n\u00e4r drivkretsen arbetar ska den st\u00f6ra andra kretsers normala arbete s\u00e5 lite som m\u00f6jligt och uppfylla kraven p\u00e5 elektromagnetisk kompatibilitet.<\/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
Den huvudsakliga principen f\u00f6r kretsen \u00e4r att anv\u00e4nda hugget str\u00f6m som erh\u00e5lls i enlighet med kraven fr\u00e5n den elektroniska commutatorn S, f\u00f6r att uppn\u00e5 den \u00f6nskade str\u00f6mledarstr\u00f6mmen If genom negativ feedback p\u00e5 str\u00f6mmen (str\u00f6mprovet via R0), s\u00e5 att str\u00f6mmen If som passerar genom LED:en \u00e4r stabil inom ett visst intervall och kan hantera en viss dimmerfunktion. Induktansen L i figuren har den friluande effekten att lagra energi n\u00e4r S st\u00e4ngs av, och n\u00e4r den \u00f6ppnas, f\u00f6r att minska fluktuationerna i str\u00f6mmen If som passerar genom LED:en. \u00d6kade commutatorf\u00f6rare. Tandemdriftsfallet f\u00f6r str\u00f6mingsp\u00e4nning som \u00e4r l\u00e4gre \u00e4n terminalsp\u00e4nningen hos LED:en eller flera LED:er.<\/p>\n
Huvudprincipen f\u00f6r kretsens funktion \u00e4r att anv\u00e4nda den elektroniska commutatorns S av-av-funktion i enlighet med kraven. N\u00e4r matningssp\u00e4nningen Vdd till spolen L laddas i S, v\u00e4nder sp\u00e4nningens polaritet p\u00e5 L n\u00e4r S st\u00e4ngs av och matningssp\u00e4nningen Vf l\u00e4ggs till f\u00f6r att uppfylla str\u00f6mledarstr\u00f6mv\u00e4rdet If, och sp\u00e4nningens v\u00e4rde Vr, genom str\u00f6mmens negativa feedback-effekt (str\u00f6mprovet via R0), s\u00e5 att str\u00f6mmen If som passerar genom LED:en har en dimmerfunktion som kan hantera ett stabilt intervall inom ett visst omr\u00e5de.<\/p>\n
<\/p>\n
Dimmrings applikationer f\u00f6r LED-lampor<\/p>\n
Vit LED-belysningsniv\u00e5 \u00e4r inte l\u00e4mplig f\u00f6r en linj\u00e4r \u00f6verf\u00f6ring f\u00f6r att \u00e4ndra segmentet f\u00f6r att justera ljusstyrkan hos den lumin\u00f6sa amplituden hos str\u00f6men If, b\u00f6r anv\u00e4ndas of\u00f6r\u00e4ndrad (LED arbetsstr\u00f6m) \u00e4ndra endast om enhetstiden str\u00f6mimpuls j breddm\u00e4ssig dimning, eftersom det inte kommer att \u00e4ndra dess luminescensspektror orsakade av vit f\u00e4rgkast. Dimmringsapplikationer med f\u00f6ljande metoder: 1, pulsbreddmodulation: pulsbreddmodulation \u00e4r en vanlig justering av LED-brightness. Genom att \u00e4ndra bredden av den rektangul\u00e4ra pulsstr\u00f6m som tillf\u00f6rs LED p\u00e5, s\u00e5 att medelstr\u00f6mmen p\u00e5 LED \u00e4ndras inom ett st\u00f6rre omf\u00e5ng kan ett st\u00f6rre omf\u00e5ng av dimningseffekt uppn\u00e5s.<\/p>\n 2, frekvensmodulation: frekvensmodulation \u00e4r ett annat s\u00e4tt att justera LED-brightness. Of\u00f6r\u00e4ndrad att bibeh\u00e5lla bredden av den rektangul\u00e4ra pulsstr\u00f6m som tillf\u00f6rs LED (amplituderna of\u00f6r\u00e4ndrade), en rektangul\u00e4r puls som tillf\u00f6rs LED genom att variera enhetstiden; hur m\u00e5nga str\u00f6mmar, s\u00e5 att medelstr\u00f6mmen p\u00e5 LED \u00e4ndras inom ett st\u00f6rre omf\u00e5ng, att ha ett st\u00f6rre omf\u00e5ng av justering s\u00e5 att LED-lampor har mer belysning.<\/p>\n 3 bit vinkelmoduleringsplan: I vinkelmodulering anv\u00e4nds en h\u00e4rfot som inneh\u00e5ller en bin\u00e4r sekvens av pulser, och varje pulssekvens av en bredd i enlighet med proportionen av dess bitv\u00e4rde att str\u00e4cka. Genom att \u00e4ndra enhetstiden som tillf\u00f6rs LED p\u00e5 den rektangul\u00e4ra pulsen; upptar bitv\u00e4rde av str\u00f6mmen i ut\u00f6kbar bredd, s\u00e5 att medelstr\u00f6mmen p\u00e5 LED \u00e4ndras inom ett stort omf\u00e5ng, f\u00f6r att justera LED-brightness.<\/p>\n F\u00f6r att sammanfatta, belysningsniv\u00e5n f\u00f6r vit LED \u00e4r ett fasttillst\u00e5ndsljudemittande enhet f\u00f6r h\u00f6g-effekters alternativ f\u00f6r allm\u00e4n belysning, \u00e4ven om i viss utstr\u00e4ckning, begr\u00e4nsar hastigheten p\u00e5 till\u00e4mpningen beroende p\u00e5 nuvarande pris, naturen, men eftersom den har utm\u00e4rkt prestanda, med R D-tekniken forts\u00e4tter att framstega, kan belysningsklassens vita LEDs f\u00f6rutses och har s\u00e4kert ett gott utrymme.<\/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\/sv\/wp-json\/wp\/v2\/posts\/12591","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iled-lights.com\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iled-lights.com\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iled-lights.com\/sv\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iled-lights.com\/sv\/wp-json\/wp\/v2\/comments?post=12591"}],"version-history":[{"count":1,"href":"https:\/\/www.iled-lights.com\/sv\/wp-json\/wp\/v2\/posts\/12591\/revisions"}],"predecessor-version":[{"id":12597,"href":"https:\/\/www.iled-lights.com\/sv\/wp-json\/wp\/v2\/posts\/12591\/revisions\/12597"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iled-lights.com\/sv\/wp-json\/wp\/v2\/media\/12596"}],"wp:attachment":[{"href":"https:\/\/www.iled-lights.com\/sv\/wp-json\/wp\/v2\/media?parent=12591"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iled-lights.com\/sv\/wp-json\/wp\/v2\/categories?post=12591"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iled-lights.com\/sv\/wp-json\/wp\/v2\/tags?post=12591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"Triac-dimmningsbara](\"https:\/\/www2.iled-lights.com\/http:\/\/www2.iled-lights.com\/wp-content\/uploads\/2023\/08\/8.jpg\")
![\"0-10V](\"https:\/\/www2.iled-lights.com\/http:\/\/www2.iled-lights.com\/wp-content\/uploads\/2023\/08\/9.jpg\")
<\/p>\n![\"DALI-dimmningsbara](\"https:\/\/www2.iled-lights.com\/http:\/\/www2.iled-lights.com\/wp-content\/uploads\/2023\/08\/10.jpg\")