Ana amfani da LED da yawa a cikin kayan aikin hasken wuta. Baya ga fa'idodinsa na musamman akan hanyoyin walƙiya na gargajiya, baya ga haɓaka ingancin rayuwa, haɓaka ingantaccen hanyoyin haske da tsawaita rayuwar kayan aikin hasken wuta, LED yana amfani da aikin dimming na musamman don canza yanayin zafin launi da haske na haske. , kuma yana samun cikakkiyar fa'ida mafi girma na aikace-aikacen ceton makamashi.

The dimming yadda ya dace naLED fitilukayan aiki sun dogara da madaidaicin tushen hasken LED da samar da wutar lantarki.

Gabaɗaya,Tushen hasken LEDza a iya raba kashi biyu: daya LED diode haske tushen ko LED diode haske tushen tare da juriya. A cikin aikace-aikacen, wani lokaci ana tsara hanyoyin hasken LED azaman ƙirar mai ɗauke da DC-DC, kuma ba a tattauna irin waɗannan rikitattun kayayyaki a cikin wannan labarin ba. Idan tushen hasken LED ko module ɗin keɓaɓɓen diode ne na LED da kansa, hanyar dimming gama gari shine daidaita girman shigarwar LED na yanzu, don haka zaɓin ikon tuƙi na LED yakamata ya koma ga wannan fasalin.

Na yau da kullun na LED matalauta dimming yanayi:

Lokacin da aka yi amfani da direban wutar lantarki tare da daidaitaccen fitarwa na halin yanzu don rage hasken LED, matattu matsala ce ta gama gari. Ko da yakeDireba LEDwutar lantarki na iya aiki da kyau lokacin da yake cike da kaya, a bayyane yake cewa dimming ba ya da santsi lokacin da direban LED ba ya cika kaya.

Magani na Ƙarfafa Nisa Modulation na Pulse (Fitowar PWM)

Idan ana amfani da ikon direba na LED don madaidaicin sandar hasken LED a ƙarƙashin cikakken kaya, babu matsala na mutuwa. Maganar da ke sama gaskiya ce, amma ba ta da amfani sosai. A zahiri, ana amfani da fitilun hasken LED sau da yawa a aikace-aikace daban-daban (hasken kayan ado / hasken haske / hasken talla) inda ba za a iya ƙididdige tsayin daidai ba. Sabili da haka, mafi sauƙi kuma mafi kyawun maganin aikace-aikacen shine daidai zaɓin ikon direba na LED tare da aikin bugun bugun jini mai nisa PWM dimming don cimma buƙatun dimming na raƙuman haske na LED. Hasken fitarwa zai iya rage raguwar canjin haske ta hanyar zagayowar lodin siginar dimming. Mahimman sigogi don zaɓar samar da wutar lantarki shine ƙudurin dimming da mitar fitowar bugun jini mai faɗin daidaitawa PWM. Matsakaicin iyawar dimming yakamata ya zama ƙasa da 0.1% don cimma ƙudurin dimming 8bit don saduwa da duk aikace-aikacen dimming sandar hasken LED. Matsakaicin saurin bugun bugun bugun jini ya kamata ya zama mai girma kamar yadda zai yiwu, Don hana matsalar flicker haske da aka ambata a cikin Tebura (I), bisa ga wallafe-wallafen bincike na fasaha masu dacewa, ana ba da shawarar mitar ya zama aƙalla sama da 1.25 kHz don rage girman flicker na fatalwowi ganuwa ga idanun mutane.