LED e sebelisoa haholo le ho feta ho lisebelisoa tsa mabone.Ntle le melemo ea eona e ikhethang ho feta mekhoa e tloaelehileng ea mabone, ntle le ho ntlafatsa boleng ba bophelo, ho ntlafatsa bokhoni ba mehloli ea leseli le ho lelefatsa bophelo ba tšebeletso ea lisebelisoa tsa mabone, LED e sebelisa mosebetsi oa eona o ikhethang oa ho fifala ho fetola mocheso oa 'mala le khanya ea leseli. , mme e fihlella ka botlalo molemo o moholo oa lits'ebetso tsa ho boloka matla.

The dimming performance ofLebone la LEDLisebelisoa li ipapisitse le mohloli oa leseli la LED le phepelo ea motlakase ea ho khanna.

Ka kakaretso,Mehloli ea leseli la LEDe ka aroloa ka mekhahlelo e 'meli: mohloli o le mong oa leseli la diode ea LED kapa mohloli o khanyang oa LED o nang le khanyetso.Ka ts'ebeliso, ka linako tse ling mehloli ea leseli la LED e entsoe e le module e nang le converter ea DC-DC, 'me li-module tse joalo tse rarahaneng ha li buuoe sehloohong sena.Haeba mohloli oa leseli la LED kapa mojule e le diode e arohaneng ea LED ka boeona, mokhoa o tloaelehileng oa dimming ke ho lokisa boholo ba matla a motlakase a LED, kahoo khetho ea matla a koloi ea LED e lokela ho bua ka tšobotsi ena.

Maemo a tloaelehileng a ho fifala a LED:

Ha mokhanni oa matla a LED a nang le matla a feto-fetohang a sebelisoa bakeng sa mabone a khanyang a LED, deadtravel ke bothata bo tloaelehileng.Le hoja eMokhanni oa LEDphepelo ea motlakase e ka sebetsa hantle ha e tletse, ho hlakile hore dimming ha e boreleli ha mokhanni oa LED a se na mojaro o felletseng.

Tharollo ea Output Pulse Width Modulation (Output PWM)

Haeba matla a mokhanni oa LED a sebelisoa bakeng sa ho fifala ha leseli la LED tlas'a mojaro o felletseng, ha ho na bothata ba deadtravel.Khang e ka holimo ke 'nete, empa ha e sebetse haholo.Ha e le hantle, marapo a lebone la LED a atisa ho sebelisoa lits'ebetsong tse fapaneng (mabone a khabisitsoeng / mabone a thusang / mabone a papatso) moo bolelele bo ke keng ba lekanngoa ka nepo.Ka hona, tharollo e bonolo le e ntle ka ho fetisisa ea ts'ebeliso ke ho khetha ka nepo matla a mokhanni oa LED a nang le phallo ea phallo ea PWM dimming ho fihlela litlhoko tsa ho fifala tsa masela a mabone a LED.Khanya e hlahisoang e ka fokotsa phetoho e fifalang ea khanya ka lebaka la potoloho ea mojaro oa lets'oao le fifalang.Mekhahlelo ea bohlokoa ea ho khetha phepelo ea motlakase oa koloi ke qeto ea ho fifala le khafetsa ea phallo ea phallo ea phallo ea phallo ea PWM.Bophahamo bo fokolang ba ho fifatsa bo lokela ho ba tlase ho 0.1% ho fihlela qeto ea 8bit ea ho fifala ho kopana le lits'ebetso tsohle tsa ho fifala ha leseli la LED.Phatlalatso ea phallo ea phallo ea maqhubu a PWM e lokela ho ba holimo ka hohle kamoo ho ka khonehang, Ho thibela bothata bo fokolang ba leseli bo boletsoeng ho Lethathamo (I), ho ea ka lingoliloeng tse nepahetseng tsa lipatlisiso tsa tekheniki, maqhubu a kgothaletswa ho ba bonyane ho feta 1.25 kHz ho fokotsa patsi ya dipoko e bonahalang mahlong a batho.