PWM ni CCR dimming si tɛ se sɔrɔ ko bɛɛ la. Fɛɛrɛ min ka fisa, o bɛ bɔ i ka baarakɛcogo la. Nin pwm ni ccr dimming sumalen in bɛ flicker, baarakɛcogo ɲuman, kulɛri sabatili, musaka, ani bɛnkan ɲɛfɔ. I bɛ desizɔn ɲɛminɛcogo nafama dɔ fana sɔrɔ a laban na.
PWM bɛ LED da ani ka a faga ni frequency ye, ka sɔrɔ CCR (Constant Current Reduction) bɛ to ka LED kuran dɔgɔya. LED bolibaga min bɛ se ka dimi, sugandili bɛ PWM ni CCR cɛ, o bɛ nɔ bila flicker baarakɛcogo la, kulɛri sabatili la, dimming depth, thermal behavior, ani system compatibilité.
Fɛɛrɛ fila si tɛ fisaya diɲɛ fan bɛɛ la. Dimi kɛcogo ɲuman bɛ bɔ LED doni na, dimi hakɛ wajibiyalen, a kɔlɔsili fɛɛrɛ, yeelen sigida, ani baarakɛcogo wajibiyalenw. Yɔrɔ dɔw mago bɛ zeru flicker na kameraw ni ɲɛw kama. Dɔ wɛrɛw mago bɛ dimi juguman na ni baarakɛnafolo gɛlɛn ye. I ka jaabi sigilen bɛ o kunnafoni fitininw de la, a tɛ sigi setigi kelen kan.
Tablo kɔnɔkow
Toggle (Tɔglɛ) kɛ
Takeaways (Takeaways) kunbabaw
PWM dimming bɛ LEDw lawuli ani ka faga joona kosɛbɛ, ka sɔrɔ CCR dimming bɛ dɔ bɔ kuran bolicogo la cogo nɔgɔman na.
PWM dimming bɛ se ka waati yeelen sɛgɛsɛgɛli kɛ, k’a sɔrɔ CCR bɛ caman kɛ ka modulation dɔgɔman di ka bɔ dimming fɛɛrɛ yɛrɛ la. Nka, flicker baarakɛcogo bɛɛ bɛ bɔ LED driver dilancogo dafalen na.
PWM dimi bɛ kulɛri to a cogo kelen na, nka CCR dimming bɛ se ka kulɛri sumaya ni i bɛ dimi.
PWM bolifɛnw musaka ka dɔgɔ ani u bɛ baara kɛ ni kunnafonidilan caman ye, nka CCR bolifɛnw mago bɛ yɔrɔ caman na ani funteni kɔlɔsili.
Aw bɛ CCR ta yɔrɔw la minnu bɛ sɔgɔsɔgɔ, i n’a fɔ dɔgɔtɔrɔsow. A ta fana baara minnu kama, kulɛri nafa ka bon yɔrɔ minnu na, i n’a fɔ studio (studio).
Aw bɛ PWM kɛ porozew kama minnu musaka ka dɔgɔ walima ni aw mago bɛ yeelen dɔgɔyalenba la kosɛbɛ 10% duguma.
Hybride drivers bɛ o fɛɛrɛ fila bɛɛ fara ɲɔgɔn kan walasa ka flicker tigɛ ani ka dimming range bonya.
Aw bɛ a lajɛ tuma bɛɛ ni aw ka dimi bɛ baara kɛ ni... LED bolibaga walasa a kana sɔgɔsɔgɔ walima ka mankan bɔ ni TRIAC dimmer kɔrɔw ye.
PWM ni CCR Dimming bɛ baara kɛ cogo min na
PWM Dimming basigilenw
PWM dimming kɔrɔ ye pulse width modulation ye. A bɛ LED dɔ da ani ka a faga ni frequency (fɔkan) dɔ ye min latigɛra. Sotigi bɛ LED bɛ to ka yeelen bɔ waati hakɛ min na, a bɛ o kɔlɔsi cycle kelen-kelen bɛɛ kɔnɔ. O waati-dafalen-yɔrɔ in bɛ Weele ko baarakɛ-yɔrɔ. 50% baarakɛcogo kɔrɔ ye ko LED bɛ kɛnɛ kan sɛgɛsɛgɛli kelen-kelen bɛɛ tilancɛ kɔnɔ. I ɲɛ bɛ o sɛgɛsɛgɛli teliya in ɲagami ka kɛ yeelen hakɛ basigilen ye. Baarakɛcogo bɛ o yeelen hakɛ sigi.
Duty Cycle Control (Baarakɛlaw ka cycle Control).
Jɛɲɔgɔnya min bɛ baarakɛcogo ni yeelen min bɛ ye, o tɛ tilennen ye. Hadamaden ka yeli bɛ kɛ ni yeelen ye cogo la min tɛ sinsinni ye. Duty cycles dɔgɔmanw bɛ i ko u bɛ kɛnɛya kosɛbɛ kaban. Tablo min bɛ duguma, o bɛ o nɔ in jira.
Baara kɛcogo
Yeelen min bɛ ye (ka kɛɲɛ ni a hakɛ cayalenba ye) .
Baarabolodacogo tilennen ka bɔ 0% na ka se 100% ma, o tɛ yeelen min bɛ ye, o wulicogo tilennen dɔ lase. Ni 5% baarakɛta ye, yeelen min bɛ ye, o bɛ tɛmɛ 20% kan a danma. Ni 20% baara kɛra, a bɛ se ka se 50% ma a danma. Gama latilenni bɛ o bɛnbaliya in ɲɛnabɔ. A bɛ baara Kɛ ni yeelenko kurulen ye min bɛ Se kà Kɔrɔta. Gama hakɛ min bɛ sɔrɔ ɲɔgɔn fɛ, o ye 2,2 ye. Walasa ka yeelen tilancɛ sɔrɔ, baarakɛcogo ye 0,5^2,2 ye, o bɛ bɛn 21,76% ɲɔgɔn ma.
On/Off (Don/Off) sɛgɛsɛgɛli
LED min bɛ PWM dimming circuit kɔnɔ, o tɛ sigi abada kurunba yɔrɔ dɔ la. A bɛ boli ni kuran dafalen ye walima ni kuran zeru ye. O wale in bɛ LED to a ka baarakɛyɔrɔ la min latigɛra a waati la. Switching frequency bɛ to sanfɛ fo i tɛ pulse kelenw ye. I bɛ yeelen bɔli hakɛ danmadɔ dɔrɔn de ye. O dilancogo in b’a to PWM dimming kɔlɔsili ka nɔgɔn ni signal numériquew ye.
CCR Dimming basigilenw
CCR dimming, n’a bɛ fɔ fana ko constant current reduction walima analog dimming, o bɛ sira wɛrɛ ta. E led driver bɛ ɲɛfɛla wulicogo minɛ ka jɔ ani ka ɲɛfɛla kurunba jigin o nɔ na. Yeelen fanga bɛ Bɔ ɲɛfɛla la, wa o jɛgɛn in bɛ surunya 'yɔrɔ la. I bɛ led (led) dim ni current (kurun) ɲɛnabɔli ye, i tɛ signal (signal) tigɛ.
Linear Current Dɔgɔyali
Ni kuran dɔgɔyali dimi bɛ to sen na, bolifɛntigi bɛ kuran min cilen don led ma, o bɛ jigin ka taa a fɛ. Fɛnɲɛnɛma-kurun bɛ Yɛlɛma ni dimi hakɛ ye cogo nɔgɔman na, cogo basigilen na. Yɛlɛmako si tɛ kɛ. Yeelen bɔli bɛ tugu kurunba kɔ ka jigin dɔɔnin dɔɔnin. Nin fɛɛrɛ in ma fɔ jukɔrɔ 10% ka dimi . Ni kuran ka dɔgɔn kosɛbɛ, ledw tɛ baara kɛ ka ɲɛ ani u bɛ yeelen bɔli jira min tɛ se ka fɔ ka ɲɛ. Drive currents duguma fana bɛ se ka kɛ sababu ye ka kulɛriw danfara.
Amplitude (Amplitude (Amplitude) Dimi).
Amplitude dimming bɛ sisan jikuruw janya Changer sanni ka a bonya Changer. Led bɛ to a kan waati bɛɛ. A bɔli amplitude bɛ Dɔgɔya n’i bɛ dimi. Nin baara jɔlen in bɛ bɛn baarakɛminɛnw ma minnu mago bɛ yeelenbɔlan saniyalen ni sabatilen na. Led yeelen bɛ to a cogo la spektrum kɔnɔ bawo drive current bɛ to low-current mara sabatibali sanfɛ.
PWM dimming bɛ baara kɛ ni switching regulation ye. Led driver bɛ bɔli daminɛ ani ka faga joona. CCR bɛ baara kɛ ni regulation lineaire ye. Led driver bɛ to ka sisan hakɛ ladilan. Switching bɛ bɔli kɛ ni pulsed ye. Regulation lineaire bɛ bɔli sabatilen Kɛ. O danfara kelen in de bɛ jagokɛcogo fanba bila fɛɛrɛ fila ninnu cɛ.
Sofɛrɛ ka Circuit Design
Led dimmable bɛ se ka PWM walima CCR dɛmɛ, nka a tɛ kɛ tuma bɛɛ u fila bɛɛ la. PWM dimming drivers mago bɛ switching stage ani controller la min bɛ baara kɛcogo sigi sen kan. CCR bolilaw mago bɛ regulation linear stage la min bɛ current ladilan k’a sɔrɔ a ma switching kɛ. Circuit topologies fila ninnu tɛ kelen ye component jate la, funteni cogoya la, ani control interface la. O la, i ka dimi fɛɛrɛ sugandilen bɛ a bɛɛ cogoya led driver design , a tɛ kɛ control signal dɔrɔn ye.
Flicker in PWM ni CCR Dimming
PWM Dimming Flicker ye
Yɛrɛlabɔli min bɛ kɛ ni Frequency dɔgɔman ye
PWM dimming bɛ i ka LED lawuli ani ka faga siɲɛ caman segin o segin. A ka c’a la, pulse width modulation bɛ boli 100 Hz ni 400 Hz cɛ . Aw ɲɛ bɛ se ka o jiginni ye i n’a fɔ fɛn min bɛ wuli, kɛrɛnkɛrɛnnenya la aw ka yeli da la. Frequences (fɔkan minnu bɛ 80 Hz duguma) bɛ yeelen caman Changer, mɔgɔ minnu jɔlen bɛ yɔrɔ kelen na, olu bɛ se k’u kɔlɔsi nɔgɔya la. A bɛ daminɛ 15 fo 20 Hz la, o bɛ kɛ sababu ye ka flicker min kɔlɔsi kosɛbɛ. 70 Hz duguma , flicker bɛ a to a ka gɛlɛn ka sɛbɛnni kalan ani ka kunnafoni ɲumanw ye. Kalanbaga dɔ ye o gɛlɛya ɲɛfɔ ka jɛya:
'Ne bɛ se k'o fɔ aw ye.' yeelenw sɔgɔsɔgɔli bɛ n ka kunkolodimi juguya . Hali hertz 120 min bɛ bɔ fluorescent lanpanw na, o bɛna nɔ bila ne la... LED lanpanw tɛ foyi ɲɛ... hali nɔgɔmanw bɛ strobe.'
Sanfɛ 2kHz Dakun
I bɛ se k’a miiri ko fɛn caman sɛgɛsɛgɛli teliya bɛ fɛn bɛɛ labɛn. A tɛ o kɛ. Mɔgɔw bɛ se ka flicker artifacts ye at 500 Hz ye . Flicker (flicker) min bɛ se ka kɛ 2000 Hz ye, o bɛ se ka ye ɲɛ lamaga teliya waatiw la. A ka c’a la, stroboscope nɔ bɛ kɛ 80 ni 2000 Hz cɛ. Mɔgɔ dɔw fɛ, a bɛ Taa fo 10.000 Hz. Ɲininikɛlaw b’a jira ko frequences (fɔkanw) ka tɛmɛ 3000 Hz kan walasa ka nɔ bila farikolo la. O dakun in bɛ PWM bolibaga jɔnjɔn fanba gɛn ka bɔ flicker safe dimming range la.
CCR Baarakɛcogo min tɛ Flicker ye
Kow tɛ kɛ minnu bɛ ɲɔgɔn falen-falen
Kuran dɔgɔyali dimi tuma bɛɛ bɛ o gɛlɛya in jɔ a bɔyɔrɔ la. Sotigi bɛ sisan fɛnw jigin sanni a ka lanpan mana ani ka a faga. I ka LED tɛ wuli joona abada, o la bɔli bɛ to ka ɲɛ waati kɔnɔ sanni ka kɛ ni wulikan ye. Switching events tɛ kɛ, o kɔrɔ ye ko flicker banding tɛ yen ani stroboscopic artifacts tɛ yen. O kurunbokari sabatilen in bɛ CCR di sebaaya jɛlen ma flicker baarakɛcogo la.
Wideyo ni kamera baara
Kameraw bɛ flicker jira min bɛ i ɲɛw to yen. Dalan min bɛ wuli, o bɛ yeelen sɛgɛsɛgɛli kɛcogo minɛ i n’a fɔ bandiw karamɔgɔya fan bɛɛ la. CCR bɛ o fɛn dilannen in bɔ yen bawo yeelen bɔli tɛ wuli abada. Sigida minnu ka bon kosɛbɛ, yɔrɔ minnu tɛ flicker ye , i n’a fɔ furakɛli ni fotota yeelenw, olu bɛ bɔ o fɛɛrɛ in de la. Yeelen min bɛ mɛn waati jan kɔnɔ, o fana bɛ dɛmɛ, barisa yecogo degun bɛ dɔgɔya ni a bɔyɔrɔ tora a cogo la.
Flicker Sensitivity Factors (Flicker ka sɛgɛsɛgɛli kɛcogo).
Hadamadenw ka faamuyali danw
I ka sɛgɛnlafiɲɛbɔ bɛ bɔ fɛn damadɔ de la. Yeelen fanga nafa ka bon : flicker critical frequency bɛ wuli ni yeelen ye, ka bɔ 22 na ka se 25 Hz ma yeelen hakɛ dɔgɔman na fo ka se 90 Hz ma ni fanga ka bon. Walasa ka ja lamagannenw jira, a ka c’a la, hadamaden ka flicker fusion threshold bɛ sigi 48 ni 60 Hz cɛ . Hali ni i ye fɛn yebali ye i ka hakililata hakɛ sanfɛ, o bɛ se ka kɛ sababu ye ka kɛnɛyako juguw ni degun jaabiw lase mɔgɔ ma.
Masina yeli magow
Minɛnw bɛ yecogo wɛrɛ ye ka tɛmɛ i ta kan. Elektroretinogramme sumanikɛlanw bɛ flicker frequency values critiques (flicker frequency values) caman di ka tɛmɛ behavior-based kalanw kan, minnu bɛ perception (hakilila) jira min tɛ hakili la, conscients thresholds (daɲɛw) sanfɛ. Kɔnɔw bɛ Se dakunw ma minnu ka bon kosɛbɛ ka Tɛmɛ hadamadenw kan. Ni kameraw, sensɛriw walima otomatiki sɛgɛsɛgɛli bɛ i ka sigicogo la, i ka flicker jate i n’a fɔ masin yecogo gɛlɛya, i kana kɛ hadamadenw ka dususalo dɔrɔn ye.
LED Driver Dimming fɛɛrɛw ka baarakɛcogo ɲuman
PWM ka baarakɛcogo ɲuman ni Dimming dɔgɔman ye
Tɔnɔ minnu bɛ kɛ waati kɔnɔ, olu dɔgɔyara
PWM dimming bɛ LED to a ka current dafalen na on-pulse kelen-kelen bɛɛ waati. Conduction bɔnɛw bɛ to dɔgɔya la bawo... LED bolibaga bɛ waati dɔɔnin kɛ ka fanga di ni i bɛ dimi. 20% baarakɛcogo kɔrɔ ye ko LED bɛ baara kɛ sɛgɛsɛgɛli kelen-kelen bɛɛ tilancɛ duurunan dɔrɔn de la. Tɔnɔ minnu bɛ ɲɔgɔn falen-falen, olu bɛ to o cogo kelen na, o la bɔnɛ bɛɛ bɛ jigin ni yeelen bɛ dɔgɔya. O bɛ PWM dimming di efficiency win jɛlen ma dimming hakɛ dɔgɔmanw na. Pwm ni ccr dimming sangali bɛ daminɛ yan tuma caman na, bawo baarakɛcogo ɲuman bɔli dɔgɔya la, o de bɛ fɛɛrɛ fila ninnu fara ɲɔgɔn kan.
Baarakɛcogo sabatilen sisan
LED min bɛ PWM dimming circuit kɔnɔ, o bɛ baara kɛ tuma bɛɛ a ka current hakɛ la. O kurunba jɔlen in bɛ LED to a ka baara kɛ a ka yɔrɔ la min bɛ baara kɛ kosɛbɛ. I b’i yɛrɛ tanga baarakɛcogo jugu ma min bɛ sɔrɔ LED boli la ni kuran dɔgɔyalenba ye. O la, PWM dimming drivers bɛ baara barikama di dimming range caman kɔnɔ. O dimi fɛɛrɛ in fana bɛ a yɛrɛ tanga kulɛri caman cili ma min bɛ se ka jira ni kuran dɔgɔyara kojugu.
CCR ka baarakɛcogo ɲuman ni Dimming dɔgɔman ye
Dɔ farala bolifɛntigiw ka bɔnɛw kan
CCR dimming bɛ kuran jigin LED fɛ. LED bolibaga ka kan ka tension wɛrɛ jigin a ka linear regulation stage kan. O tension tiɲɛnen bɛ wuli ka kɛ funteni ye. Ni i bɛ fiyen ka taa a fɛ, tension (voltaji) jigincogo bɛ bonya ka taa a fɛ bolifɛntigi kan. Bololabaarakɛlaw ka bɔnɛ bɛ wuli kosɛbɛ ni dimi hakɛ dɔgɔyara. O b’a to CCR dimming tɛ baara kɛ ka ɲɛ ka tɛmɛ PWM dimming kan dimi jugumanw na. CCR ka flicker baarakɛcogo bɛ to ka ɲɛ, nka baarakɛcogo ɲuman bɛ bɔnɛ ta.
Funteni Labɔli
Funteni min bɛ Bɔ 'regulation lineaire la, o bɛ gɛlɛya lakika dɔ Dabɔ dilancogo la. Aw mago bɛ funteni-minɛn belebelebaw la ani funteni-minɛn caman na. O funteni in fana bɛ nɔ bila LED yɛrɛ la. Funteni caman bɛ LED ka ɲɛnamaya surunya ani a bɛ se ka kulɛri bɔli caman wuli. O la, CCR dimming mago bɛ funteni dilanni na ni hakili ye, kɛrɛnkɛrɛnnenya la fixtures datugulenw na. Led yeelen dilancogo caman bɛ yɔrɔ jan CCR la o de kama.
Points de crossover (kɛrɛnkɛrɛnnenya la) minnu bɛ se ka kɛ
Ni PWM ye Edge bɔnɛ
PWM dimming bɛ bɔnɛ a ka baarakɛcogo ɲuman dan na ni baarakɛcogo dɔgɔyara kosɛbɛ. Tɔnɔ minnu bɛ ɲɔgɔn falen-falen, olu bɛ kɛ bɔnɛ bɛɛ lajɛlen tilayɔrɔba ye. Sotigi bɛ sɛgɛsɛgɛli kɛ hali bi ni tension dafalen ye, o la switching ko kelen-kelen bɛɛ bɛ fanga tiɲɛ. Ni baarakɛcogo dɔgɔyara kosɛbɛ, PWM dimming efficiency bɛ jigin cogo la i bɛ se k’a kɔlɔsi. Kuranko fana bɛ bonya ni switching frequences (switching frequences) ka bon. Flicker fana bɛ se ka ye o baarakɛcogo dɔgɔmanninw na.
Ni CCR bɔnɛna Edge la
CCR dimming bɛ bɔnɛ a da la tuma o tuma ni voltage danfara bɛ supply ni LED cɛ. O danfara bɛ kɛ funteni tiɲɛnen ye. CCR fana bɛ kɛlɛ kɛ 10% dimi jukɔrɔ, yɔrɔ min na LED baarakɛcogo bɛ kɛ fɛn ye min tɛ se ka fɔ. Walasa ka dimi juguman kɛ ni baarakɛcogo ɲuman ye, PWM dimi bɛ to sugandili ɲuman ye. Bololabaarakɛla fila bɛ se ka kɛ kelen ye, o bɛɛ n’a ta, u ka dimi kɛcogo tɛ kelen ye kosɛbɛ.
Kulɛriw ka ɲɔgɔndɛmɛ ani yeelen cogoya
PWM ani Kulɛri jiginni
Spectral Stability (Sɛbɛnni spektral) On-Time (Waati la
PWM dimming bɛ LED to a ka current dafalen na on-pulse bɛɛ waati. Semikɔndukiri ɲɔgɔndan bɛ To funteni ni tabaga density (taamakɛla density) sabatilen na. Nin baarakɛyɔrɔ sabatilen bɛ fɛnɲɛnamafagalanw bɔli spektrum to cogo kelen na dimming range dafalen kɔnɔ. I ka yɔrɔ finman bɛ to i y’a sigi yɔrɔ min na, hali n’i bɛ led yeelen jigin.
Baarakɛminɛnw dɔgɔyali nɔfɛkow
Tablo min bɛ duguma, o b’a jira cogo min na dimi fɛɛrɛ kelen-kelen bɛɛ bɛ nɔ bila kulɛri la n’i bɛ dimi ka bɔ bɔli dafalen na ka se 1% ma.
PWM dimming bɛ CCT minɛ ±50K kɔnɔ ani ka CRI mara bɔli dafalen yɔrɔ 2 kɔnɔ ni 10% dimming ye. Led bɛ to a kulɛri la bawo puce tɛ bɔ a ka baarakɛyɔrɔ hakɛ la abada.
CCR ani Kulɛri sabatili
Spectrum min bɛ kɛ cogo kelen na
CCR dimming bɛ ɲɛfɛla kurunba min bɛ taa ɲɛ, o jigin o nɔ na. Ni 10% dimming, led bɛ 10% sɔrɔ rated current la. LED chromaticity tɛ tugu current kɔ layini tilennen na. Pɔnpe bulu janya bɛ wuli 2–4 nm, fosiforo jiginni nafa bɛ Changé, ani yɔrɔ finman bɛ wuli ka sumaya. Nin ye fizik ye, a tɛ dilancogo fili ye.
CRI ka baarakɛcogo ɲuman
CCR dimi bɛ CCT wuli ni 200–600K ye ka sumaya ani ka CRI jigin ni 5–15 ye ni 10% dimming ye. O drift bɛ CCR kɛ fɛn ye min tɛ bɛn CRI caman baara ma. Fixture min jate bɛ CRI 95 la a bɔli dafalen na, o bɛ se ka bin o taamasiyɛn jukɔrɔ kosɛbɛ ni i bɛ dimi. Baara minnu bɛ kɛ ni kulɛri ye, o bɔnɛ in min bɛ kɛ ni ɲɛmɔgɔya ye, o nafa ka bon ka tɛmɛ baarakɛcogo ɲuman sɔrɔli bɛɛ kan.
Kulɛri-kɔrɔ-fɔcogo
Studio ani Fotografie
Studiow mago bɛ kulɛri funteni sabatilen na yeelen hakɛ bɛɛ la. PWM dimming bɛ o sabatili in lase. Fototalan bɛ se ka fiyen ka bɔ fanga dafalen na ka taa yeelen falen fitini na k’a sɔrɔ balansi finman ma wuli. CCR fitini tun bɛna kulɛri sumaya gɛlɛya ni yeelen bɛ ka dɔgɔya, ka balansi finman kura wajibiya nivo bɛɛ la.
Dɔgɔtɔrɔso ni feerekɛyɔrɔw
Dɔgɔtɔrɔso yeelenw ni feerekɛyɔrɔw jiracogo fana bɛ bɔ kulɛriw tiɲɛni . Operelikɛla mago bɛ farikolo yɔrɔw la walasa u ɲɛda cogoya ka kɛ kelen ye yeelen sigicogo bɛɛ la. Fiyeerekɛla mago bɛ fini bilenman na walasa a ka to bilen yeelen fitini kɔrɔ. PWM dimming bɛ o ko fila bɛɛ tanga. CCR dimming bɛ drift sumayalen don min bɛ se ka fari ɲɛw, fini kulɛriw ani furaw sɛbɛnw jira cogo jugu la. Ni kulɛri kantigiya bɛ i ka sugandili bila sen kan, PWM dimming ye dimming fɛɛrɛ ye min ka fisa ni tɔw bɛɛ ye.
LED Drivers musaka ni u bɛnkan
PWM Sofɛrɛ musaka
Circuit Design nɔgɔman
PWM dimming driver dilanni musaka ka dɔgɔn ka tɛmɛ CCR driver kan. Circuit bɛ baara kɛ ni switching stage ye ani controleur nɔgɔman ye. Aw mago tɛ funteni-minɛn belebelebaw la walima funteni-minɛn gɛlɛnw na. O bɛ kɛ sababu ye ka fɛnw musaka dɔgɔya. PWM dimming driver fana bɛ boli ka nɛnɛ, o la i bɛ wari bɔ enclosure musakaw la. Kosɔn LED yeelen porozɛw bɛ kɛ ni baarakɛnafolo ye, PWM dimming ye sugandili nafama ye.
Kontrɔla ka bɛnkan
PWM dimming drivers bɛ baara kɛ ni controleur suguya caman ye. Aw bɛ se k’u baara ni taamasiyɛnw ye minnu bɛ kɛ ni nimɔrɔ ye, ni mikro-kontrɔla ye, walima ni dimmer module standard (dimmer modules) ye. O sɛgɛsɛgɛli in b’a to PWM dimming bɛ nɔgɔya ka fara dilan kura kan. PWM dimming drivers fanba bɛ sɔn 0-10V taamasiyɛn ma, PWM donna, walima nizɛri ladɛrɛsi protocol. I bɛ sugandi caman sɔrɔ ni custom engineering tɛ.
CCR Sofɛrɛ musaka
Labɛnni sinsinni gɛlɛya
CCR LED bolibaga mago bɛ ɲɛnabɔli kɛcogo sinsinni na. O dakun in bɛ tension (volta) wɛrɛ Dɔgɔya i n’a fɔ funteni. A dilanni ka kan ka o funteni kunbɛn ni funtenibɔlan belebelebaw ye ani ni a labɛncogo ɲuman ye. Control loop for steady current fana bɛ gɛlɛya dɔ fara a kan. O ko ninnu bɛ CCR LED bolifɛn musaka gɛlɛya ka tɛmɛ PWM dimi bolibaga ɲɔgɔn kan.
Component Jate
CCR bolilaw bɛ baara kɛ ni yɔrɔ caman ye ka tɛmɛ PWM dimming bolifɛnw kan. Aw mago bɛ tɛmɛsira transistorw, current-sense resistors, ani thermal protection circuits. Yɔrɔ kelen-kelen bɛɛ bɛ musaka fara a kan ani ka pankurun yɔrɔ ta. PWM dimming driver bɛ a yɛrɛ tanga o yɔrɔ fanba ma. Kɔnɔnafili hakɛ min ka ca, o fana bɛ dannaya dɔgɔya ani ka ɲɔgɔn lajɛ waati kɔrɔta.
Sistɛmu Intɛrinɛti
Dimmer Support min bɛ yen
I bɛna bɛnkan gɛlɛyaw sɔrɔ n’i ye dimi fɛɛrɛ fila la kelen fara ɲɔgɔn kan ni dimikɛlan kɔrɔw ye minnu tigɛra fasa. TRIAC dimɛri minnu bɛ ɲɛfɛ, olu ka teli ka gɛlɛya lase PWM ni CCR LED bolifɛnw fila bɛɛ ma. I bɛ se k’a ye flickering ni dimmer tɛ se ka doni minɛ. Buzzing walima humming bɛ kɛ ni TRIAC dimmer kɔrɔ dɔ bɛ ɲɔgɔn sɔrɔ ni LED driver ye. Dimming range fana bɛ se ka dɔgɔya bawo bolifɛntigi ka duguma dakun tɛ bɛn dimmer bɔli ma. Setup dɔw bɛ Bɔ yeelen hakɛ caman na. Yeelen min tɛ kelen ye fiɲɛbɔlan caman kɔnɔ, o b’a jira ko bolifɛntigi ka fɛnw tɛ bɛn ɲɔgɔn ma walima doni fitinin koɲɛw. O gɛlɛyaw bɛ jira ni PWM dimming ni CCR dimming fila bɛɛ ye, o la dimmer compatibilité lajɛ sani aw ka sanni kɛ.
Jateminɛ minnu bɛ kɛ ka segin-ka-bɔnye kɛ
Ka sitɛmu kɔrɔ dɔ labɛn kokura ni PWM dimming drivers ye, a ka c’a la, o ka nɔgɔn. Tuma caman na, aw bɛ se ka filiw mara minnu bɛ yen ani ka bolifɛntigi dɔrɔn bila u nɔ na. CCR bolilaw mago bɛ se ka kɛ dimɛri kura la ani funteni sira belebeleba la. Aw bɛ dimmer suguya ni doni fitinin lajɛ tuma bɛɛ. Dimɛri min bɛ bɛn ɲɔgɔn ma ani LED bolibaga min bɛ bɛn o ma, o bɛna dimi kɛcogo nɔgɔman di i ma, min bɛ se ka da i kan.
Desizɔn gafe min bɛ dimi fɛɛrɛw kan
Aw ye ja dafalen sɔrɔ sisan pwm vs ccr dimming kan. O kɔfɛta ye ka fɛɛrɛ in bɛn i ka poroze ma . Nin gafe in b’i bilasira ka tɛmɛn desizɔn jɔnjɔnw kan.
Gafe min bɛ desizɔnw tacogo kura lajɛ
Sugandili kɛcogo PWM ni CCR Dimming cɛ
Dimi fɛɛrɛ ɲuman bɛ bɔ LED bolibaga dafalen ni yeelenbɔcogo la sanni ka bɔ PWM walima CCR dɔrɔn de la.
Aw ye PWM jateminɛ Tuma min na
PWM bɛ se ka bɛn ni baarakɛminɛn in bɛ dimi yɔrɔba de wajibiya, nizɛri kunnafoni tigitigi, walima LED baarakɛcogo sabatili waati la. Walasa ka yeelen bɔ baarakɛlaw fɛ, aw bɛ bolifɛntigi dɔ sugandi min ka PWM frequency bɛnnen don ani min ka flicker baarakɛcogo sɛgɛsɛgɛlen don.
Aw ye CCR jateminɛ Tuma min na
CCR bɛ se ka bɛn ni waati yeelen jiginni dɔgɔyalenba ye fɔlɔ ye ani ni dimi hakɛ wajibiyalen bɛ se ka sɔrɔ k’a sɔrɔ kulɛri caman cili ma sɔn walima ni funteni bɔnɛ ma sɔn. LED ni bolifɛntigi ka kan ka jateminɛ ɲɔgɔn fɛ baarakɛyɔrɔ laɲininen bɛɛ la.
Aw ye jateminɛ kɛ Hybride Dimming kan
PWM + CCR dilancogo ɲɔgɔndanw bɛ se ka kuran dɔgɔyali banbali fara ɲɔgɔn kan bɔli hakɛ sanfɛtaw la ni PWM kɔlɔsili ye bɔli hakɛ dɔgɔmanw na. O fɛɛrɛ bɛ se ka dɛmɛ ka flicker baarakɛcogo, kulɛriw ɲɔgɔndan, baarakɛcogo ɲuman, ani dimming depth balansi, ka kɛɲɛ ni bolifɛntigi ka jɔcogo ye.
Ni aw bɛ LED bolibaga min bɛ se ka dimi, aw bɛ jateminɛ kɛ fana a ɲɛminɛyɔrɔ la, LED doni suguya, CV walima CC bɔli, doni fitinin, dimi yɔrɔ, funteni cogoya, ani seereyaw wajibiyalenw sani aw ka bolifɛn sugandi.
Tuma min na i ka kan ka PWM Sugandi
Porozɛ minnu bɛ musaka caman bɔ
PWM dimming drivers musaka ka dɔgɔn u jɔli n’u sigili la. Circuit bɛ baara kɛ ni yɔrɔ damadɔw ye ani a mago tɛ funtenibɔlan belebelebaw la. I bɛ wari mara fɛnw fatura la ani dasiri musakaw la. PWM dimming drivers fana bɛ baara kɛ ni controleur caman ye, i n’a fɔ 0-10V signals, microcontrôleurs, ani protocoles numériques. Ni budget-driven led lighting porozew kama, pwm dimming ye pick pratique ye.
Dimming (Dimming) min bɛ yɔrɔ jan
PWM dimming b’a ka baarakɛcogo ɲuman dancɛ to bɔli hakɛ dɔgɔmanw na. Led bɛ boli ni current dafalen ye on-pulse kelen-kelen bɛɛ waati, o la conduction bɔnɛw bɛ dɔgɔya ni i bɛ dimi. O bɛ dimi hakɛ caman di aw ma minnu bɛ se ka baara kɛ ni u ye. CCR bɛ kɛlɛ kɛ 10% dimming duguma, yɔrɔ min na led performance bɛ kɛ ko ye min tɛ se ka fɔ. Ni aw mago bɛ dimi juguman na ni baarakɛcogo sabatilen ye, pwm dimming drivers bɛ nɔ ɲumanw di.
Fɛɛrɛ minnu bɛ wele ko Hybride ani Adaptive
PWM ni CCR faralen ɲɔgɔn kan
Led driver design kuraw bɛ o fɛɛrɛ fila bɛɛ ɲagami ka kɛ sistɛm kelen ye. CCR bɛ yeelenba yɔrɔ minɛ , yɔrɔ min na a bɛ a yɛrɛ tanga flicker ma. PWM bɛ baara ta yeelen hakɛ dɔgɔmanw na walasa ka dimi hakɛ min bɛ se ka baara kɛ, o janya. O fɛɛrɛ ɲɔgɔndan in bɛ dan dɔw Ta ka Taa ɲɛ ka Bɔ o fɛɛrɛ fla bɛɛ la. A tɛ flicker ni consistency koɲɛw ɲɛnabɔ ka ɲɛ, kɛrɛnkɛrɛnnenya la ni yeelen min bɛ ye, o nafa ka bon ka tɛmɛ yeelen bɔli sumanlen kan. O bɛɛ n’a ta, a dilanni bɛ fɛɛrɛ kelen-kelen bɛɛ fanga fara ɲɔgɔn kan walasa ka baara bɛɛ kɛ ka ɲɛ.
Misali dɔ bɛ Bɔ Meteor (Meteor) la. U ka sofɛrɛ-platifɔmu min ye u yɛrɛ ta ye, o bɛ CCR ɲuman ni PWM kunnafoni tigitigi fara ɲɔgɔn kan walasa ka led flicker yebali dɔgɔya. A bɛ dimming sabatilen di walasa ka wideyow minɛ teliya la fo ka se 960 fps ye. Ottima Tech fana bɛ o fɛɛrɛ sugu dɔ ɲɛfɔ: analozi kurunba dɔgɔyali yeelenba yɔrɔ la ani PWM min bɛ kɛ ni frequencyba ye yeelen dɔgɔyalen yɔrɔ la. O bɛ to ka tiɲɛni ni kulɛriw ka ɲɔgɔndɛmɛ dimi ka tɛmɛn fɛn bɛɛ kan.
Sofɛrɛw ka sigida minnu bɛ ka bɔ kɛnɛ kan
Jagokɛlaw ka sofa ICw bɛ baara kɛ sisan ni hybride schemes ye silicon kɔnɔ. Dior Inc. AL5887Q ye 36-channel, mobili-grade led driver ye. A bɛ PWM hybride ni analog (CCR) dimming fara ɲɔgɔn kan. PWM dimming bɛ 100% datugu ka jigin ka se 3% baarakɛcogo . 3% duguma, puce bɛ wuli ka taa porogaramu nizɛri kunnafoni na min bɛ se ka CCR-equivalent dimming sɔrɔ. Nin tɛ laadala CCR analozi ciriw ye, nka a bɛ o nɔ kelen de di. O puce suguw b’a jira sugu bɛ taa yɔrɔ min na: adaptive systems minnu bɛ dimming fɛɛrɛ ɲuman ta yeelen hakɛ kelen-kelen bɛɛ kama.
I ka sugandili nafa ka bon hali bi. Ni aw b’a fɛ ka baara kɛ min bɛ flicker-sensitive walima color-critical baara kɛ, aw bɛ CCR sugandi. Ni aw b’a fɛ ka porozew kɛ minnu musaka ka dɔgɔ walima minnu bɛ dimi yɔrɔ caman na, aw bɛ PWM sugandi. Fɛn o fɛn bɛ u ni ɲɔgɔn cɛ, bolifɛntigiw bɛ cɛmancɛ sira di. I ka ɲinini wajibiyalenw jateminɛ fɔlɔ. Dimi fɛɛrɛ ɲuman bɛ tugu i magow la, a tɛ bɔ i ka fɛɛrɛ kɔrɔ la.
PWM bɛ se sɔrɔ baarakɛcogo ɲuman ni dimming range kan. CCR bɛ se sɔrɔ bɔli kan min tɛ flicker, kulɛri sabatilen.
CCR sugandi baara minnu bɛ kɛ ni flicker-sensitive walima color-critical baara ye. PWM sugandi porozɛw kama minnu musaka ka dɔgɔ walima dimi jugumanba kama. Aw ye aw yɛrɛ ka wajibiw kɔrɔbɔ fɔlɔ.
Hybride bolifɛnw bɛ PWM ni CCR ɲagami ɲɔgɔn na. U bɛ fɛɛrɛw Changer ni yeelen bɛ Changé. O bɛ flicker tigɛ ani ka dimming range janya. PWM bɛ bɔli dɔgɔyalenw ɲɛnabɔ; CCR bɛ bɔli sanfɛtaw ɲɛnabɔ. U faralen ɲɔgɔn kan, u bɛ dɔ bɔ flicker farati la. PWM flicker ni baarakɛwaati dɔgɔmanw ye ani CCR flicker ni kurunba caman ye, olu fila bɛɛ nafa ka bon. PWM flicker bɛ bɔ switching la; CCR flicker bɛ to a tɛ yen. PWM bɛ se sɔrɔ hali bi musaka kan. PWM flicker ni CCR flicker tɛ kelen ye. PWM flicker mago bɛ ladonni na ani PWM sɛgɛsɛgɛli la. CCR flicker bɛ to ka dɔgɔya. Bololabaarakɛlaw ka fɛɛrɛ bɛ ka taa ɲɛ.
Ɲininkaliw
Dimming fɛɛrɛ jumɛn bɛ kɛ sababu ye ka flicker?
PWM dimming bɛ kɛ sababu ye ka flicker kɛ bawo bolifɛntigi bɛ LED da ani ka a faga. Fɛrɛnkan minnu bɛ 80 Hz ni 2000 Hz cɛ, olu bɛ kɛ sababu ye ka stroboscope nɔ yelenw ye. CCR dimming tɛ ni switching events ye, o la yeelen bɔli bɛ to a cogo la. Yɔrɔ minnu bɛ sɔgɔsɔgɔ, CCR de ye sugandili ye min ka fisa ni tɔw bɛɛ ye.
Yala ne bɛ se ka baara kɛ ni PWM dimming ye walasa ka videyo ta wa?
Aw bɛ se, nka aw mago bɛ switching frequency (switching frequency) caman na. Standard pwm drivers bɛ boli 100 Hz ni 400 Hz cɛ, kameraw bɛ minnu ta i n’a fɔ banding. Fɛrɛnkan minnu bɛ tɛmɛ 3000 Hz kan, olu bɛ o fɛnɲɛnɛmaw tigɛ. CCR dimming bɛ gɛlɛya in bali pewu bawo kurunba tɛ wuli abada.
Yala CCR dimming bɛ n ka LED yeelen kulɛri Changer wa?
Awɔ. CCR dimming bɛ kulɛri funteni wuli 200–600K ka sumaya ni 10% dimming ye. CRI fana bɛ jigin ni 5–15 ye. PWM dimming bɛ CCT minɛ ±50K kɔnɔ ani ka CRI sabati. Baara min bɛ kɛ ni kulɛri ye, pwm dimming bɛ i ka yɔrɔ finman lakana dimming range kɔnɔ.
Fɛɛrɛ jumɛn ka dɔgɔn LED bolilaw ma?
PWM bolilaw musaka ka dɔgɔ. Circuit bɛ baara kɛ ni yɔrɔ damadɔw ye ani a mago tɛ funtenibɔlan belebelebaw la. CCR bolibagaw mago bɛ ɲɛnabɔli sinsinni na, tɛmɛsira transistorw, ani funteni lakanani sɛrɛkiliw. O yɔrɔw bɛ musaka ni pankurun yɔrɔ fara ɲɔgɔn kan. Porozɛ minnu bɛ kɛ ni baarakɛnafolo ye, pwm dimming ye pick pratique ye.
Ne bɛ se ka dibi don cogo di ni fɛɛrɛ kelen-kelen bɛɛ ye?
PWM dimming bɛ baara kɛ ka ɲɛ yɔrɔ caman na, hali ni a bɛ 1% baarakɛta jukɔrɔ. CCR dimming bɛ kɛlɛ kɛ 10% dimming duguma, yɔrɔ min na LED baarakɛcogo bɛ kɛ fɛn ye min tɛ se ka fɔ. Ni aw mago bɛ dimi juguman na ni baarakɛcogo sabatilen ye, pwm bolilaw bɛ nɔ ɲumanw di.
Dimming hybride ye mun ye?
Hybride bolibagaw bɛ o fɛɛrɛ fila bɛɛ ɲagami ɲɔgɔn na. CCR bɛ yeelenba minɛ, yɔrɔ min na a bɛ a yɛrɛ tanga flicker ma. PWM bɛ a ta ni yeelen dɔgɔman ye walasa ka dimi hakɛ janya. O fɛɛrɛ bɛ flicker farati dɔgɔya ani ka kulɛriw kɛcogo ɲɛ. Jagokɛlaw ka sofa ICw bɛ sisan hybride schemes jɔ silicon kɔnɔ.
Yala TRIAC dimɛri kɔrɔw bɛ baara kɛ ni o bolifɛntigiw ye wa?
O fɛɛrɛ fila bɛɛ bɛ se ka gɛlɛya sɔrɔ TRIAC dimɛriw la minnu bɛ ɲɛfɛ. Aw bɛ se ka yeli kɛ, ka mankan bɔ, walima ka dɔ bɔ a dibi la. Waritasɛbɛn dimmer compatibility ka sɔrɔ ka sanni kɛ. Dimɛri ni bolifɛntigi min bɛ bɛn ɲɔgɔn ma, o bɛ dimi nɔgɔman di, min bɛ se ka da a kan.
Fɛɛrɛ jumɛn bɛ bɛn furakɛli yeelen ma?
CCR bɛ bɛn furakɛli yɔrɔw ma bawo a tɛ flicker si bɔ. Dɔgɔtɔrɔsow mago bɛ yeelen sabatilen na walasa ka banabagatɔw dusu saalo ani ka baarakɛlaw sinsin. DALI ni 0-10V sitɛmuw bɛ kunnafoni di min tɛ flicker ye. PWM fiyɛli bɛ se ka ɲɛnamini bila o sigidaw la.
