Sofɛrɛ ka ciriw suguyaw n’u ɲɔgɔndan

Walasa ka bolifɛn sugandi LED lanpan kama ani, don nataw la, k’a sigi ka ɲɛ, i ka kan k’i yɛrɛ dɔn ja ni paramɛtiriw wajibiyalenw na. Minɛn min sugandira ka ɲɛ, o tɛna dɔrɔn ka fɛn dilannen si janya, nka a bɛna wari fana bɔ i la.

LED lanpan minɛn

Diode lanpan modɛliw y’a daminɛ ka bila standard taw nɔ na. U sɔngɔ ka gɛlɛn, nka u ka fɛɛrɛbɔlanw ka fisa kosɛbɛ ni modɛli kɔrɔlenw ye. Walasa k’u baara kɛcogo faamuya, aw ka kan ka LED lanpan minɛn dɔn.
A bɛ Kɛ ni fɛn 5 ye minnu bɛ Jὲ cogo kelen na:

• Plinth –  fɛn min bɛ siri chandelier walima lanpan wɛrɛ socket kɔnɔ. A bɔra ka ɲɛsin:
  • sokɔnɔ baarakɛcogo buruju suguya E27 ani E14, min dilannen don ni nɛgɛ ye ni nikɛri ye min bɛ sɔgɔ;
  • mago wɛrɛw kama, yeelenbɔlanw bɛ dilan ni pini basigilen ye.
• Sofɛrɛ  – fɛn min bɛ tension natɔ sabati ani ka kuran wulilen caman Changer ka kɛ direct ye. A fana bɛ fanga Di LED ma. A bɛ Kɛ yɔrɔ 3 ye:
  • mikropucew;
  • pulse transformateur (pulse transformateur) ;
  • kondansɛriw.

• Heatsink ye fɛn ye min bɛ funteni bɔ ani ka LEDw ka funteni ɲuman di u ma walasa u ka baara kɛ. A ka c’a la, a bɛ kɛ farikolo yɔrɔ yelen ye.
• Difiyɛri ye  “cap” ye min bɛ yeelen bɔ, min bɛ dɛmɛ don ka yeelen tila-tila sankolo la. A bɛ Kɛ ‘yɔrɔ-yɔrɔ-yɔrɔ cogo la walasa ka yeelenbɔlanw jɛnsɛn kùnkolo-yɔrɔba la. Fɛn min bɛ kɛ, o ye polikarbonati walima plastiki ye. A bɛ buguri ni ji bali ka don so kɔnɔ. Walasa ka yeelen nɔgɔya ani ka dɔ bɔ ɲɛw dimi nɔ na, ​​o fɛn in bɛ da ni fosiporozɛni ye ka bɔ a kɔnɔ. O bɛ kulɛri funteni Sɔrɔ min ni yeelen nafama bɛ Taa ɲɔgɔn fɛ.
• LEDw ye lanpan ka baarakɛyɔrɔba ye, o sababu la, yeelen dɔ bɛ bɔ. Puce lajɛlen fɛɛrɛba 4 bɛ yen:
  • SMD fɛɛrɛ de ka ca don o don ɲɛnamaya kɔnɔ. Kristali bɛ bila yeelenminɛn in sanfɛ;
  • DIP – yeelenfɛn dɔ bɛ Kɛ ni kristalɛ barikama 1 ye, lensɛri dɔ bɛ siri min sanfɛ;
  • Piranha – mobili baarakɛlaw ka kanulenw, ɲɔgɔnye 4 bɛ yen ;
  • COB fɛɛrɛ ye LED puce ɲɔgɔndan fɛɛrɛ kɔrɔlen ye, o ye sugandi ye min lakananen don kosɛbɛ ka bɔ funteni ni oksidan na.

Fɛn minnu sɔngɔ man gɛlɛn, a bɛ se ka kɛ ko bolifɛn tɛ yen, o nɔ na, ​​kuran dɔ bɛ sigi sen kan, o min tɛ kuran ni tension sabatili di.

Bololabaarakɛlaw ka ciriw suguya caman ani u cogoyaw

Dilanbagaw bɛ bolifɛnw dilan kɛrɛnkɛrɛnnenya la circuits intégrés (IC) kan minnu b’a to i bɛ se ka kuran sɔrɔ ka bɔ tension dɔgɔman na. LED yeelenbɔlanw bɛɛ lajɛlen minnu bɛ yen sisan, olu tilalen don ninnu na:

• dabɔra ka da transistor 1÷3 kan – nɔgɔman ;
• ni puce ni PWM – complexe ye.

Standard LED driver wiring diagram:
Ni aw bɛ ɲɔgɔn don kuran na ani LED hakɛ min bɛ a kɔnɔ, o bɛ nɔ bila bɔli wulicogo la. Bololabaarakɛla ka kan ka kuran hakɛ min Bɔ k’a ɲɛsin a ma, o bɛ Bɔ u ka fiɲɛbɔlan fanga bɛɛ lajɛlen na ani u ka kɛnɛya la. Se bɛ se ka jate ni nin formula in ye: P = P(led) × n, yɔrɔ min na:

• P(led) ye fɛn kelen ka seko ye;
• n ye LED fɛnw hakɛ ye.

Fɛn nafamaw:

• Direct rated current ye LED suguya bɛɛ ka paramɛtiri jɔnjɔn ye. Ni an b’a dɔgɔya, an bɛ bɔnɛ a yeelen na, ani n’an y’a jate kojugu, an bɛ dɔ bɔ kosɛbɛ baarakɛwaati la.
• Voltage min bɛ di datasheet kɔnɔ LED ma, o tɛ ko latigɛlen ye wa a bɛ volt hakɛ min bɛna jigin pn junction la dɔrɔn de jira ni current rated bɛ woyo. A kɔrɔ ka kan ka dɔn.
• Walasa ka LED minnu fanga ka bon, olu siri ɲɔgɔn na, nɛnɛbɔlan min ka ɲi kosɛbɛ, o nafa ka bon. Ni aw bɛ LEDw sigi minnu fanga bɛ tɛmɛ 0,5 W kan radiyatɛri kan, baara kuntaalajan sabatilen bɛna taa ɲɛ.

LEDw sirili sofɛrɛ la:

Aw ye aw jija ka jateminɛ kɛ feerekɛla ka kulɛri hakɛ la ni aw bɛ jatebɔ kɛ, barisa o bɛ nɔ bila tension jigin na.

Ka kɛɲɛ ni bolifɛntigi ka jogoɲumanya ye, u bɛ tila suguya 3 ye:

• a ka dɔgɔ, a bɛ baara kɛ fo lɛri ba 20;
• ni paramɛtɛrɛw cɛmancɛ – fo ka se sanga ba 50 ma ;
• convertisseur, min bɛ kɛ ni fɛnw ye minnu bɛ sɔrɔ fɛn dɔntaw la – sanga ba 70 ani ka tɛmɛ o kan.

Ni kondensatɛriw ye walasa ka tension dɔgɔya

Condensateur C1 bɛ mɔgɔ tanga rezow ka fɛnw tiɲɛni ma, ani C4 bɛ ripplew nɔgɔya. Kuran bɛ Kɛ waati min na, rezisti 2 – R2 ani R3 – bɛ dan Kɛ a la ani o waati kelen na k’a Lakana ka Bɔ ‘sèn na, wa VD1 fɛn in bɛ ‘voltage alternatif ‘kɔnɔna Yɛlɛma. Ni kurunbokari jɔra, kondansɛri bɛ bɔ ni rezisti R4 dɛmɛ ye. R2, R3 ani R4 tɛ baara kɛ ni u dilannikɛlaw bɛɛ ye.
Minusw: 1 .

1. Diode burnout , bawo sisan sɔrɔcogo sabatili tɛ kɔlɔsi. A doni girinya bɛ bɔ pewu fɛnw dilancogo la.
2. No galvanic isolation , kuran sɔgɔli farati bɛ yen. A man ɲi ka maga fɛnw na minnu bɛ kuran ta, lanpanw tigɛtuma na, barisa u bɛ fasa kɔrɔ.
3. A bɛ Se ka Kɛ kosɛbɛ ka glow currents (kɛnɛya) caman Sɔrɔ , bari o bɛna Kɛ sababu ye ka dɔ Fàra kondensatɛriw ka capacitances (kapaɲiw) kan.

Ni impulsion sofɛrɛ ye

A bɛ mɔgɔ tanga fanga wulicogo ma ani fɛn minnu bɛ se ka don rezow kɔnɔ. Misali dɔ ye CPC9909 modɛli ye. Nafa sɔrɔli bɛ se 98% ma – taamasiyɛn min na mɔgɔ bɛ se ka kuma tiɲɛ na fanga marali ni a marali kan.
Minɛn in bɛ se ka baara kɛ ka ɲɛ ka bɔ tensionba la – fo ka se 550 V ma, bawo a bolibaga bɛ ni stabilisateur ye min bɛ a kɔnɔ.Sɛrɛkili in kɛra nɔgɔya ye, wa a musaka fana ka dɔgɔ.

Microcircuit bɛ baara kɛ ka ɲɛ walasa ka kɛnɛyako ni kɔkanna yeelen fanga rezow yiriwali, bawo a bɛnnen don boost converter circuits ma.

So kɔnɔ, ka da CPC9909 kan, lanpan minnu bɛ baara kɛ ni batiri ye walima bolifɛn minnu fanga tɛ tɛmɛ 25 V kan, olu de bɛ lajɛ tuma caman na.Switching bolifɛnw bɛ ni donna tension hakɛ caman ye. Misali la, MAX16833 puce ka donna-yɔrɔ bɛ se 5 fo 65 V ma, ka sɔrɔ MAX16822 bɛ se ka wuli ka bɔ 6,5 fo 65 V. Puce dɔw b’a to i bɛ se ka fɛn caman tigɛli hakɛ sigi ka bɔ 20 kHz la ka se 2 MHz ma. MAX16801 ani MAX16802 LED bolifɛnw ɲɛminɛbagaw b’a to i bɛ se ka DC/DC sɛgɛsɛgɛlikɛlan dɔ dilan min bɛ se ka bɔli kuran 10A.MAX16807, MAX16809, MAX16838, ani MAX16814 LED bolifɛnw bɛ 1:5000 bɔli kuran ladilancogo di. Switching LED drivers fanba b’a to i bɛ se ka circuit topology sugandi min ka fisa kosɛbɛ walasa ka baara kɛcogo ɲuman sɔrɔ.

Ni dimmable sofɛrɛ ye

Dimmer bɛ kɛ ka lanpan fanga Changer ka ɲɛ. Paramɛtɛrɛba dɔ ye fanga ye. Lanpan hakɛ min bɛ se ka don a la, o bɛ bɔ fanga de la. Ni i ye yeelenbɔlanw yeelen ladilan, o b’a to i bɛ se ka yeelen hakɛ min ɲinina so kɔnɔ, o sigi. A bɛ mɔgɔ lafiya:

• ni zone danfaralenw bɛ dabɔ;
• ka dɔ bɔ yeelen yeelen na tile fɛ;
• ka kɔnɔnafɛnw jira.

U bɛ tila kuluw ye ka kɛɲɛ ni kɔrɔsili suguya ye:

• masinw ka baarakɛcogo;
• butɔni-butɔni;
• samanen.

Dimɛ dɔ dɛmɛni fɛ, kuran baara bɛ kɛ hakilitigiya ye, wa kuran minɛn ka baarakɛ waati bɛ bonya.

A suguya 2 de bɛ yen:

• Ni PWM kunkanko ye. U bɛ sigi lanpan ni kuran dilanyɔrɔ cɛ. Fanga bɛ dilan ni pulsiw ye minnu kuntaala tɛ kelen ye.
• 2nan filɛli. U bɛ Kɛ minɛnw ye minnu ka kuran sabatilen don ani u bɛ nɔ Blà fanga sɔrɔyɔrɔ yɛrɛ la.

e14 lanpan LED min bɛ se ka fiyen, o bɛnnen don kosɛbɛ ka otomatiki sitɛmuw dafa. Aw bɛ se ka yeelenbɔlan ka baarakɛcogo kunbɛn. U bɛ ɲini kosɛbɛ feerekɛlaw fɛ. 14 ye lanpan basigilen cɛmancɛ ye, min bɛ jira milimɛtɛrɛw la. Bi, o anpuluw bɛ sɔrɔ cogoya caman na:

• balɔn;
• jiginɛ dɔ;
• kandili;
• fiyenan.

Sofɛrɛ ɲɔgɔndan ja min bɛ LEDw kan

Jɛɲɔgɔnya suguya 3 bɛ yen, an ka misali dɔ lajɛ ni kunmabɔnafolo 6 ye. U ka tension bɔnɛ ye 3 V ye, sisan ta ye 300 mA ye:

• fasaman;
• kuntilenna kelen;
• tugu-tugu ɲɔgɔn kɔ ni 2 ye.

Fɛɛrɛ suguya kunbabaw:

• Microchip basigilen. PT4115 bɛ ni pinɛ danfaralen ye walasa ka LEDw dacogo ni u fagacogo kɔlɔsi. Ni aw bɛ baara kɛ ni nin pinɛ in ye, aw bɛ se ka LED sofɛrɛ sɔrɔ nɔgɔya la min bɛ se ka dimi. Sofɛrɛ min bɛ se ka dimi, o bɛ sɔrɔ ni seko ni dɔnko hakɛ caman cili ye DIM pin la (sofɛrɛ baarakɛcogo basigilen), walima ni baarakɛcogo ɲininen ka wulikan taamasiɲɛ dɔ ye a kan (pulse mode avec un effet stroboscopique). O laban in na, a ka segin-ka-bɔnye hakɛ min bɛ Se ka Kɛ, o ye 50 kHz ye.
• LEDw dabɔli nɔgɔya la, ni kondensatɛri dɔ bɛ DIM pin ni dugukolo cɛ. Waati min bɛ se ka yeelenba sɔrɔ, o bɛna bɔ kondansɛri ka seko la, n’a ka bon, lanpan bɛna mɛn ka mɛn, o cogo kelen na.
• Ni dimmer tension constant ye. A bɛ baara Kɛ k’a sababu Kɛ ko mikrocircuit kɔnɔ DIM pin bɛ “sama ka Taa san fɛ” ka Taa 5 V bus la 200 kΩ resistor fɛ. Ni potentiomètre slider bɛ a jɔyɔrɔba la, voltage divider 200 + 200 kΩ bɛ dilan ani potentiel 5/2 = 2,5 V bɛ dilan DIM pin la, o bɛ bɛn 100% yeelen ma.
• Ni galvanique isolation tɛ . A ka nɔgɔn ani a bɛ se ka da a kan. O tila-tilacogo bɛ Da capacitance (kapaɲi) kan. Elektrolitiki kondansɛri bɛ wuluwuluw nɔgɔya u latilenni kɔfɛ. L7812 ye stabilisateur yɛrɛ ye.

Bololabaarakɛlaw dabɔra walasa ka kuran wulicogo bɛɛ nɔgɔya kuran sira dɔ kɔnɔ. U ka sugandili walima u yɛrɛ lajɛli ka kan ka gɛrɛ ni jateminɛ ye ani dɔrɔn jatebɔ kɛlen kɔfɛ dɔrɔn paramɛtɛrɛ wajibiyalenw bɛɛ lajɛlen kɔfɛ. Sofɛrɛw ka fɛɛrɛw bɛna i dɛmɛ ka minɛn ɲuman sugandi ani k’a sigi ka ɲɛ.