Tlhokomelo ea phepelo ea motlakase ea skrineng sa LED e ka aroloa ka mehato e 'meli

(1) Ha motlakase o tima, 'sheba, fofonela, botsa, lekanya'

Sheba: Bula khetla ea phepelo ea motlakase, hlahloba hore na fuse e butsoe, ebe u sheba boemo ba ka hare ba motlakase.Haeba ho na le libaka tse chesitsoeng kapa likarolo tse robehileng ho boto ea PCB ea phepelo ea motlakase, ho tsepamisoa maikutlo e lokela ho ba ho hlahloba likarolo le likarolo tse amanang le potoloho mona.

Monko: Ho fofonela haeba ho na le monko o tukang ka har'a phepelo ea motlakase 'me u hlahlobe hore na ho na le likarolo tse cheleng.

P: Ke kopa ho botsa ka ts'ebetso ea tšenyo ea phepelo ea motlakase le hore na ho na le ts'ebetso e seng molaong e entsoeng phepelong ea motlakase.

Lekanya: Pele o kenya motlakase, sebelisa multimeter ho lekanya motlakase lintlheng tse peli tsa capacitor ea high-voltage.Haeba phoso e bakoa ke ho hlōleha ha matla a skrine ea pontšo ea LED kapa potoloho e bulehileng ea tube ea switjha, maemong a mangata, motlakase o ka mahlakoreng ka bobeli a capacitor e phahameng ea motlakase ha o so ka o lokolloa, o fetang 300 volts.Ela hloko.Sebelisa multimeter ho lekanya khanyetso ea pele le ka morao lipheletsong tse peli tsa mohala oa motlakase oa AC le boemo ba ho tjhaja ba capacitor.Boleng ba ho hanyetsa ha boa lokela ho ba tlase haholo, ho seng joalo ho ka 'na ha e-ba le potoloho e khutšoanyane ka hare ho matla a matla.Li-capacitor li lokela ho khona ho tjhaja le ho lokolla.Hakolla mojaro 'me u lekanye khanyetso ea fatše ea sehlopha ka seng sa li-terminals tsa tlhahiso.Ka tloaelo, nale ea mitha e lokela ho ba le ho tjhaja ha capacitor le ho ntša oscillation, 'me pontšo ea ho qetela e lokela ho ba boleng ba ho hanyetsa ho hanyetsa ha potoloho ea potoloho.

(2) Matla a ho lemoha

Kamora ho bulela, hlokomela hore na phepelo ea motlakase e chesitse li- fuse le likarolo tse ling li ntša mosi.Haeba ho joalo, khaola phepelo ea motlakase ka nako e loketseng bakeng sa tlhokomelo.

Lekanya hore na ho na le tlhahiso ea 300V lipheletsong tse peli tsa capacitor e phahameng ea motlakase.Haeba ho se joalo, shebana le ho hlahloba diode ea rectifier, filter capacitor, joalo-joalo.

Lekanya hore na coil ea bobeli ea transformer e phahameng-frequency e na le tlhahiso.Haeba ho se na tlhahiso, tsepamisa maikutlo ho hlahloba hore na tube ea switjha e senyehile, hore na e thothomela, le hore na potoloho ea tšireletso e sebetsa.Haeba ho na le, tsepamisa maikutlo ho hlahloba diode ea rectifier, filter capacitor, li-tube tsa regulator tse tharo, joalo-joalo lehlakoreng le leng le le leng la tlhahiso.

Haeba motlakase o qala mme o emisa hang-hang, o sebakeng se sirelelitsoeng.Matla a pini ea ts'ireletso ea chip ea PWM a ka lekanyetsoa ka kotloloho.Haeba motlakase o feta boleng bo boletsoeng, e bontša hore motlakase o sebakeng se sirelelitsoeng, 'me lebaka la tšireletso le lokela ho hlahlojoa ka hloko.


Nako ea poso: Aug-08-2023
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