Rea u amohela ho tataiso ea rona e felletseng ea ho hlahloba liboto tsa potoloho tse hatisitsoeng (PCBs) ka multimeter.Hore na o motho ea ratang ho itlosa bolutu, motho ea chesehelang lisebelisoa tsa elektroniki, kapa setsebi, ho tseba ho sebelisa multimeter ka nepo ho lekola li-PCB ho bohlokoa ho rarolla mathata le ho netefatsa ts'epo ea merero ea hau ea elektroniki.Ho blog ena, re tla qaqisa mehato ea mohato ka mohato bakeng sa tlhahlobo e phethahetseng ea PCB re sebelisa multimeter, ho u fa tsebo ea ho supa phoso le ho etsa litokiso tse hlokahalang.
Ithute ka li-PCB le likarolo tsa tsona:
Pele o kenella ts'ebetsong, ho bohlokoa ho ba le kutloisiso ea mantlha ea PCB le likarolo tsa eona.PCB ke letlapa le bataletseng la thepa e sa sebetseng (hangata fiberglass) e fanang ka tšehetso ea mochini le likhokahano tsa motlakase bakeng sa likarolo tse fapaneng tsa elektroniki.Likarolo tsena, joalo ka li-resistors, li-capacitor, diode, le li-circuits tse kopaneng, li kentsoe ho PCB ho sebelisoa litselana tsa conductive tse bitsoang traces.
Mohato oa 1: Etsa bonnete ba hore multimeter e hlophisitsoe ka nepo:
Ho qala tlhahlobo ea PCB, seta multimeter ho li-setting tse nepahetseng.E fetole ho "Ohms" kapa "Resistance" mode, kaha sena se tla re lumella ho lekanya tsoelo-pele le ho hanyetsa boto.Hape, fetola maemo a marang-rang ho latela litekanyetso tse lebelletsoeng tsa khanyetso tseo u tla kopana le tsona ho PCB.
Mohato oa 2: Hlahloba Tsoelopele:
Teko ea ho tsoela pele e thusa ho tseba botšepehi ba mesaletsa le manonyeletso a solder ho PCB.Pele tima matla ho PCB.Ka mor'a moo, ama "multimeter" e ntšo le e khubelu ho ea lintlheng tse peli tse fapaneng holim'a motsoako oa trace kapa solder.Haeba multimeter e lla kapa e bontša ho hanyetsa zero, e bontša tsoelo-pele, e bontšang mokhoa o motle kapa khokahanyo.Haeba ho se na beep kapa palo e phahameng ea khanyetso, ho na le potoloho e bulehileng kapa khokahanyo e mpe e lokelang ho lokisoa.
Mohato oa 3: Khetholla potoloho e khuts'oane:
Lipotoloho tse khutšoane hangata ke tsona tse bakang ho hloleha ha PCB.Ho li tseba, beha multimeter ea hau ho "diode" mode.Tobetsa sets'oants'o se setšo fatše, ebe u thetsa hanyenyane phuputso e khubelu ho ea libakeng tse fapaneng ho PCB, haholo haufi le li-IC le likarolo tse hlahisang mocheso.Haeba multimeter e bala ka tlaase kapa e beps, e bontša potoloho e khutšoanyane e hlokang ho hlahlojoa le ho lokisoa ho eketsehileng.
Mohato oa 4: Lekanya Khanyetso:
Teko ea Resistance e thusa ho tseba botšepehi ba bahanyetsi ho PCB.Khetha sebaka se loketseng ho multimeter bakeng sa tekanyo ea khanyetso ebe u ama ntlha ea probe lipheletsong tse peli tsa sehanyetsi.Mohanyetsi ea phetseng hantle o lokela ho fana ka khanyetso ka har'a mamello e bontšitsoeng ke khoutu ea 'mala oa eona.Haeba lipalo li fokotsehile haholo, ho ka 'na ha hlokahala hore mochine o hanyetsang o nkeloe sebaka.
Mohato oa 5: Li-Capacitor tsa Teko:
Li-capacitor ke likarolo tsa bohlokoa tseo hangata li atisang ho hlōleha.Ho netefatsa ts'ebetso ea eona, beha multimeter ho "capacitance" mode.Hlalosa li-terminals tse ntle le tse mpe tsa capacitor 'me u behe li-multimeter probes ho latela.Multimeter e tla bonts'a boleng ba capacitance, eo u ka e bapisang le bokhoni bo tšoailoeng karolong.Maemo a fapaneng haholo a ka bonts'a capacitor e fosahetseng.
Ka ho latela mehato e ka holimo, u ka sebelisa multimeter ka katleho ho hlahloba le ho hlahloba mathata a PCB.Hopola hore mamello le ho tsepamisa maikutlo ke tsa bohlokoa nakong ea ts'ebetso ena ho netefatsa liphetho tse nepahetseng le ho qoba tšenyo e eketsehileng.Ka ho tseba liphoso ka nepo, o ka qala ho lokisa ka boitšepo, oa tsamaisa merero e atlehileng ea lisebelisoa tsa elektroniki le ho ntlafatsa tsebo ea hau ea ho rarolla mathata.Thabela teko le ho lokisa!
Nako ea poso: Jul-31-2023