Wamkelekile kwisikhokelo sethu esibanzi sokuhlola iibhodi zeesekethe eziprintiweyo (PCBs) nge-multimeter.Nokuba ungumntu othanda izinto zokuzonwabisa, othanda izinto zombane, okanye ubuchwephesha, ukwazi ukusebenzisa ngokufanelekileyo i-multimeter ukuvavanya ii-PCBs kubalulekile ekuxazululeni iingxaki kunye nokuqinisekisa ukuthembeka kweeprojekthi zakho zombane.Kule bhlog, siza kuchaza inkqubo yenyathelo ngenyathelo yokuhlolwa okucokisekileyo kwePCB usebenzisa i-multimeter, sikunika ulwazi lokukhomba impazamo kwaye wenze ulungiso oluyimfuneko.
Funda ngeePCBs kunye namacandelo azo:
Ngaphambi kokuntywila kwinkqubo, kubalulekile ukuba ube nokuqonda okusisiseko kwePCB kunye namalungu ayo.I-PCB licwecwe elisicaba lezinto ezingaqhubekiyo (ngokuqhelekileyo i-fiberglass) ebonelela ngenkxaso yomatshini kunye noqhagamshelo lombane kumacandelo awohlukeneyo e-elektroniki.Ezi zixhobo, ezifana ne-resistors, i-capacitors, i-diodes, kunye neesekethe ezihlanganisiweyo, zifakwe kwi-PCB zisebenzisa iindlela zokuqhuba ezibizwa ngokuba yi-traces.
Inyathelo 1: Qinisekisa ukuba i-multimeter imiselwe ngokuchanekileyo:
Ukuqalisa ukuhlolwa kwe-PCB, seta i-multimeter kuseto olufanelekileyo.Yitshintshele kwimodi ethi "Ohms" okanye "Ukuchasana", njengoko oku kuya kusivumela ukuba silinganise ukuqhubeka kunye nokuchasana ebhodini.Kwakhona, lungisa uluhlu lokuseta ngokwemilinganiselo elindelekileyo yokuchasa oya kudibana nayo kwiPCB.
Inyathelo 2: Jonga ukuQhuba:
Uvavanyo oluqhubekayo lunceda ekuchongeni intembeko yokulandelela kunye neendawo ezithengiswayo kwi-PCB.Qala ucime amandla kwiPCB.Emva koko, bamba i-multimeter's black and red probes ukuya kwiindawo ezimbini ezahlukeneyo kumkhondo okanye kwi-solder joint.Ukuba i-multimeter ibetha okanye ibonisa ukuchasana kwe-zero, ibonisa ukuqhubeka, ebonisa umkhondo omhle okanye uxhulumaniso.Ukuba akukho beep okanye ukufundwa kokumelana okuphezulu, kukho isiphaluka esivulekileyo okanye uxhulumaniso olubi olufuna ukulungiswa.
Inyathelo 3: Chonga isekethe emfutshane:
Iisekethe ezimfutshane zihlala zingunobangela wokusilela kwePCB.Ukuzichonga, seta i-multimeter yakho kwimodi ye "diode".Chukumisa i-probe emnyama emhlabeni, emva koko uchukumise kancinci iprobe ebomvu ukuya kwiindawo ezahlukeneyo kwi-PCB, ngakumbi kufutshane nee-ICs kunye nezinto ezivelisa ubushushu.Ukuba i-multimeter ifundeka phantsi okanye i-beeps, ibonisa isiphaluka esifutshane esifuna ukuhlolwa nokulungiswa ngakumbi.
Inyathelo lesi-4: Linganisa ukuxhathisa:
Uvavanyo lokuxhathisa lunceda ukumisela imfezeko yabaxhathisi kwi-PCB.Khetha uluhlu olufanelekileyo kwi-multimeter yokulinganisa ukuchasana kwaye uthinte incam yeprobe kuzo zombini iziphelo ze-resistor.I-resistor enempilo kufuneka inikeze ukuchasana ngaphakathi kokunyamezela okuboniswa yikhowudi yombala wayo.Ukuba ufundo lucime kakhulu, i-resistor inokufuna ukutshintshwa.
Inyathelo 5: IiCapacitors zoVavanyo:
I-Capacitors ngamacandelo abalulekileyo ahlala ethanda ukusilela.Ukuqinisekisa ukusebenza kwayo, setha i-multimeter kwimodi ye "capacitance".Ukuchonga ii-terminals ezintle kunye nezibi ze-capacitor kwaye ubeke i-multimeter probes ngokufanelekileyo.I-multimeter iya kubonisa ixabiso le-capacitance, ongayithelekisa kunye ne-capacitance ephawulwe kwicandelo.Amaxabiso ahlukeneyo ahlukeneyo anokubonisa i-capacitor engalunganga.
Ngokulandela la manyathelo angasentla, ungasebenzisa ngokufanelekileyo i-multimeter ukujonga kunye nokuxilonga iingxaki kwi-PCB.Khumbula ukuba umonde kunye nokugxila kubalulekile ngeli xesha lokuqinisekisa iziphumo ezichanekileyo kwaye ugweme umonakalo ongakumbi.Ngokuchonga iziphene ngokuchanekileyo, unokuqalisa ukulungisa ngokuzithemba, uququzelele iiprojekthi eziyimpumelelo ze-elektroniki kunye nokuphucula izakhono zakho zokusombulula ingxaki.Uvavanyo olonwabileyo kunye nokulungiswa!
Ixesha lokuposa: Jul-31-2023