The PCB board ndiye msana wa chipangizo chilichonse chamagetsi, nsanja yomwe zida zamagetsi zimayikidwa. Komabe, ngakhale kufunikira kwawo, matabwawa satetezedwa ku kulephera kapena zolakwika. Ichi ndichifukwa chake ndikofunikira kuphunzira momwe mungayesere bwino ma board a PCB ndi multimeter. Mu blog iyi, tiwona njira yoyesera ya PCB board kuti iwonetsetse kuti ikugwira ntchito bwino ndikuzindikira zovuta zomwe zingachitike.
Dziwani zambiri za ma multimeter:
Musanadumphire pakuyesa, ndikofunikira kudziwa zida zomwe tidzagwiritse ntchito - ma multimeter. Multimeter ndi chida chamagetsi chomwe chimayesa magawo osiyanasiyana amagetsi monga ma voltage, apano, ndi kupitiliza. Zili ndi zigawo zosiyanasiyana kuphatikizapo chiwonetsero, kuyimba kosankhidwa, madoko ndi ma probes.
1: Konzekerani mayeso
Yambani ndikupeza multimeter yomwe ikugwira ntchito ndikuzidziwa bwino ntchito zake ndi makonda ake. Onetsetsani kuti bolodi la PCB lachotsedwa ku gwero lililonse lamagetsi kuti mupewe kuwonongeka kapena kuvulala. Dziwani mfundo zosiyanasiyana zomwe mungayese pa bolodi ndikuwonetsetsa kuti ndi zofikirika.
Khwerero 2: Yesani Voltage
Kuti muyese voteji pa bolodi la PCB, chonde ikani ma multimeter kukhala voteji ndikusankha mtundu woyenera malinga ndi voteji yomwe ikuyembekezeka. Lumikizani kafukufuku wakuda ku doko wamba (COM) ndi kafukufuku wofiyira ku doko la voltage (V). Gwirani kafukufuku wofiyira ku terminal yabwino ya PCB ndi kafukufuku wakuda mpaka pansi kuti muyambe kuyesa magetsi. Zindikirani kuwerenga ndikubwereza ndondomeko ya mfundo zina zofunika pa bolodi.
Gawo 3: Kupitiliza Kuyesa
Kuyesa kopitilira ndikofunikira kuti muwonetsetse kuti palibe zotsegula kapena zazifupi zomwe zilipo pa PCB. Khazikitsani ma multimeter kuti apitilizebe potembenuza chosankha choyimba moyenerera. Lumikizani kafukufuku wakuda ku doko la COM ndi kafukufuku wofiyira ku doko lodzipereka lopitilira pa multimeter. Gwirani ma probe pamodzi ndipo onetsetsani kuti mwamva beep kuti mutsimikizire kupitiliza. Kenako, gwirani kafukufukuyo mpaka pomwe mukufuna pa PCB ndikumvera beep. Ngati palibe phokoso, pali dera lotseguka, losonyeza kuti pali kugwirizana kolakwika.
Khwerero 4: Yesani Kukaniza
Kuyesa koyesa kumathandizira kuzindikira zolakwika zilizonse kapena kuwonongeka kwa magawo ozungulira pa bolodi la PCB. Khazikitsani ma multimeter kuti mukanize (chilembo chachi Greek omega chizindikiro). Lumikizani kafukufuku wakuda ku doko la COM ndi kafukufuku wofiira ku doko lotsutsa. Gwirani ma probes palimodzi ndikuwona momwe kukana kuwerengera. Kenako, gwirani ma probe ku mfundo zosiyanasiyana pa bolodi ndikuyerekeza zowerengerazo. Ngati kuwerengako kumapatuka kwambiri kapena kuwonetsa kukana kopanda malire, zikuwonetsa vuto lomwe lingakhalepo ndi dera la PCB.
Kuyesa bolodi la PCB ndi multimeter ndi gawo lofunikira pakuwonetsetsa kuti likugwira ntchito komanso kudalirika. Potsatira ndondomeko ya sitepe ndi sitepe yomwe yafotokozedwa mu bukhuli, mukhoza kuyesa bwino mphamvu yamagetsi, kupitiriza, ndi kukana pa bolodi la dera. Kumbukirani kuti ma multimeter ndi chida chogwiritsa ntchito zambiri, ndipo kumvetsetsa ntchito yake ndikofunikira pakuyesa molondola. Okhala ndi luso limeneli, mukhoza molimba mtima mavuto ndi kukonza zofunika kuonetsetsa ntchito momwe akadakwanitsira wanu PCB bolodi.
Nthawi yotumiza: Sep-06-2023