Kev ua yuam kev thiab kev ua tsis tiav yog qhov tseeb ntawm lub neej. Cov ntawv luam tawm Circuit Boards qee zaum nkoj nrog kev tsim khoom tsis xws luag, cov khoom siv tuaj yeem rov qab los yog nyob rau hauv qhov tsis ncaj ncees lawm, thiab cov khoom tsis zoo. Tag nrho cov ntsiab lus tsis ua hauj lwm no ua rau lub voj voog ua haujlwm tsis zoo lossis tsis zoo.
YPCB Troubleshooting
Printed circuit boards, los yog PCBs, yog ib pawg ntawm cov insulators thiab tooj liab kab uas txuas densely packed Cheebtsam los tsim ib tug niaj hnub Circuit Court. Kev daws teeb meem PCBs feem ntau yog ib qho kev sib tw, nrog rau tej yam xws li qhov loj me, tus naj npawb ntawm cov khaubncaws sab nraud povtseg, kev tsom xam cov teeb liab, thiab hom ntawm cov khoom ua si lub luag haujlwm loj.
Qee lub rooj tsav xwm nyuaj xav tau cov cuab yeej tshwj xeeb los daws teeb meem kom raug. Txawm li cas los xij, kev daws teeb meem feem ntau tuaj yeem ua tiav nrog cov khoom siv hluav taws xob yooj yim los ua raws li cov cim, tam sim no, thiab cov teeb liab los ntawm Circuit Court.
kab hauv qab
Kev daws teeb meem PCB feem ntau tsuas yog siv ob peb yam cuab yeej xwb. Cov cuab yeej siv ntau yam yog multimeter. Txawm li cas los xij, nyob ntawm qhov nyuaj ntawm PCB thiab qhov teeb meem, ib qho LCR meter, oscilloscope, fais fab mov, thiab logic analyzer kuj tseem yuav xav tau los khawb tob rau hauv kev ua haujlwm ntawm lub voj voog.
Ua Kev Tshawb Fawb Pom
Pom pom kev tshuaj xyuas PCBs pom cov teeb meem pom tseeb ntxiv nrog rau cov kab sib tshooj, hlawv tawm cov khoom, cov cim qhia ntawm overheating, thiab cov khoom ploj lawm. Qee cov khoom siv hluav taws kub hnyiab, puas los ntawm cov tam sim no ntau dhau, tsis tuaj yeem pom tau yooj yim, tab sis kev tshuaj xyuas qhov muag pom lossis tsis hnov tsw tuaj yeem qhia tias muaj cov khoom puas. Bulging Cheebtsam yog lwm qhov taw qhia zoo ntawm qhov teeb meem, tshwj xeeb tshaj yog rau electrolytic capacitors.
Ua Kev Tshuaj Xyuas Lub Cev
Ib kauj ruam dhau qhov kev tshuaj xyuas qhov muag yog kev tshuaj xyuas lub cev nrog lub zog siv rau hauv Circuit Court. Los ntawm kov lub npoo ntawm PCB thiab cov khoom ntawm lub rooj tsavxwm, koj tuaj yeem ntes cov chaw kub yam tsis tas siv lub koob yees duab kim kim. Thaum kuaj pom cov khoom kub, txias nws nrog cov cua hauv cov kaus poom los ntsuas kev ua haujlwm hauv Circuit Court nrog cov khoom ntawm qhov kub thiab txias.
Cov txheej txheem no muaj peev xwm txaus ntshai thiab yuav tsum tsuas yog siv rau ntawm cov hluav taws xob tsis tshua muaj hluav taws xob nrog kev ceev faj txog kev nyab xeeb.
Thaum koj kov lub zog hluav taws xob, ua ntau yam ceev faj. Xyuas kom tseeb tias tsuas yog ib txhais tes ua rau kev sib cuag nrog lub voj voog txhua lub sijhawm kom tsis txhob muaj hluav taws xob ua rau tuag taus los ntawm kev hla koj lub plawv. Yog tias ua tau, khaws ib txhais tes rau hauv koj lub hnab tshos yog ib qho txheej txheem zoo thaum ua haujlwm ntawm cov kab hluav taws xob nyob kom tsis txhob muaj kev poob siab. Xyuas kom txhua txoj hauv kev tam sim no mus rau hauv av, xws li koj ob txhais taw lossis lub pluaj tsis muaj zog hauv av, raug txiav kom txo qis kev txaus ntshai ntawm kev poob siab.
Kov ntau qhov chaw ntawm lub Circuit Court kuj hloov qhov impedance ntawm lub Circuit Court, uas tuaj yeem hloov tus cwj pwm ntawm lub cev thiab yog li txheeb xyuas qhov chaw nyob hauv Circuit Court uas xav tau ntxiv capacitance ua haujlwm kom raug.
Kev ntsuas qhov ntsuas tsis sib xws
Kev ntsuas txhua tus neeg feem ntau yog cov txheej txheem zoo tshaj plaws rau kev daws teeb meem PCB. Ntsuas txhua qhov resistor, capacitor, diode, transistor, inductor, MOSFET, LED, thiab cov khoom siv sib cais nrog lub ntsuas ntsuas los yog LCR. Yog hais tias cov khoom sau npe tsawg dua los yog sib npaug rau cov nqi teev tseg, cov khoom feem ntau yog qhov zoo. Yog tias tus nqi tivthaiv siab dua, nws yog qhov qhia tau tias cov khoom siv tsis zoo lossis cov khoom sib txuas tsis zoo.
Tshawb xyuas diodes thiab transistors siv lub diode kuaj hom ntawm multimeter. Lub hauv paus-emitter thiab base-collector junctions ntawm ib tug transistor yuav tsum coj zoo li discrete diodes thiab coj nyob rau hauv ib tug kev taw qhia tsuas yog nrog tib voltage poob. Nodal tsom xam yog lwm qhov kev xaiv uas tso cai rau kev sim tsis muaj zog ntawm cov khoom siv los ntawm kev siv lub zog rau ib qho kev tivthaiv thiab ntsuas nws qhov voltage-tiv thaiv-tam sim no (V / I) cov lus teb.
ICs Test
Cov khoom nyuaj tshaj plaws los kuaj xyuas yog ICs. Feem ntau tuaj yeem txheeb xyuas tau yooj yim los ntawm cov cim, thiab ntau tus tuaj yeem ua haujlwm sim siv oscilloscopes thiab logic analyzers. Txawm li cas los xij, tus naj npawb ntawm ICs tshwj xeeb hauv ntau qhov kev teeb tsa thiab PCB tsim tuaj yeem ua rau kev sim nyuaj. Sib piv tus cwj pwm ntawm ib lub voj voog mus rau ib qho kev paub zoo Circuit Court feem ntau yog cov txheej txheem muaj txiaj ntsig thiab yuav tsum pab tus cwj pwm tsis zoo sawv tawm.
