Muaj pes tsawg koj puas paub rau 9 cov kev nkag siab ntawm PCB board cov ntawv pov thawj? Cov qhov tshwj xeeb suav nrog cov kev nkag siab zoo li hauv qab no, thiab cov lus hais tshwj xeeb yuav tsum to taub nrog PCB board proofing manufacturers.
1. Ua zoo mloog ntawm kev ua haujlwm rwb thaiv tsev ntawm cov hlau soldering thaum kuaj PCB pawg thawj coj saib
Nws tsis raug tso cai los siv lub ntsej muag kub taub hau thaum nws nyob. Yuav kom paub tseeb tias cov hlau soldering tsis nyob, nws yog qhov zoo dua rau hauv av lub plhaub ntawm cov hlau soldering. Xyuam xim nrog MOS Circuit Court. Nws muaj kev nyab xeeb dua yog siv hluav taws xob hluav taws xob tsawg voltage ntawm 6 ~ 8V.
2. Ua ntej kuaj PCB lub rooj tsavxwm, nkag siab lub ntsiab cai ua haujlwm ntawm kev sib xyaw thiab ib ncig
Ua ntej tshuaj xyuas thiab kho cov pa hluav taws xob sib xyaw, koj yuav tsum xub paub txog txoj haujlwm ntawm kev sib koom ua ke siv, Circuit Court sab hauv, cov hluav taws xob tseem ceeb, lub luag hauj lwm ntawm txhua tus pin, thiab qhov hluav taws xob li qub ntawm tus pin, kev tawm suab thiab kev ua haujlwm lub hauv paus ntsiab lus ntawm Circuit Court muaj peripheral Cheebtsam. Yog tias cov xwm txheej saum toj no tau ntsib, tshuaj ntsuam thiab tshuaj xyuas yuav yooj yim dua.
3. Nws yog nruj me ntsis txwv tsis pub siv cov cuab yeej kuaj ntsuas nyob hauv av los kov lub TV nyob, audio, video thiab lwm yam khoom siv ntawm cov phaj hauv qab txhawm rau txhawm rau kuaj PCB pawg thawj coj saib tsis muaj kev hloov pauv
Nws yog nruj me ntsis txwv tsis pub ntsuas ncaj qha rau TV, audio, video thiab lwm yam khoom siv yam tsis muaj lub zog hluav taws xob tsis raug hloov pauv nrog cov khoom siv nrog lub plhaub av. Txawm hais tias cov xov tooj cua mloog xov tooj cua muaj lub zog hloov pauv, thaum koj nkag mus rau hauv kev siv TV ntau dua lossis cov khoom siv suab, tshwj xeeb tshaj yog cov khoom siv hluav taws xob lossis qhov xwm ntawm lub zog siv, koj yuav tsum xub nrhiav seb lub chassis ntawm lub tshuab puas raug them , txwv tsis pub nws yuav yooj yim Lub TV, lub suab thiab lwm yam khoom siv uas them nrog lub nraub qaum ua rau luv luv ntawm lub qhov hluav taws xob, uas cuam tshuam rau hauv Circuit Court sib xyaw, ua rau ntxiv qhov txhaum ntawm qhov txhaum.
4. Sab hauv tsis kam ntawm PCB pawg thawj coj saib ntsuas yuav tsum loj
Thaum ntsuas lub DC hluav taws xob ntawm IC pins, multimeter nrog sab hauv kev sib tw ntawm lub taub hau taub ntau dua 20KΩ / V yuav tsum tau siv, txwv tsis pub yuav muaj qhov ntsuas loj yuam kev rau qee qhov ntsuas hluav taws xob.
5. Ua zoo mloog rau lub tshav kub tsis pom kev ntawm lub zog hluav taws xob sib xyaw ua ke thaum kuaj PCB pawg thawj coj saib
Lub zog hluav taws xob sib txuas ua ke yuav tsum muaj cov cua sov kom zoo, thiab nws tsis raug tso cai ua haujlwm nyob hauv lub xeev muaj hluav taws xob ntau tsis muaj qhov kub hnyiab.
6. qhov zoo ntawm soldering yuav tsum tau xyuas kom meej thaum kuaj PCB cov laug cam
Thaum soldering, lub solder yog khov kho, thiab cov txuam nrog solder thiab qhov hws zoo li yuav ua rau tsis muaj tseeb. Lub sijhawm soldering feem ntau tsis tshaj 3 vib nas this, thiab lub zog ntawm cov hlau soldering yuav tsum muaj txog 25W nrog cua kub sab hauv. Lub chaw hluav taws xob sib xyaw uas tau muag tau yuav tsum tau ua tib zoo xyuas. Nws yog qhov zoo tshaj plaws los siv ohmmeter los ntsuas seb puas muaj luv Circuit Court ntawm lub koob, paub meej tias tsis muaj qhov nqaws nplaum, thiab tom qab ntawd tig rau lub hwj chim.
7, Cov hlau txhuas ntawm PCB pawg thawj coj yuav tsum tau kuaj xyuas qhov zoo
Yog tias koj xav tau ntxiv cov khoom siv sab nraud los hloov qhov chaw puas ntawm cov kev sib txuas ntawm lub cev sib txuas, cov khoom siv me me yuav tsum tau xaiv, thiab cov xov hlau yuav tsum tsim nyog kom tsis txhob muaj qhov ntsuas tsis tsim nyog, tshwj xeeb tshaj yog cov av ntawm cov suab hluav taws xob amplifier integrated Circuit thiab preamplifier Circuit Court kawg. Cov.
8. Tsis txhob txiav txim siab qhov puas ntawm qhov sib txig sib luag ntawm ib qho yooj yim thaum kuaj PCB pawg thawj coj saib
Tsis txhob txiav txim siab rau txoj kev sib koom ua ke puas ntsoog yooj yim. Vim tias ntau lub voj voog txuas ua ke ncaj qha ua ke, ib zaug Circuit Court tsis zoo, nws yuav ua rau muaj ntau qhov kev hloov pauv voltage, thiab cov kev hloov no tsis tas yuav ua rau kev puas tsuaj ntawm qhov sib xyaw ua ke. Ntxiv rau, qee qhov xwm txheej, ntsuas ntsuas ntawm txhua tus pin yog qhov txawv ntawm qhov hluav taws xob qub. Thaum cov txiaj ntsig sib luag lossis ib qho sib luag, nws tsis txhais tau tias kev sib koom ua ke yog qhov zoo. Vim tias qee qhov txhawm tsis zoo yuav tsis ua rau hloov mus rau DC voltage.
9. Tsis txhob ua rau lub voj voog luv ntawm cov pins thaum kuaj PCB
Thaum ntsuas qhov ntsuas hluav taws xob lossis siv oscilloscope sojntsuam kom ntsuas cov qauv yoj, tsis txhob ua rau luv luv ntawm cov pins ntawm txoj kev sib xyaw vim yog zawv zawg ntawm qhov ntsuas coj los ntsuas. Nws yog qhov zoo tshaj plaws los ntsuas ntawm tus ntsuas hluav taws xob luam tawm ncaj qha mus txuas rau pins. Ib qho hluav taws xob luv luv ib ntus tuaj yeem yooj yim ua rau kev sib xyaw ntawm kev sib txuas. Koj yuav tsum ceev faj dua thaum kuaj cov pob-tiaj CMOS kev sib xyaw.