9 nzeru wamba waPCB fakitalekuyendera board board kumayambitsidwa motere:
1. Ndizoletsedwa kugwiritsa ntchito zida zoyeserera zokhazikika kuti zikhudze TV yamoyo, zomvera, kanema ndi zida zina zapansi kuti muyese bolodi la PCB popanda chosinthira chodzipatula.
Ndizoletsedwa kuyesa mwachindunji TV, zomvera, makanema ndi zida zina popanda chosinthira mphamvu chodzipatula chokhala ndi zida ndi zida zokhala ndi zotchingira pansi.Ngakhale chojambulira chamakaseti chawayilesi chimakhala ndi chosinthira mphamvu, mukakumana ndi zida zapadera za TV kapena zomvera, makamaka mphamvu yotulutsa kapena mtundu wamagetsi omwe amagwiritsidwa ntchito, choyamba muyenera kudziwa ngati chiwongolero cha makinawo chaperekedwa. , Apo ayi zidzakhala zophweka kwambiri TV, zomvetsera ndi zipangizo zina zomwe zimayimbidwa ndi mbale yapansi zimapangitsa kuti magetsi azikhala ochepa, omwe amakhudza dera lophatikizidwa, zomwe zimapangitsa kuti cholakwikacho chiwonjezeke.
2. Samalani ndi ntchito yotchinjiriza ya chitsulo chosungunuka poyesa bolodi la PCB
Sizololedwa kugwiritsa ntchito chitsulo cha soldering kuti chiwotchedwe ndi mphamvu.Onetsetsani kuti chitsulo cha soldering sichinaperekedwe.Gwirani chipolopolo cha chitsulo chosungunuka.Samalani ndi dera la MOS.Ndikotetezeka kugwiritsa ntchito chitsulo chochepa chamagetsi cha 6 ~ 8V.
3. Musanayambe kuyesa bolodi la PCB, mvetsetsani mfundo yoyendetsera mabwalo ophatikizika ndi mabwalo okhudzana
Musanayambe kuyang'ana ndikukonza dera lophatikizika, muyenera kudziwa kaye ntchito ya dera lophatikizika lomwe limagwiritsidwa ntchito, dera lamkati, magawo akulu amagetsi, gawo la pini iliyonse, ndi mphamvu ya pini, mawonekedwe a waveform ndi magwiridwe antchito. mfundo ya dera lopangidwa ndi zigawo zotumphukira.Ngati zomwe zili pamwambazi zakwaniritsidwa, kusanthula ndi kufufuza kudzakhala kosavuta.
4. Osayambitsa dera lalifupi pakati pa zikhomo poyesa bolodi la PCB
Mumayezera ma voliyumu kapena kuyesa ma waveform ndi kafukufuku wa oscilloscope, musapangitse kuzungulira kwakanthawi pakati pa mapini a dera lophatikizika chifukwa cha kutsetsereka kwa mayendedwe oyeserera kapena ma probe, ndikuyezera pagawo losindikizidwa lolumikizidwa mwachindunji ndi zikhomo.Kuzungulira kwakanthawi kochepa kumatha kuwononga mosavuta dera lophatikizika.Muyenera kusamala kwambiri poyesa mabwalo ophatikizika a CMOS okhala ndi phukusi.
5. Kukana kwamkati kwa chipangizo choyesera cha bolodi cha PCB kuyenera kukhala kwakukulu
Poyezera mphamvu ya DC ya zikhomo za IC, multimeter yokhala ndi kukana kwamkati kwa mutu wa mita wamkulu kuposa 20KΩ/V iyenera kugwiritsidwa ntchito, apo ayi padzakhala cholakwika chachikulu cha voteji ya pini zina.
6. Samalani kutentha kwa magetsi osakanikirana ndi magetsi poyesa bolodi la PCB
Dongosolo lophatikizika lamagetsi liyenera kukhala ndi kutentha kwabwino, ndipo sililoledwa kugwira ntchito pamalo amphamvu kwambiri popanda kutentha.
7. Waya wotsogolera wa bolodi la PCB uyenera kuyesedwa moyenera
Ngati mukufuna kuwonjezera zigawo zakunja m'malo kuonongeka mbali Integrated dera, zigawo zing'onozing'ono ayenera kusankhidwa, ndi mawaya ayenera kukhala wololera kupewa zosafunika parasitic lumikiza, makamaka grounding pakati Audio mphamvu amplifier Integrated dera ndi preamplifier dera mapeto. .
8. Kuyendera bolodi PCB kuonetsetsa kuwotcherera khalidwe
Pamene soldering, solder imakhala yolimba, ndipo kudzikundikira kwa solder ndi pores kungayambitse kugulitsa zabodza.Nthawi yowotchera nthawi zambiri imakhala yosapitilira masekondi atatu, ndipo mphamvu yachitsulo chogulitsira iyenera kukhala pafupifupi 25W ndikutentha kwamkati.Dera lophatikizidwa lomwe lagulitsidwa liyenera kuyang'aniridwa mosamala.Gwiritsani ntchito ohmmeter kuti muyese ngati pali dera lalifupi pakati pa zikhomo, kutsimikizira kuti palibe solder adhesion, ndiyeno kuyatsa mphamvu.
9. Musaweruze kuwonongeka kwa dera lophatikizidwa mosavuta pamene mukuyesaChithunzi cha PCB
Musaweruze kuti dera lophatikizidwa likuwonongeka mosavuta.Chifukwa mabwalo ambiri ophatikizika amalumikizidwa mwachindunji, dera likakhala lachilendo, lingayambitse kusintha kwamagetsi kangapo, ndipo zosinthazi sizimayamba chifukwa cha kuwonongeka kwa dera lophatikizika.Kuphatikiza apo, nthawi zina, mphamvu yoyezera ya pini iliyonse imakhala yosiyana ndi voteji wamba.Zofunikira zikafanana kapena zayandikira, sizingawonetse nthawi zonse kuti gawo lophatikizidwa ndilabwino.Chifukwa zolakwika zina zofewa sizingayambitse kusintha kwa magetsi a DC.
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