Indlela yokubala ye- PCB ulayini nobubanzi bamanje bumi kanje:

Okokuqala bala indawo enqamulelayo yeTrack. Ubukhulu be-foil yethusi yama-PCBS amaningi yi-35um (uma ungaqiniseki, ungabuza UMKhiqizi we-PCB). Indawo enqamulelayo yandiswa ngobubanzi bolayini. Kukhona inani lokuqina lokuqina kwamanje kusuka ku-15 kuye ku-25 amperes nge-millimeter yesikwele.

Linganisa indawo enqamulelayo ukuthola amandla okugeleza okugelezayo. I = KT0.44a0.75K yi-coefficient yokulungisa. Ngokuvamile, u-0.024 uthathwa kusendlalelo sangaphakathi sensimbi egqokiwe yethusi, kuthi i-0.048t ithathwe kusendlalelo sangaphandle njengokukhuphuka kokushisa okuphezulu, futhi iyunithi yiCelsius (iphuzu lokuncibilika lethusi lingu-1060 ℃). I-A iyindawo enqamulelayo ehlanganiswe ngethusi, futhi iyunithi iyisikwele MIL (hhayi mm mm, Ngingowamanje wamanje ovunyelwe kakhulu, i-unit of amperes (AMP) imvamisa i-10mil = 0.010inch = 0.254, engaba yi-1A, 250MIL = 6.35mm, futhi iyidatha eyi-8.3A. Ukubalwa komthamo wamanje wokuphatha we-PCB bekuntuleka izindlela nezindlela zobuchwepheshe ezigunyaziwe. Onjiniyela be-CAD abanolwazi bathembele kokuhlangenwe nakho kwabo siqu ukwenza izinqumo ezinembe kakhudlwana. Kepha kumfundamakhwela we-CAD, akunakushiwo ukuthi uhlangabezana nenkinga enzima.

Umthamo wamanje wokuphatha we-PCB uncike kulezi zici ezilandelayo: ububanzi bomugqa, ukujiya komugqa (ukujiya kocingo lwethusi), ukwanda kwamazinga okushisa okuvumelekile. Njengoba sonke sazi, ububanzi bolayini we-PCB, kukhula amandla okuphatha njengamanje. Lapha, ngicela ungitshele: ucabanga ukuthi i-10MIL ingamelana ne-1A ngaphansi kwezimo ezifanayo, ngabe i-50MIL ingamelana namanje kangakanani, ingabe yi-5A? Impendulo, yebo, cha. Ububanzi bomugqa buseyunithi ye-Inch (Inch Inch = 25.4 millimeters) 1 oz. Ithusi = 35 micron obukhulu, 2 oz. = 70 micron obukhulu, 1 oz = 0.035mm 1mil. = 10-3inch. Landela i-Capacityper MIL STD 275

Ukwehla kwengcindezi okubangelwe ukumelana nobude bezintambo kufanele futhi kubhekwe ekuhlolweni. Ithini kuma-welds enqubo lisetshenziselwa ukwandisa umthamo wamanje kuphela, kepha kunzima ukulawula ivolumu yethini. 1 OZ ithusi, 1mm ububanzi, ngokuvamile i-galvanometer engu-1-3, kuya ngobude bomugqa wakho, izidingo zokwehla kwengcindezi.

Inani lamanje eliphakeme kakhulu kufanele libe inani elivunyelwe kakhulu elingaphansi komkhawulo wokukhuphuka kwezinga lokushisa, futhi inani le-fuse inani lapho ukuphakama kwezinga lokushisa kufinyelela khona lapho kuncibilika khona ithusi. Isib. Izinga lokushisa elingama-50mil 1oz likhuphuka ngama-1060 degrees (okusho iphuzu lokuncibilika ngethusi), okumanje kungu-22.8A.