ʻO ke ʻano helu ʻana o PCB penei ka laula a me ke au:

E helu mua i ka ʻāpana ʻāpana o ke Track. ʻO ka mānoanoa o ka pepa keleawe o ka hapa nui o PCBS he 35um (inā ʻaʻole maopopo ʻoe, hiki iā ʻoe ke noi i ka mea hana PCB). Hoʻonui ʻia ka ʻāpana ʻāpana e ka laulā o ka laina. Aia kekahi waiwai empirical no ka nui o kēia manawa mai 15 a 25 mau amperes ma kēlā me kēia millimeter.

Kaupaona i ka ʻāpana o ke keʻa e loaʻa ai ka mana o ka holo. ʻO I = KT0.44a0.75K ke koina hoʻoponopono. ʻO ka maʻamau, lawe ʻia ka 0.024 i ka papa o loko o ka uea keleawe keleawe, a lawe ʻia ʻo 0.048t i ka papa o waho e like me ke kiʻekiʻe o ka mahana, a ʻo Celsius (ka pae hoʻoheheʻe o ke keleawe 1060 ℃). A ʻo ia ka ʻāpana ʻāpana o ka pale keleawe, a ʻo ka anakahi he MIL kuea (ʻaʻole mm mm, ʻO wau ka mea i ʻae ʻia i kēia manawa, ʻo ka unit of amperes (AMP) he 10mil = 0.010inch = 0.254 maʻamau, a hiki i 1A, 250MIL = 6.35mm, a he ʻikepili 8.3A. ʻO ka helu ʻana o ka hiki ke halihali PCB i kēia manawa ua nele i nā ʻano hana ʻenehana a me nā formulate. Hilinaʻi nā ʻenekini ʻo CAD i ka ʻike pilikino e hana i nā hoʻoponopono pono hou aʻe. Akā i ka CAD novice, ʻaʻole hiki ke ʻōlelo ʻia e kū i kahi pilikia paʻakikī.

Aia ka mana hali o PCB i kēia mau mea: ka laula o ka laina, ka mānoanoa o ka laina (ka mānoanoa o ka pepa keleawe), ka piʻi ʻana o ka mahana. E like me kā mākou āpau, ʻo ka laulā o ka laina PCB, ʻo ka nui o ka hiki ke hāpai i kēia manawa. Ma aneʻi, e ʻoluʻolu e haʻi iaʻu: ke manaʻo nei hiki i ka 10MIL ke kū i mua o 1A ma lalo o nā kūlana like, pehea ka nui o 50MIL i kēia manawa, ʻo 5A ia? ʻO ka pane, ʻoiai, ʻaʻole. Aia ka laula o ka laina i ka anakahi o Inch (Inch Inch = 25.4 millimeter) 1 oz. Keleawe = 35 micron mānoanoa, 2 oz. = 70 micron mānoanoa, 1 oz = 0.035mm 1mil. = 10-3inch. Hōʻuluʻulu Manaʻo MIL STD 275

ʻO ke kulu kaomi i hoʻokumu ʻia e ka pale ʻana o ka lōʻihi uea pono e noʻonoʻo ʻia i ka hoʻokolohua. Hoʻohana wale ʻia ke tini ma nā wili hana e hoʻonui ai i ka hiki i kēia manawa, akā paʻakikī e kaohi i ka nui o ka pi. 1 OZ keleawe, 1mm ākea, maʻamau 1-3 A galvanometer, kaukaʻi ʻia i kāu lōʻihi laina, nā koina kaomi puʻe.

ʻO ke koina o kēia manawa ke kumu kūʻai i ʻae ʻia ma lalo o ka palena piʻi o ka mahana, a ʻo ka waiwai fuse ka waiwai e piʻi ai ka mahana i ka pae hoʻoheheʻe o ke keleawe. Eg. Piʻi ka mahana 50mil 1oz me 1060 kekelē (ʻo ia hoʻi ka pae hoʻoheheʻe keleawe), 22.8A i kēia manawa.