Ma ke kaʻina hana PCB hoʻolālā, no ka mea, ʻo ka mokulele mokulele, e alakaʻi i kahi mokulele kūmole o ka hōʻailona hoʻopau ʻole, no ka hōʻailona haʻahaʻa pinepine, ʻaʻohe mea e hana ai, i nā ʻōnaehana uila pinepine, hōʻike pinepine pinepine i ka mokulele kūmole no ke ala hoʻi, ʻo ia ke ala kahe , inā hoʻopau ka ʻili kūmole, hōʻailona ma o ka haʻihaʻi, e lawe kēia i nā pilikia he nui, E like me EMI, crosstalk a me nā pilikia ʻē aʻe. I kēia hihia, pono e humuhumu ʻia ka mahele e hāʻawi i kahi ala hoʻi hope pōkole no ka hōʻailona. ʻO nā hana hana maʻamau me ka hoʻohui ʻana i ka capacitance humuhumu a me ke alahaka:

A. Stacing Capacitor˖

ʻO ka maʻamau, hoʻonoho ʻia kahi capacitor pālolo 0402 a 0603 paha ma ka ʻāpana o ka hōʻailona, ​​a ʻo ka capacitance o ka capacitor ʻo 0.01uF a i ʻole 0.1uF. Inā ʻae ka hakahaka, hiki ke hoʻohui ʻia nā mea hou aʻe 䘉 e like me nā capacitor ˗. I kēia manawa, e hoʻāʻo e hōʻoia i ka laina hōʻailona i loko o ka capacitance humuhumu o 200mil. ʻO ka liʻiliʻi o ka mamao, ʻo ka ʻoi aku ka maikaʻi ˗ a ʻo nā pūnaewele ma nā ʻaoʻao ʻelua o ka capacitor e kūlike i nā pūnaewele o ka mokulele kūmole kahi e holo ai ka hōʻailona. E ʻike i nā pūnaewele i hoʻopili ʻia ma nā wēlau ʻelua o ka capacitor ma ke Kiʻi 1, a ʻo nā ʻokoʻa ʻelua i hōʻike ʻia i nā kala ʻelua.

Pehea e hana ai i ka papa PCB paʻa

B. Alahaka ma ˖

ʻO ka maʻamau ka “packet ground packet ground processing” i ka papa hōʻailona ma waena o ka mahele, ʻo ia paha ka ʻeke o nā laina hōʻailona pūnaewele ʻē aʻe, ʻo kēia “ground packet” ka mānoanoa e hiki ai, kēia hana hana, e nānā i kēia kiʻi

Pehea e hana ai i ka papa PCB paʻa

Eia kahi ʻōlelo hoʻohui o ka hanauna maʻamau o ka mahele keʻa ˖

1. ʻO ka mahele aʻe ˖ ma ka papa hoʻokahi, nui paha nā lako mana e hana, a me ka helu o nā lako mana ma lalo o ka helu palena; Ma hope o ka noʻonoʻo ākea, pono mākou e hana ma ka mokulele uila. I kekahi manawa hoʻomaʻemaʻe a maʻemaʻe hoʻi ia ˗ a i kekahi manawa ʻaʻole hiki ke pale i kahi pilina lohi, a kaumaha paha i kahi hōʻailona hōʻemi iki, akā pono ia e hoʻoponopono. ʻO kēia manaʻo e like me ka hele ʻana i ka home, ʻeli koke kahi auwai, he pilikia kēia, a puni ia, kahi mamao iki, alualu ʻia paha e kahi ʻīlio a kekahi; pono,

E kūkulu maʻalahi i kahi alahaka, a i ʻole hiki iā ʻoe ke hoʻi i ka home.

No laila, ʻokoʻa i ka hoʻohālikelike hihiu, inā ʻoe e hana i ka pā i kahi PCB, a laila

E hōʻoia i ka laina hōʻailona, ​​a i ʻole kekahi mea e hiki ke hana.

2. ʻAʻole maʻalahi ke kūlana ma luna aʻe e kāpae wale, a aia kekahi hanana e ʻike ʻole ʻia. Inā ʻoi loa ka VIA, e alakaʻi ana i ka ʻoki ʻana o ka mokulele, ma hope o nā mea āpau, ua noho ʻia e ka lewa, e hāʻawi hou aʻe i nā mea aʻe e noho ai, e hopena ana i ka ʻoki ʻana, ʻaʻole wehewehe ʻia kēia kūlana ma aneʻi, ka pili. hoʻolauna mea hou aku. I kēia hihia, pono ʻoe e hoʻonohonoho i nā lula maikaʻi i ka wā mua a nānā pono iā lākou i ka wā ma hope.

Clock, reset, hōʻailona ma luna o 100M a ʻaʻole hiki ke hoʻokaʻawale ʻia kekahi mau hōʻailona kaʻa kī. Aia ma ka liʻiliʻi he hoʻokahi mokulele piha, ʻoi aku ka maikaʻi o ka mokulele GND.

Hōʻailona uaki, hōʻailona wikiwiki a me nā hōʻailona koʻikoʻi e pāpā i ka hoʻokaʻawale kea;

Pono e kaulike ʻia nā hōʻailona ʻokoʻa i ka honua e pale i ka hoʻokaʻawale ʻana i ka laina hoʻokahi. (Vertical cross segmentation a hiki i ka hiki)

Pehea e hana ai i ka papa PCB paʻa

Aia ke ala hoʻi pinepine pinepine o nā hōʻailona āpau ma lalo pono o ka laina hōʻailona o ka papa e pili ana. Hiki ke hōʻemi nui ʻia nā pilikia a me nā pilikia manawa ma ke kau ʻana i kahi papa paʻa ma lalo o ka hōʻailona e hāʻawi ana i kahi loop loop no ka hōʻailona. Pono e hoʻohana i kahi capacitor kaapuni 0.01uF ke hiki ʻole ke hoʻokaʻawale a me ke keʻa ma waena o nā uea a me ka papa. Ke hoʻohana ʻia nā capacitors loop, e hoʻokau ʻia lākou i kahi kokoke e hiki ai i ke kikowaena o ka laina hōʻailona a me ka paku o ka papa.