Ngokwethulwa kobuso be-mount mount, ukuminyana kwepakethe kwe PCB ibhodi kwanda ngokushesha. Ngakho-ke, ngisho nakwamanye amabhodi e-PCB anesisindo esiphansi nobungako obuncane, ukutholwa okuzenzakalelayo kwamabhodi e-PCB kuyisisekelo. Ekuhloleni kwebhodi lesifunda le-PCB eliyinkimbinkimbi, indlela yokuhlolwa kombhede wenaliti kanye ne-probe ephindwe kabili noma indlela yokuhlola inaliti endizayo izindlela ezimbili ezivamile.

1. Indlela yokuhlolwa kombhede wenaliti

Le ndlela iqukethe ama-probes alayishwe entwasahlobo axhunywe endaweni ngayinye yokuthola ku-PCB. Intwasahlobo iphoqa uphenyo ngalunye kwingcindezi ye-100-200g ukuqinisekisa ukuxhumana okuhle endaweni ngayinye yokuhlola. Ama-probe anjalo ahlelwe ndawonye futhi abizwa ngokuthi “imibhede yenaliti”. Amaphuzu wokuhlola namasiginali wokuhlola angahlelwa ngaphansi kokulawulwa kwesoftware yokuhlola. Yize kungenzeka ukuthi uvivinye zombili izinhlangothi ze-PCB usebenzisa indlela yokuhlola umbhede wephini, lapho kuklanywa i-PCB, wonke amaphuzu wokuhlola kufanele abe sebusweni be-PCB. Imishini yokuhlola umbhede wenaliti iyabiza futhi kunzima ukuyinakekela. Izinaliti zikhethwa ngokulandelana okuhlukile ngokuya ngohlelo lwazo oluthile.

Iprosesa eyisisekelo yenhloso ejwayelekile inebhodi eboshiwe enezikhonkwane ezihlukaniswe u-100, 75, noma 50mil phakathi kwezikhungo. Izikhonkwane zisebenza njengophenyo futhi zenze ukuxhumana okuqondile kwemishini kusetshenziswa izixhumi zikagesi noma ama-node ebhodini le-PCB. Uma i-pad ku-PCB ifana negridi yokuhlola, ifilimu ye-polyvinyl acetate, eyenziwe ngophawu ngokusho, ibekwa phakathi kwegridi ne-PCB ukwenza lula ukwakheka kwamaphenya athile. Ukutholwa kokuqhubeka kutholakala ngokufinyelela ezindaweni zokugcina zemesh, ezichazwe njengezixhumanisi ze-Xy zephedi. Njengoba yonke inethiwekhi eku-PCB ihlolwa ngokuqhubekayo. Ngale ndlela, ukutholwa okuzimele kuqediwe. Kodwa-ke, ukusondela kwephenyo kukhawulela ukusebenza kwendlela yokulala yenaliti.

2. Iphenyo kabili noma indlela yokuhlola inaliti endizayo

Umhloli wenaliti endizayo akanciki kuphethini lepini elikhishwe kulungiselelo noma kubakaki. Ngokususelwa kulolu hlelo, ama-probe amabili noma ngaphezulu abekwe emakhanda amancane kazibuthe, ahamba ngokukhululeka endizeni ye-XY, futhi amaphuzu okuhlola alawulwa ngqo yimininingwane ye-CADI Gerber. Ama-probe amabili angahamba ngaphakathi kwe-4mil komunye nomunye. Ama-probes angahamba ngokuzimela futhi awukho umkhawulo wangempela wokuthi bangasondelana kangakanani. Umhloli onezingalo ezimbili eziya phambili naphambili kusekelwe ezilinganisweni ze-capacitance. Ibhodi le-PCB licindezelwe ungqimba oluvikela ngocwecwe lwensimbi olusebenza njengolunye ucwecwe lwensimbi lwe-capacitor. Uma kunesifunda esifushane phakathi kwemigqa, i-capacitance izoba nkulu kunangesikhathi esithile. Uma kunama-breaker wesifunda, i-capacitance izoba ncane.

Okwegridi ejwayelekile, igridi ejwayelekile yamabhodi nemishini yokukhweza ebusweni enezinto zephini ingu-2.5mm, nephedi yokuhlola kufanele ibe nkulu noma ilingane no-1.3mm. Uma igridi incane, inaliti yokuhlola incane, inyinyitheka futhi ilimele kalula. Ngakho-ke, kukhethwa igridi enkulu kuno-2.5mm. Ukuhlanganiswa komhloli womhlaba wonke (umhloli wegridi ojwayelekile) kanye nomhloli wenaliti endizayo kwenza ukuhlolwa okunembile nokonga amabhodi we-PCB aphakeme kakhulu. Enye indlela ukusebenzisa umhloli we-raber conductive, inqubo engasetshenziswa ukuthola amaphuzu aphambuka kugridi. Kodwa-ke, ukuphakama okuhlukile kwamapayipi nge-hot air leveling kuzokuvimbela ukuxhumana kwamaphoyinti wokuhlola.

Kuvamise ukwenziwa amazinga amathathu alandelayo okutholwa:

1) Ukutholwa kwebhodi elingabonakali;

2) Ukutholwa kwe-inthanethi;

3) Ukutholwa komsebenzi.

Umhloli wohlobo lomhlaba wonke angasetshenziselwa ukuhlola amabhodi e-PCB wesitayela nohlobo olulodwa, kanye nezinhlelo zokusebenza ezikhethekile.