Blog

January 7, 2017

Umhlangano weBhodi Yesekethe Ephrintiwe: Into kanye nesenzo

Voltage High resistors
nguVictor W.

Umhlangano weBhodi Yesekethe Ephrintiwe: Into kanye nesenzo

Lapho ubheka ibhodi lesifunda eliphrintiwe eligcwele izinto eziningi, umuntu ojwayelekile angakhomba yonke iyunithi "njengebhodi lesifunda." Imboni yamakhompiyutha, nokho, ibiza le nto ngokuthi "inhlangano ephrintiwe yebhodi lesifunda" (PCBA). I-PCBA nayo iyisenzo. Kusho inqubo yokunamathisela izingxenye ebhodini.

Ukuqonda okuthile komhlangano webhodi lesifunda, into, kuyadingeka ngaphambi kokuba umuntu aqonde ukuthi ama-PCBA ahlangana kanjani. Isisekelo somhlangano yibhodi lesifunda eprintiwe (PCB) enamanethiwekhi ayinkimbinkimbi zezixhumi ezixhumanisayo ezibizwa ngemikhumbi. Okubekwe ku-PCB iqoqo lezakhi. Kunemikhakha emibili eyinhloko yezakhi, ehlakaniphile futhi engenzi lutho. Izingxenye ezi-Smart chips, ezibizwa nangokuthi iziyingi ezihlanganisiwe (i-ICs), ezenza imisebenzi enengqondo ngejubane elikhanyisa umbani.

Izingxenye zokwenziwa zifaka ama-capacitors, ama-resistors, ama-diode, amaswishi nama-transformers. Ama-capacitors agcina imali ekhokhwayo emile ezodedelwa ngezikhathi zesidingo esikhulu. Ama-Resistors anciphisa i-voltage yamanje noma i-amperage lapho kudingeka khona. Ama-diode aqondisa ukuhamba kukagesi ngendlela eya ngasendleleni eyodwa, futhi ukushintsha kuvule futhi kuvule imisinga. Amanye ama-PCB alawula ukunikezwa kwamandla anama-transformer namakhoyili kuwo ukushintsha amandla kagesi.

Umhlangano webhodi yesekethe, isenzo, senziwa ngokusebenzisa i-soldering. Indlela esetshenzisiwe incike kancane ekutheni izakhi kufanele zibekwe phezulu noma zifakwe emgodini. Ingxenye ebekwe phezulu (i-SMC) enye efakwa ku-PCB. Ingxenye efakwe ngobuchwepheshe obusebenzisa imbobo (i-THC) ihola ukuthi ifakwe kwizimbobo ezigxishwe emhlanganweni webhodi lesifunda ophrintiwe. Izingxenye ezifakwe phezulu zingathengiswa ngamagagasi noma izindlela zokuphinda zenziwe kabusha, noma ngesandla. Izakhi zomgodi zingathengiswa kuphela ngamaza noma ngesandla.

I-Wave noma i-Refloweringering isebenza kahle ekukhiqizweni kwevolumu ephezulu, kuyilapho isetshenziswa ngesandla kusetshenziselwa ama-prototypes amancane. Ekwi-wave soldering, i-PCB elayishwa ngezakhi idluliswa kugagasi elithile noma i-waterfall yomthengisi. Umthengisi wets zonke izindawo zezinsimbi eziveziwe ze-PCB ezingavikelwe ngumaskandi womthengisi. Muva nje, izakhi ezifakwe ngenhla ziye zathandwa kakhulu ezinhlelweni eziningi, ngakho-ke ukugcwalisa kabusha i-soldering sekuyindlela ehamba phambili. Ekuvuseleleni kabusha, ukunamathisela kwe-solder kusetshenziselwa ukubopha isikhashana into eyodwa noma ngaphezulu kumakhasi abo wokuxhumana. Okulandelayo, umhlangano wonke udluliswa kuhhavini ohlanhliwe noma ngaphansi kwesibani se-infrared. Lokhu kuncibilikisa umthengisi futhi kuxhuma unaphakade. Kwama-prototypes, uchwepheshe onekhono angakha izingxenye zomthengisi ngesandla ngaphansi kwesibonakhulu, esebenzisa ama-tweezers kanye ne-iron-tip soldering iron.

Voltage High resistors , , , , ,