Kusuka ku-PCB World.
Kungakhathaliseki ukuthi ibhodi elenziwe ngomunye umuntu noma ibhodi le-PCB eliklanywe futhi lenziwa uwena, into yokuqala ongayithola ukuhlola ubuqotho bebhodi, njengokuthamba, ukuqhekeka, amasekhethi amafushane, amasekhethi avulekile, nokubhoboza.Uma ibhodi liphumelela kakhulu Yiba nokuqina, khona-ke ungabheka inani lokumelana phakathi kokunikezwa kwamandla kanye nentambo yomhlabathi ngendlela.
Ngaphansi kwezimo ezijwayelekile, ibhodi elenziwe ngokwalo lizofaka izingxenye ngemuva kokuphothula ukuthayela, futhi uma abantu bekwenza, liyibhodi le-PCB elingenalutho elinezimbobo.Udinga ukufaka izingxenye ngokwakho uma uthola..
Abanye abantu banolwazi olwengeziwe mayelana namabhodi e-PCB abawaklamayo, ngakho bathanda ukuhlola zonke izingxenye ngesikhathi esisodwa.Eqinisweni, kungcono ukukwenza kancane kancane.
Ibhodi lesifunda le-PCB ngaphansi kokulungisa iphutha
Ukulungisa iphutha lebhodi le-PCB entsha kungaqala engxenyeni yokuphakelwa kwamandla.Indlela ephephile ukubeka i-fuse bese uxhuma ukunikezwa kwamandla (uma kwenzeka, kungcono ukusebenzisa ukunikezwa kwamandla okuzinzile).
Sebenzisa ukunikezwa kwamandla okuzinzile ukuze usethe amandla okuvikela okudlulele, bese ukhuphula kancane amandla ogesi ozinzile.Le nqubo idinga ukuqapha i-input current, i-voltage yokufaka kanye ne-voltage ephumayo yebhodi.
Lapho i-voltage ilungiswa phezulu, akukho ukuvikeleka okungaphezulu kwamanje futhi i-voltage yokuphuma ijwayelekile, khona-ke kusho ukuthi ingxenye yokuphakelwa kwamandla yebhodi ayinayo inkinga.Uma i-voltage evamile yokuphuma noma ukuvikela okungaphezu kwamanje kweqiwe, khona-ke imbangela yephutha kufanele iphenywe.
Ukufakwa kwengxenye yebhodi lesifunda
Faka kancane kancane amamojula phakathi nenqubo yokulungisa iphutha.Uma imojula ngayinye noma amamojula amaningana efakiwe, landela izinyathelo ezingenhla zokuhlola, okusiza ukugwema amanye amaphutha afihlekile ekuqaleni kokuklama, noma amaphutha okufakwa kwezingxenye, okungase kuholele ekushiseni okudlulele.Izingxenye ezimbi.
Uma kwenzeka ukwehluleka phakathi nenqubo yokufaka, izindlela ezilandelayo ngokuvamile zisetshenziselwa ukuxazulula inkinga:
Indlela yokuqala yokuxazulula inkinga: indlela yokulinganisa i-voltage.
Uma kwenzeka ukuvikeleka okweqile, ungajahi ukuqaqa izingxenye, qala uqinisekise i-voltage yephinikhodi yokuphakela amandla ye-chip ngayinye ukuze ubone ukuthi ikububanzi obujwayelekile yini.Bese uhlola i-voltage yereferensi, i-voltage yokusebenza, njll.
Isibonelo, lapho i-silicon transistor ivuliwe, i-voltage ye-BE junction izoba cishe ku-0.7V, futhi ukuhlangana kwe-CE ngokuvamile kuzoba ngu-0.3V noma ngaphansi.
Lapho kuhlolwa, kutholakala ukuthi i-BE junction voltage ingaphezulu kuka-0.7V (ama-transistors akhethekile afana ne-Darlington awafakiwe), bese kungenzeka ukuthi i-BE junction ivuliwe.Ngokulandelanayo, hlola i-voltage endaweni ngayinye ukuze uqede iphutha.
Indlela yesibili yokuxazulula inkinga: indlela yokujova isignali
Indlela yokujova isignali inzima kakhulu kunokulinganisa i-voltage.Lapho umthombo wesignali uthunyelwa kutheminali yokokufaka, sidinga ukukala i-waveform yephoyinti ngalinye ngokushintshana ukuze sithole iphuzu lephutha kufomethi yegagasi.
Vele, ungasebenzisa futhi ama-tweezers ukuthola ukuphela kokufaka.Indlela iwukuba uthinte itheminali yokufaka ngama-tweezers, bese ubheka impendulo yetheminali yokufaka.Ngokuvamile, le ndlela isetshenziswa esimweni se-audio and video amplifier circuits (inothi: isifunda esishisayo esiphansi kanye nesifunda esiphezulu se-voltage) Ungasebenzisi le ndlela, ijwayele izingozi zokushaqeka kagesi).
Le ndlela ithola ukuthi isigaba sangaphambilini sijwayelekile futhi isigaba esilandelayo siyaphendula, ngakho-ke iphutha alikho esigabeni esilandelayo, kodwa esigabeni esedlule.
Indlela yesithathu yokuxazulula inkinga: enye
Lezi ezimbili ezingenhla ziyizindlela ezilula futhi eziqondile.Ngaphezu kwalokho, isibonelo, ukubona, ukuhogela, ukulalela, ukuthinta, njll., okuvame ukushiwo, onjiniyela abadinga ulwazi oluthile ukuze bakwazi ukubona izinkinga.
Ngokuvamile, "bheka" akukhona ukubuka isimo semishini yokuhlola, kodwa ukubona ukuthi ukubukeka kwezingxenye kuphelele yini;"iphunga" ikakhulukazi libhekisela ekutheni iphunga lezingxenye alijwayelekile yini, njengephunga lokusha, i-electrolyte, njll. Izingxenye ezijwayelekile zingaphakathi Uma zonakalisiwe, zizokhipha iphunga elibi elivuthayo.
Futhi "ukulalela" ikakhulukazi ukulalela ukuthi umsindo webhodi ujwayelekile yini ngaphansi kwezimo zokusebenza;mayelana "nokuthinta", akukhona ukuthinta ukuthi izingxenye zikhululekile yini, kodwa ukuzwa ukuthi izinga lokushisa lezingxenye lijwayelekile yini ngesandla, isibonelo, kufanele kubanda ngaphansi kwezimo zokusebenza.Izingxenye ziyashisa, kodwa izingxenye ezishisayo zibanda ngendlela engavamile.Ungayifaki ngezandla zakho ngokuqondile ngesikhathi sokuthinta ukuvimbela isandla ekushiseni ukushisa okuphezulu.