Iprototyping yebhodi yesekethe eprintiweyo (PCB) eneemfuno zengxolo ephantsi inokuba ngumsebenzi onzima, kodwa ngokuqinisekileyo inokufezekiswa ngendlela eyiyo kunye nokuqonda imigaqo kunye nobuchule obubandakanyekayo.Kule post yebhlog, siza kuphonononga amanyathelo kunye neengqwalasela ezinokukunceda wenze iiprototypes zePCB ezinengxolo ephantsi. Ngoko, masiqalise!
1. Qonda ingxolo kwiiPCBs
Phambi kokuphonononga kwinkqubo yeprototyping, kuyafuneka ukuba uqonde ukuba yintoni ingxolo kwaye ichaphazela njani ii-PCBs. Kwi-PCB, ingxolo ibhekisa kwimiqondiso yombane engafunekiyo enokubangela uphazamiseko kwaye iphazamise indlela yomqondiso oyifunayo. Ingxolo inokubangelwa zizinto ezahlukeneyo, kubandakanywa ukuphazamiseka kwe-electromagnetic interference (EMI), iilophu zomhlaba, kunye nokubekwa kwecandelo ngendlela engafanelekanga.
2. Khetha amacandelo okwandisa ingxolo
Ukukhetha icandelo kubalulekile ekucutheni ingxolo kwiiprototypes zePCB. Khetha amacandelo ayilelwe ngokukodwa ukunciphisa ukukhutshwa kwengxolo, njengezandisi zesandi esiphantsi kunye nezihluzi. Ukongezelela, cinga ukusebenzisa izixhobo zokunyuka kwendawo (SMDs) endaweni yezixhobo zomngxuma, njengoko zinokunciphisa i-parasitic capacitance kunye ne-inductance, ngaloo ndlela zibonelela ngentsebenzo engcono yengxolo.
3. Ukubekwa kwecandelo ngokuchanekileyo kunye nendlela
Ukucwangcisa ngononophelo ukubekwa kwamacandelo kwi-PCB kunokunciphisa kakhulu ingxolo. Iqela lamalungu angeva ingxolo kunye kwaye kude kumandla aphezulu okanye amacandelo aphezulu-frequency. Oku kunceda ukunciphisa umngcipheko wokudibanisa ingxolo phakathi kweendawo ezahlukeneyo zesekethe. Xa usendleleni, zama ukwahlula imiqondiso enesantya esiphezulu kunye nesantya esisezantsi ukunqanda uphazamiseko olungeyomfuneko.
4. Imigangatho yomhlaba kunye namandla
Ukubekwa komhlaba okufanelekileyo kunye nokuhanjiswa kwamandla kubalulekile kuyilo lwePCB olungangxolo. Sebenzisa umhlaba ozinikeleyo kunye neenqwelomoya zamandla ukubonelela ngeendlela zokubuya eziphantsi kwe-impedance ye-high-frequency currents. Oku kunceda ukunciphisa ukuguquguquka kwamandla ombane kunye nokuqinisekisa ireferensi yesignali ezinzileyo, ukunciphisa ingxolo kwinkqubo. Ukwahlula amabala ophawu lwe-analog kunye nedijithali kunciphisa ngakumbi umngcipheko wongcoliseko lwengxolo.
5. Iteknoloji yesekethe yokunciphisa ingxolo
Ukuphumeza ubuchule besekethe yokunciphisa ingxolo kunokunceda ukuphucula ukusebenza kwengxolo iyonke yeeprototypes zePCB. Umzekelo, ukusebenzisa i-decoupling capacitors kwiireyili zamandla kunye kufutshane nezixhobo ezisebenzayo kunokucinezela ingxolo ephezulu-frequency. Ukusebenzisa iindlela zokukhusela, ezinjengokubeka iisekethe ezibalulekileyo kwiindawo ezivaliweyo zentsimbi okanye ukongeza isikhuselo esisezantsi, kunokunciphisa ingxolo enxulumene ne-EMI.
6. Ukulinganisa kunye nokuvavanya
Phambi kokuba iprototype ye-PCB yenziwe, ukusebenza kwayo kufuneka kulinganiswe kwaye kuvavanywe ukuchonga nokusombulula nayiphi na imiba enokubakho enxulumene nengxolo. Sebenzisa izixhobo zokulinganisa ukuhlalutya ukuthembeka komqondiso, i-akhawunti yamacandelo e-parasitic, kunye nokuvavanya ukusasazwa kwengxolo. Ukongezelela, uvavanyo olusebenzayo lwenziwa ukuqinisekisa ukuba i-PCB ihlangabezana neemfuno ezifunekayo zengxolo ephantsi ngaphambi kokuqhubeka nemveliso.
Isishwankathelo
Ukuchwetheza iiPCBs ezineemfuno zengxolo ephantsi kufuna ukucwangciswa ngononophelo kunye nokuphunyezwa kobuchule obahlukeneyo. Ungayinciphisa kakhulu ingxolo kuyilo lwePCB yakho ngokukhetha amacandelo okwandisa ingxolo, ukunikela ingqalelo ekubekweni kwecandelo kunye nendlela, ukulungelelanisa umhlaba kunye neenqwelomoya zamandla, usebenzisa iindlela zokunciphisa ingxolo, kunye nokuvavanya ngokucokisekileyo iiprototypes.
Ixesha lokuposa: Oct-29-2023
Emva
