Mukugadzira PCB, dhizaini inoita basa rakawanda uye rakawanda mukugadzira kwese pamwe nekushandiswa kwechigadzirwa.Yese danho rekugadzira rinoda kutarisirwa kwakanyanya uye kutariswa kuti uwane kuita kwakanaka.
Kurudyi-kona wiring kazhinji imamiriro ezvinhu anoda kudzivirirwa zvakanyanya sezvinobvira muPCB wiring, uye yatove imwe yemayero ekuyera kunaka kwewaya.Saka ingani mhedzisiro ine kona-yekona wiring pakufambisa kwemasaini?
Chechipiri, mitengo yacho yakasiyana nekuda kwemaitiro akasiyana ekugadzira.
Maitiro ekugadzira akasiyana anoguma nemitengo yakasiyana.Zvakadai sebhodhi-yakavezwa bhodhi uye tin-plated bhodhi, chimiro chenzira uye punching, kushandiswa kwemitsetse yesilika yekrini uye mitsara yakaoma yefirimu ichaumba mari yakasiyana, zvichiita kuti mutengo usiyane.
Mumusimboti, mativi ekurudyi-pakona anozoshandura hupamhi hwemutsara weiyo tambo yekufambisa, zvichikonzera discontinuities mu impedance.Muchokwadi, kwete chete yekona-yekona inoteedzera, asi zvakare inopinza-makona inoteedzera inogona kukonzera impedance shanduko.
Mhedzisiro yekona-yekona inoteedzera pachiratidzo inonyanya kuratidzwa muzvikamu zvitatu: kutanga, kona inogona kuenzana necapacitive mutoro pamutsetse wekutapurirana, inononoka kusimuka nguva;chechipiri, iyo impedance discontinuity ichakonzera chiratidzo chekuratidzira;
Yechitatu ndiyo EMI inogadzirwa nekurudyi-kona tipi.Iyo parasitic capacitance inokonzerwa nekurudyi-ekona yemutsetse wekutapurirana inogona kuverengerwa neinotevera empirical formula: C = 61W (Er) 1/2/Z0 Muiyo fomula iri pamusoro, C inoreva kuenzana kwekona yekona ( Unit: pF),
W inoreva hupamhi hweiyo trace (unit: inch), εr inoreva dielectric garage yepakati, uye Z0 ndiyo inokonzeresa hunhu hwetambo yekutapurirana.
Sezvo mutsara wehupamhi hwekona-yekona trace inowedzera, iyo impedance ipapo ichaderedzwa, saka imwe chiratidzo chekuratidzira chiitiko chichaitika.Isu tinokwanisa kuverenga iyo yakaenzana impedance mushure mekunge upamhi hwemutsara hwawedzerwa zvinoenderana neiyo impedance yekuverenga formula inotaurwa mumutsara wemutsara chitsauko.
Wobva waverenga ratidziro zvinoenderana neempirical formula: ρ=(Zs-Z0)/(Zs+Z0).Kazhinji, iyo impedance shanduko inokonzerwa nekurudyi-kona wiring iri pakati pe7% ne20%, saka iyo yakanyanya kuratidza coefficient inenge 0.1.Shenzhen ANKE PCB Co., LTD
Nguva yekutumira: Jun-25-2022
