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PCB的設(shè)計(jì)質(zhì)量不僅直接影響到電子產(chǎn)品的可靠性，還關(guān)系到產(chǎn)品的穩(wěn)定性，甚至是設(shè)計(jì)成敗的關(guān)鍵。在進(jìn)行PCB設(shè)計(jì)時(shí)，除了要為電路中的元器件提供正確無誤的電氣連接外，還應(yīng)充分考慮印制板的抗干擾性?；陔姶偶嫒菪栽瓌t，抗干擾設(shè)計(jì)應(yīng)包括三個(gè)方面：一是噪聲源，二是切斷噪聲傳遞途徑，三是降低受擾設(shè)備的噪聲敏感度。印制板的噪聲應(yīng)從設(shè)計(jì)階段開始，貫穿于電路原理圖設(shè)計(jì)、印制板圖設(shè)繪、元器件選用、印制板安裝引線等一系列環(huán)節(jié)中。