1746-OB8

1746-OB8

1746-OB8

　電子電路中，共阻抗干擾對(duì)電路的正常工作帶來很大影響。在PCB 電路設(shè)計(jì)中，尤其在高頻電路的PCB 設(shè)計(jì)中，必須防止地線的共阻抗所帶來的影響。通過對(duì)共阻抗干擾形式的分析，詳細(xì)介紹一點(diǎn)接地在電子電路中，特別是在高頻電路中對(duì)共阻抗干擾的抑制作用，以及采用一點(diǎn)接地防止共阻抗應(yīng)注意的問題。

　　同時(shí)對(duì)PCB 板內(nèi)地線布局的主要形式和要求進(jìn)行了簡(jiǎn)要闡述。

　　在電子電路中，多數(shù)元器件都要通過地線形成回路，線設(shè)計(jì)合理與否，直接影響電路的工作。盡可能地降低由于地線設(shè)計(jì)不和理產(chǎn)生對(duì)信號(hào)傳輸?shù)母蓴_。

　　在電路圖中，接地常用符號(hào)來表示，表示電路中的零電位，并用來作為電路的其他各點(diǎn)的公共參考點(diǎn)。電路的各點(diǎn)電壓、電流和信號(hào)電平的大小均是以地線作為基準(zhǔn)電壓來表示的。在閱讀電路圖和理解電路工作狀態(tài)時(shí)，常把地線和各接地點(diǎn)之間視作無電位差的零電位點(diǎn)。而在實(shí)際電路工作中，由于地線的阻抗（ 電阻、電感） 的存在，會(huì)產(chǎn)生一定的電位差。這些電位差的存在，必然對(duì)電路的工作帶來影響。在PCB 設(shè)計(jì)中必須注意和消除地線阻抗的影響。

備貨，備貨，降降降，火火火，火火火……

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公司名稱：廈門泰尼電氣有限公司

聯(lián)系人：小黃（銷售代表）

聯(lián)系電話：0592-6809319

傳真號(hào)碼：0592-6890859（麻煩備注01006收）

手機(jī)：18950191386

QQ號(hào)碼:2917675397

郵箱：2917675397@qq.com

誠信經(jīng)營(yíng)，質(zhì)量為首，誠信至上，泰尼電氣小黃竭誠為您服務(wù)?。?！

 

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