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用作自動(dòng)音頻限幅二極管

作者：時(shí)間：2016-11-12 來源：網(wǎng)絡(luò)

如圖是由限幅二極管D和電阻R2組成的自動(dòng)音頻限幅器原理圖。當(dāng)無信號(hào)輸入時(shí)，有小電流I自地向流經(jīng)R1，R2，R3，R4到電源負(fù)端。此電流在電阻R上產(chǎn)生約

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關(guān)鍵詞： 自動(dòng)音頻 限幅二極管