導(dǎo)線的選擇
導(dǎo)線的選擇應(yīng)根據(jù)傳輸信號(hào)的電平（或功率電平）、頻率范圍、敏感情況及隔離要求來確定，只有分析信號(hào)電平與波形，才能正確選用傳輸電纜。選用傳輸電纜的一般原則如下：
- 電源線，如380V交流、220V交流、27V直流一般不用屏蔽電纜，但電源線干擾大時(shí)例外。
- 低頻信號(hào)線以及隔離要求很嚴(yán)格的多點(diǎn)接地和單點(diǎn)接地線路應(yīng)采用屏蔽雙絞線。
- 單點(diǎn)接地的音頻線路和內(nèi)部電源線應(yīng)采用雙絞線。
- 對(duì)于重要的射頻脈沖、高頻信號(hào)以及寬頻帶內(nèi)阻抗匹配等，應(yīng)選擇同軸電纜。
- 數(shù)字電路和脈沖電路應(yīng)采用絞合屏蔽電纜，有時(shí)需要單獨(dú)屏蔽。
- 高電平電源線應(yīng)穿鋼管敷設(shè)。
- 多點(diǎn)接地的音頻線或電源線需采用屏蔽線。
- 低頻儀表可采用單芯、單屏蔽導(dǎo)線。其傳輸中等信號(hào)電平并有良好接地系統(tǒng)時(shí)，效果比較好。
——————廈門泰尼電氣有限公司———————————
*所有備件的質(zhì)保期均為1年，經(jīng)過專業(yè)測(cè)試認(rèn)證。
*如果您需要訂購產(chǎn)品超過1件，請(qǐng)與我們，我們可以為您提供折扣。
*我們僅采用快遞方式遞送備件。（順豐）
*如果您發(fā)現(xiàn)其他供貨商為相同產(chǎn)品提供更為低廉的價(jià)格，我們也愿意參照其價(jià)格向您提供進(jìn)一步的折扣。
如果還有其他任何問題，請(qǐng)隨時(shí)與我們。
*請(qǐng)讓我們知道您有任何，備品，備件，的需要，我們可以給您進(jìn)一步的援助，我們等候您的詢盤。
————————廈門泰尼電氣有限公司———————————————
：小劉
訂購：
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公司地址：廈門海滄街道濱湖一里7號(hào)2008室
IC697BEM761
IC697BEM761
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