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Forum 你有關於测试测量技術的問題嗎?請向我們這方面的專家管立虹發問!
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  • Replies 4 replies
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  • test
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  • 测试测量
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  • lecroy
Related

你有關於测试测量技術的問題嗎?請向我們這方面的專家管立虹發問!

Former Member
Former Member over 13 years ago

有關於测试测量技術的問題, 請在這裡提出問題!

image

 

管立虹

立虹是来自LeCroy的目录销售经理。他已经在测试测量行业工作了8年。在加入LeCroy之前,立虹在示波器行业有过数年的经验。在技术支持以及产品战略上颇有资历.


 

如果你還沒有在element14註冊,
請在這裡註冊或在這裡登錄,
方可向專家提問!

 


請按"reply"(回复)
之後提出你的問題!

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  • huayuliang
    huayuliang over 13 years ago

    您好,请问如何使用示波器正确测量直流电源的纹波?尤其是开关电源?

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  • Former Member
    Former Member over 12 years ago in reply to huayuliang

    您好!示波器能精确测量电源纹波并进一步分析纹波中的成份。对于开头电源和功率器件,我们也有成熟的方案可以选择。可以到以下链接中去了解详细的测试方案介绍,相信对你会有帮助。

    linkage:

    http://www.element14.com/community/docs/DOC-41056/l/力科电源方案lecroy-power-solutionpdf

     

    这是美国力科公司在Element14上的社区,里面有各类技术文档,以做参考。

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  • Former Member
    Former Member over 9 years ago

    考 试 答 案

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  • Former Member
    Former Member over 9 years ago in reply to huayuliang

    以20M示波器帶寬為限制標準,電壓設為PK-PK(也有測有效值的),去除示波器控頭上的夾子與地線(因為這個本身的夾子與地線會形成環路,像一個天線接收雜訊,引入一些不必要的雜訊),使用接地環(不使用接地環也可以,不過要考慮其產生的誤差),在探頭上並聯一個10UF電解電容與一個0.1UF瓷片電容,用示波器的探針直接進行測試;如果示波器探頭不是直接接觸輸出點,應該用雙絞線,或者50Ω同軸電纜方式測量。

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