Low noise, fast, quad universal filter building block.

噪音低，速度快，四普及过滤积木。

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The fundamental of current feedback amplifiers(CFA) has been introduced. A new universal filter with three inputs and single output using four CFAs and a few of resistors and capacitors is presented.

本文介绍了电流反馈放大器（CFA）的基本原理，用四个CFA和几个电阻、电容设计了一种三输入单输出的新的通用滤波器。

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I have used Universal feed Parser several times as a filter tool to go from arbitrary feeds to RSS 1.0.

我曾经多次使用Universal Feed Parser作为一种过滤器工具，将任意的消息包转化成rss 1.0。

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The immediate support of these major figures, who offered universal praise for the Palins' actions after learning their daughter was pregnant, provides the filter through which conservative Christian voters will process the development. iReport.com: Were you married at a young age?

CNN: Evangelicals rally behind Palin after pregnancy news