ACTIVE TWIN-T NOTCH FILTER,

被引：0
|
作者：
ZINNIKER R
机构：
来源：
| 1971年 / 24卷 / 04期
关键词：
ACTIVE FILTERS - NOTCH FILTERS - RADIO FILTERS - SUPPRESSION FILTERS - TWIN-T FIBBERS;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An active twin-T notch filter with feedback by a voltage controlled voltage source is presented and its transfer function is discussed. A simple relation between the feedback parameter and the 3-dB step bandwidth is given. The amplitude response in the step band is described by an approximation formula. The tests with a laboratory- type line-frequency stop filter show that the idealized theory describes the real circuit quite well. With a 3-dB stop bandwidth of 10 Hz the line frequency is rejected by at least 40 dB.
引用
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页码：207 / 208
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