| 基于光电耦合器的线性隔离方法及电路 |
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| 引用本文： | 叶克江.基于光电耦合器的线性隔离方法及电路[J].现代电子技术,2011,34(3):188-190. |
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| 作者姓名： | 叶克江 |
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| 作者单位： | 广东外语艺术职业学院,广东,广州,510640 |
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| 摘 要： | 利用普通光电耦合器和常用运算放大器设计一种低成本、高线性度的模拟信号隔离电路.提出了利用负反馈改善输出信号线性的新思路.该电路抛弃了传统的在输入端使用隔离电源和运算放大器跟踪补偿的方法,而是使用输出信号对输入电流进行反馈补偿.尤其适合高压模拟信号输入的场合.该电路线性范围宽,可以根据不同的使用条件调节线性范围,线性度可...
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| 关 键 词： | 光电耦合器 负反馈 线性隔离 模拟信号 |
New Method of Linear Isolation Based on Ordinary Optocouplers |
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| YE Ke-jiang.New Method of Linear Isolation Based on Ordinary Optocouplers[J].Modern Electronic Technique,2011,34(3):188-190. |
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| Authors: | YE Ke-jiang |
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| Affiliation: | YE Ke-jiang(Guangdong Teacher′s College of Foreign Language and Arts,Guangzhou 510640,China) |
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| Abstract: | A low-cost analog signal isolation circuit with high-linearity is designed by using ordinary optocouplers and commonly-used operational amplifiers.A new idea of improving output signal linearity is put forward by the use of negative feedback.The method of using the traditional isolated power supply and operational amplifiers at the input end to carry out a tracking compensation is given up,but the output signal is used to implement the feedback compensation for the input current.It particularly fits the occ... |
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| Keywords: | optocoupler negative feedback linear isolation analog signal |
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