| 一种简易微弱信号测试仪的设计 |
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| 引用本文： | 杨尔滨,朱丹平.一种简易微弱信号测试仪的设计[J].上海电力学院学报,1994,10(4):42-48. |
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| 作者姓名： | 杨尔滨 朱丹平 |
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| 作者单位： | 上海电力学院电力工程系
(杨尔滨)，上海电力学院电力工程系(朱丹平) |
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| 摘 要： | 本文研制了一种可用于进行微弱信号检测的小信号测试仪,其基本原理是利用锁定放大器具有窄通带,高灵敏度等特性。在具体电路设计中,对其主要电路部分进行了理论分析和计算,实测结果表明该装置具有较高的准确性,抗干扰性,简易实用等优点。
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| 关 键 词： | 锁定放大器 相位检波器 开关电容滤波 |
| 收稿时间： | 1994/1/12 0:00:00 |
Design of a Simple Detector for Measuring Week Signals |
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| Yang Erbin and Zu Danping.Design of a Simple Detector for Measuring Week Signals[J].Journal of Shanghai University of Electric Power,1994,10(4):42-48. |
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| Authors: | Yang Erbin and Zu Danping |
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| Affiliation: | Department of Electric Power Engineering |
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| Abstract: | This paper developes a small signal detector for week signal detection. It is based on the principle that the band pass of lock in amplifier is extremely narrow and that its sensitivity is very high. In the circuit design. we carried out theoretic analyses and computation on some main parts of the circuit. Actual measuring results show that the detector is more accuracy, more noiseproof and easier to operate. |
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| Keywords: | lock-in amplifier phase detector switched capacitor filter |
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