相关实验视频
Updated: Jun 6, 2025

Scanning-probe Single-electron Capacitance Spectroscopy
Published on: July 30, 2013
一个数字四臂桥,用于比较电阻与电容
Yicheng Wang1, Stephan Schlamminger1
1National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, United States of America.
一个新的数字四臂桥精确地比较电阻和电容. 这个数字桥通过在数字环境中模仿古典方法来实现高精度.
科学领域:
- 电气工程 电气工程
- 计量学 计量学 计量学
- 数字仪器仪表数字仪器仪表
背景情况:
- 经典的四旋桥对于精确的电阻和电容比较至关重要.
- 数字化实现在精度和自动化方面提供了潜在的优势.
研究的目的:
- 开发和演示一个数字四臂桥,用于阻力-电容比较.
- 评估数字桥的精度和性能.
主要方法:
- 开发了一个数字四臂桥架构.
- 实现了三个数字平衡阶段:源,探测器和主平衡.
- 利用相关性来降低源电压的精度要求.
主要成果:
- 展示了一个数字四臂桥,能够比较电阻和电容.
- 在1592Hz的100kΩ电阻和1nF电容的比较中,获得了5 × 10−9 (k=1) 的综合标准不确定性.
- 由于相关性,展示了源电压精度要求的降低.
结论:
- 数字四臂桥成功地模仿了经典的四臂桥功能.
- 开发的数字桥提供了高精度的电气组件比较.
- 这种数字化方法代表了精密测量仪器仪表的重大进步.
更多相关视频
13:56Modeling Biological Membranes with Circuit Boards and Measuring Electrical Signals in Axons: Student Laboratory Exercises
Published on: January 18, 2011
11:44Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
Published on: August 15, 2014
相关概念视频
Equivalent Capacitance
The following strategies are adopted to calculate...
Wheatstone Bridge
Thus, for accurate resistance measurements, a...
Equivalent Resistance
Design Example: Capacitance Multiplier Circuit
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
Design Example: Strain Gauge Bridge or Wheatstone Bridge
Bridge rectifier
Operationally, the bridge rectifier allows current flow through two of its diodes during each...