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相关概念视频

Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

843
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
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.
843
Capacitor With A Dielectric01:18

Capacitor With A Dielectric

4.0K
Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
4.0K
MOS Capacitor01:25

MOS Capacitor

853
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
853
Equivalent Capacitance01:19

Equivalent Capacitance

363
From the study of resistive circuits, it is understood that employing a series-parallel combination serves as an effective strategy for simplifying circuits. Capacitors can be arranged within a circuit in one of two ways: a series configuration or a parallel configuration. The way these capacitors are connected to a battery will influence both the potential drop across each individual capacitor and the size of the charge that each capacitor can store. This is determined by the specific type of...
363
Series and Parallel Capacitors01:14

Series and Parallel Capacitors

4.8K
Capacitors, fundamental components in electronic circuits, can be connected in series and/or parallel configurations. Each configuration has different impacts on the overall behavior of the circuit.
First, consider capacitors connected in series to a battery. In this configuration, the plate connected to the battery's positive terminal develops a positive charge, while the plate attached to the negative terminal becomes negatively charged. An equal magnitude of charge is induced on the...
4.8K
Power Factor Correction01:20

Power Factor Correction

214
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
214

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相关实验视频

Updated: Jul 25, 2025

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
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具有加强接口的结构伪电容器,以提高多功能效率.

Lulu Yao1, Kai Zheng2, Nandu Koripally2

  • 1Materials Science Engineering Program, University of California San Diego, La Jolla, CA 92093, USA.

Science advances
|June 23, 2023
PubMed
概括
此摘要是机器生成的。

研究人员通过加强碳纤维织物和设计渐变聚合物电解质,开发了先进的结构超级电容器. 这种集成的储能和承载功能实现了高性能和耐用性,在模型船体中得到了证明.

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Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique
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科学领域:

  • 材料科学 材料科学 材料科学
  • 电化学 电化学 电化学
  • 机械工程 机械工程

背景情况:

  • 结构超级电容器提供集成的储能和承载能力,有望带来重量和安全方面的好处.
  • 目前的局限性包括实现高能量密度,同时保持结构完整.

研究的目的:

  • 通过接口工程来提高结构超级电容器的多功能效率.
  • 开发具有更好的储能和机械性能的先进结构超级电容器.

主要方法:

  • 用氧化还原聚合物和减少的氧化石墨烯涂层碳纤维织物,以创建增强的结构电极.
  • 设计一个梯度固体聚合物电解质,以优化离子导电性和机械强度.
  • 在现场进行电化学-机械测量,以评估设备的耐用性.

主要成果:

  • 加强的电极表现出增强的伪电容容量和拉伸强度.
  • 梯度电解质设计促进了高性能,与单功能超级电容器相匹配.
  • 在机械负荷下证明了设备的耐用性,并在模型船体中成功应用.

结论:

  • 接口工程策略成功地提高了结构超级电容器的多功能效率.
  • 开发的结构超级电容器为轻量化,高性能储能解决方案提供了一个有前途的途径.
  • 储能和结构功能的整合对于实际应用来说是可行的和有效的.