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相关概念视频

Full wave rectifier01:22

Full wave rectifier

1.3K
A full-wave rectifier is a device that converts alternating current (AC) to direct current (DC) and is more efficient than its half-wave counterpart. It typically includes a center-tapped transformer, two diodes, and a load resistor. The secondary winding of the transformer is divided to provide two equal voltages of opposite polarities, which is the pivotal element of full-wave rectification.
1.3K
Bridge rectifier01:24

Bridge rectifier

678
The bridge rectifier is essential in electronics for efficiently converting alternating current (AC) to direct current (DC). Comprised of four diodes configured in a bridge layout, this rectifier effectively processes both the positive and negative halves of the AC waveform, making it superior to half-wave and full-wave center-tapped rectifiers in terms of voltage regulation and output stability.
Operationally, the bridge rectifier allows current flow through two of its diodes during each...
678
Half wave rectifier01:20

Half wave rectifier

1.2K
A half-wave rectifier is a fundamental circuit in electronics, designed to convert alternating current (AC) voltage into a unidirectional voltage. It utilizes the simplest form of diode rectification, where the circuit comprises a single diode in series with a load resistor and an AC power source.
1.2K
Reducing Line Loss01:18

Reducing Line Loss

173
In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
173
Voltage Doubler Circuit01:23

Voltage Doubler Circuit

655
A voltage doubler circuit integrates two main components: a clamping section and a rectifier section. The clamping section consists of a capacitor (C1) and a diode (D1), whereas the rectifier section is equipped with another diode (D2) and capacitor (C2). This circuit produces an output voltage with twice the amplitude of the sinusoidal input voltage.
655
Rapidly Varying Flow01:24

Rapidly Varying Flow

97
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
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相关实验视频

Updated: Jul 19, 2025

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump
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A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump

Published on: June 1, 2022

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通过多相纠正,减少反复的流量波动.

Gürhan Özkayar1, Zhilin Wang1, Joost Lötters1,2

  • 1Department of Precision and Microsystems Engineering, Delft University of Technology, 2628 CD Delft, The Netherlands.

Sensors (Basel, Switzerland)
|August 12, 2023
PubMed
概括

使用并行压电微的多相整形显著减少了流动. 这种方法提高了微流体设备中的稳定流体流动,这对于芯片上的实验室应用至关重要.

关键词:
流动的波纹波动的波纹.流体纠正是流体的纠正.这是一个微型.多相整流器是一个多相整流器.交换式的交换式可以使用.

更多相关视频

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
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Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels

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High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition
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High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

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相关实验视频

Last Updated: Jul 19, 2025

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump
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Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
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High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition
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科学领域:

  • 微流体学 微流体学
  • 生物医学工程 生物医学工程
  • 机械工程 机械工程

背景情况:

  • 互旋压电微是缩小微流体系统的关键,包括芯片上的器官.
  • 这些中的流量波纹会导致流体的不稳定输送,特别是在低流速 (<50μL/分钟) 的情况下.
  • 传统的用于减少波纹的阻尼器是取决于频率的,这限制了它们的有效性.

研究的目的:

  • 调查多相整形,以最大限度地减少压电微中的流动波纹.
  • 通过将多个与相移波形并行连接来评估波纹减少效率.
  • 引入和验证用于量化流量质量的指标.

主要方法:

  • 连接压电微并行与相差 (2π/n) 进行多相整化.
  • 使用特定频率的交替电压波形的调动.
  • 引入和测量流体波纹因子 (RFfl.) 为了量化流量稳定性.
  • 用最多四个来实验验证该方法.

主要成果:

  • 多相整形显著降低了流体波纹因子 (RFfl.) 超过90%的三相整形与单相相整形相比.
  • 在2-60μL/分钟流速范围内观察到有效的波纹减少.
  • 开发了分析方程,以估计平行配置的流体波纹因子.
  • 对于多达四个并行的系统,已经取得了实验确认.

结论:

  • 多相整流是一种有效的策略,用于在低流速下实现平流电微的稳定流量.
  • 开发的分析框架允许设计用于反转的无频流体整流器.
  • 这种方法为改善微流体应用中的流量控制提供了一个可扩展的解决方案.