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相关概念视频

Power in an AC Circuit01:26

Power in an AC Circuit

2.3K
In a DC circuit, the power consumed is simply the product of the DC voltage times the DC current, given in watts. However, the power consumed for AC circuits with reactive components is calculated differently. Since electrical power is the "rate" at which energy is used in a circuit, all electrical and electronic components and devices have a safe operating range for electrical power.
In a DC circuit, there is no sinusoidal waveform associated with the supply; the voltages and currents are...
2.3K
Power in a Three-Phase Circuit01:15

Power in a Three-Phase Circuit

633
Three-phase systems have two configurations: the wye and delta. A star configuration can be three or four wires; in a delta configuration, the components are connected in a closed loop. Instantaneous power refers to the power value at a precise moment, and in a balanced three-phase system, it is constant. This is because the sum of the instantaneous powers in the three phases remains steady over time, despite individual fluctuations, due to the symmetry and phase relationship. The total...
633
Power System Three-Phase Short Circuits01:21

Power System Three-Phase Short Circuits

574
Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...
574
Power Dissipated in a Circuit: Problem Solving01:15

Power Dissipated in a Circuit: Problem Solving

1.6K
The equivalent resistance of a combination of resistors depends on their values and how they are connected.
The simplest combinations of resistors are series and parallel connections. In a series circuit, the first resistor's output current flows into the second resistor's input; therefore, each resistor's current is the same. Thus, the equivalent resistance is the algebraic sum of the resistances. The current through the circuit can be found from Ohm's law and is equal to the...
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Complementary DNA01:44

Complementary DNA

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Overview
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Power Distribution in Three-phase and Single Phase Circuits01:17

Power Distribution in Three-phase and Single Phase Circuits

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Power distribution within electrical circuits is a foundational aspect of residential and industrial energy systems. While single-phase power is common in residential settings, three-phase power is the standard for industrial environments with heavy machinery. Each system is different and has advantages, and it's crucial to understand the underlying principles of power distribution and material efficiency.
Single-Phase Power Distribution:
Single-phase circuits are typical in household settings;...
659

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Establishing In Situ Closed Circuit Perfusion of Lower Abdominal Organs and Hind Limbs in Mice
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超低功率的有机互补电路

Hagen Klauk1, Ute Zschieschang, Jens Pflaum

  • 1Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany. h.klauk@fkf.mpg.de

Nature
|February 16, 2007
PubMed
概括
此摘要是机器生成的。

研究人员使用自组装单层和空气稳定半导体开发了低功耗有机电路. 这些电路使便携式显示器和传感器等电池驱动的电子设备能够克服以前的高功耗问题.

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科学领域:

  • 有机电子学有机电子学
  • 材料科学是一种材料科学.
  • 半导体设备物理学 半导体设备物理

背景情况:

  • 低温可加工的有机半导体在各种基板上提供了灵活电子的潜力.
  • 传统有机电路的高功耗限制了它们在电池驱动应用中的使用.

研究的目的:

  • 为了证明一个有机电路,显著降低了功耗.
  • 为了使有机电子在便携式设备和传感器网络中的实际应用.

主要方法:

  • 使用自组装单层作为门介电.
  • 使用的稳定于空气的有机半导体:五烯和六甲铜甲氨酸 (F16CuPc).
  • 制造的补充电路 (p通道和n通道晶体管).

主要成果:

  • 实现了非常低的静态电流,低于每逻辑门100 pA.
  • 演示了互补的逆变器,NAND门和环振荡器.
  • 在低供应电压 (1.53V) 运行的电路,静电耗低于每逻辑门1nW.

结论:

  • 开发的有机电路适用于低功率的电池系统.
  • 潜在的应用包括便携式显示器,大面积传感器网络和增强的射频识别标签.