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Graphical and Analytic Representation of Sinusoids01:20

Graphical and Analytic Representation of Sinusoids

882
Analyzing two sinusoidal voltages with equal amplitude and period but different phases on an oscilloscope, an instrument used to display and analyze waveforms, involves a three-step process.
The first step is measuring the peak-to-peak value, which is twice the amplitude of the sinusoid. This provides information about the maximum voltage swing of the waveform.
Secondly, the period and angular frequency are determined. The period is the time taken for one complete cycle of the waveform, while...
882
Sinusoidal Sources01:18

Sinusoidal Sources

1.0K
Direct current (DC) refers to an electric current that flows in a single direction, maintaining a constant polarity. This is in contrast to alternating current (AC), which periodically changes its direction and magnitude. AC forms the backbone of modern electricity transmission and distribution systems due to its efficient long-distance transmission capabilities.
In homes, the power supplies use sinusoidal sources to provide electricity. These sources generate a voltage that varies sinusoidally...
1.0K
Phasors01:12

Phasors

1.1K
Phasors are a powerful mathematical tool used to analyze alternating current (AC) circuits. They provide a complex number representation of sinusoids, with the magnitude of the phasor equating to the amplitude of the sinusoid and the angle of the phasor representing the phase measured from the positive x-axis.
One of the significant benefits of using phasors is that they simplify the analysis of AC circuits by eliminating the time dependence of the current and voltage. This transformation...
1.1K
Phasor Arithmetics01:13

Phasor Arithmetics

719
Phasors and their corresponding sinusoids are interrelated, offering unique insights into the behavior of alternating current (AC) circuits. One way to understand this relationship is through the operations of differentiation and integration in both the time and phasor domains.
When the derivative of a sinusoid is taken in the time domain, it transforms into its corresponding phasor multiplied by j-omega (jω) in the phasor domain, where j is the imaginary unit, and ω is the angular...
719
Superposition Theorem for AC Circuits01:13

Superposition Theorem for AC Circuits

1.7K
Consider encountering a circuit in a steady state where all its inputs are sinusoidal, yet they do not all possess the same frequency. Such a circuit is not classified as an alternating current (AC) circuit, and consequently, its currents and voltages will not exhibit sinusoidal behavior. However, this circuit can be analyzed using the principle of superposition.
The principle of superposition stipulates that the output of a linear circuit with several concurrent inputs is equivalent to the...
1.7K
Quantum Numbers02:43

Quantum Numbers

48.9K
It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
48.9K

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相关实验视频

Updated: Jan 11, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

10.2K

具有SINIS结构的量子电路

Mikhail Tarasov1, Mikhail Fominskii1, Aleksandra Gunbina1

  • 1V. Kotelnikov Institute of Radio Engineering and Electronics RAS, Moscow, Russia.

Beilstein journal of nanotechnology
|November 12, 2025
PubMed
概括

超导体-绝缘体-普通金属-绝缘体-超导体 (SINIS) 道连接是冷设备的关键. 优化的SINIS阵列实现了检测微波辐射的高响应性,这对于无线电天文学应用至关重要.

关键词:
大望远镜的高度天文台在NIS道的交叉点.电子冷却器 电子冷却器微型和纳米技术的应用.微波探测器 微波探测器超导道连接点 超导道连接点

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相关实验视频

Last Updated: Jan 11, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Generation and Coherent Control of Pulsed Quantum Frequency Combs

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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

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科学领域:

  • 低温制造器件的制冷制造器件是什么
  • 超导电子设备中的超导体.
  • 微波检测 微波检测 微波检测 微波检测

背景情况:

  • 超导体-绝缘体-普通金属-绝缘体-超导体 (SINIS) 道连接是先进冷应用中的基本组件.
  • 这些设备用于微波探测器,电子冷却器,初级温度计和阿哈罗诺夫-博姆干扰仪.
  • SINIS设备的制造和测量在低至100mK的温度下进行.

研究的目的:

  • 优化SINIS道连接结构,以提高冷设备的灵敏度和响应能力.
  • 开发和测试专门用于用于射电天文学的90 GHz辐射检测的SINIS阵列.
  • 为了评估SINIS接收器在低温下的冷静装置中的性能.

主要方法:

  • 使用多兰型和曼哈顿型阴影蒸发和磁铁子喷射制造SINIS结构.
  • 吸收器悬浮在基板上方,以提高最终的灵敏度.
  • 使用黑体辐射源,带通波器和IMPATT二极管辐射源测试SINIS阵列.

主要成果:

  • 在350 GHz (72000 A/W) 达到每光子高达30个电子的响应能力和高达3.9 × 10^9 V/W的电压响应能力.
  • 设计的SINIS阵列在90 GHz辐射检测中显示噪声等效功率低于10^-16 W·Hz^-1/2.
  • 在BTA望远镜的纳斯密斯焦点260mK的3He冷机中成功安装和测试了一个SINIS接收器.

结论:

  • 优化的SINIS道连接为冷应用提供了显著的灵敏度和响应能力的改进.
  • 开发的SINIS阵列适合检测微弱的微波信号,特别是用于90 GHz的无线电天文学.
  • 在BTA望远镜的实验设置和测试证实了SINIS设备在天文观测方面的潜力.