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相关概念视频

Design Example: Underdamped Parallel RLC Circuit01:17

Design Example: Underdamped Parallel RLC Circuit

268
Consider designing an oscillator circuit, a crucial component in various electronic devices and systems. The objective is to create an oscillator circuit with specific characteristics: a damped natural frequency of 4 kHz and a damping factor of 4 radians per second. To accomplish this, a parallel RLC circuit is employed, known for its ability to sustain oscillations at a resonant frequency. In this case, the damping factor is pivotal in achieving the desired performance.
Starting with a fixed...
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MOSFET Amplifiers01:17

MOSFET Amplifiers

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The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
147
Oscillations In An LC Circuit01:30

Oscillations In An LC Circuit

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An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
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Small-Signal Analysis of MOSFET Amplifiers01:23

Small-Signal Analysis of MOSFET Amplifiers

511
In small-signal analysis, a MOSFET transistor amplifier acts as a linear amplifier when operating in its saturation region. The gate-to-source voltage (VGS) of the MOSFET is the sum of the DC biasing voltage and the small time-varying input signal. This combination sets up the operating point and modulates the drain current (ID) that flows from the drain to the source. When a small AC signal is superimposed on the DC bias voltage at the gate, the instantaneous drain current comprises three...
511
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

714
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.
714
MOSFET01:16

MOSFET

427
The Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) plays a pivotal role in modern electronics thanks to its versatility and efficiency in controlling electrical currents. This device, also known as IGFET, MISFET, and MOSFET, has three main terminals: the Source, Drain, and Gate. MOSFETs are classified into n-channel or p-channel types based on the doping characteristics of their substrate and the source or drain regions.
In an n-MOSFET, the structure includes n-type source and drain...
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相关实验视频

Updated: Jun 9, 2025

Fabrication and Testing of Microfluidic Optomechanical Oscillators
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一个高度线性的超低面积和功率的CMOS电压控制振荡器用于自主微系统.

Javier de Mena Pacheco1, Tomas Palacios2, Marek Hempel3

  • 1IPTC, E.T.S.I. Telecomunicación, Universidad Politécnica de Madrid, 28040 Madrid, Spain.

Micromachines
|October 26, 2024
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种用于智能灰尘系统的新型电压控制振荡器 (VCO). 紧且功率高效的VCO提供线性频率响应,对于在受限制应用中进行精确测量至关重要.

关键词:
这就是VCO VCO.这就是线性线性.智能尘埃是什么意思 智能尘埃是什么意思超低频率超低频率的频率非常低.

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科学领域:

  • 集成电路设计 集成电路设计
  • 微系统工程 微系统工程
  • 传感器技术 传感器技术

背景情况:

  • 电压控制振荡器 (VCO) 对于将模拟信号转换为数字频率至关重要.
  • 设计线性和节能的VCO对于小型化系统来说是一个挑战.
  • 智能尘埃应用需要低功耗,高线性信号转换.

研究的目的:

  • 为功率和面积受限制的智能灰尘系统提出一个新的VCO设计.
  • 为了实现相对于输入电压的线性频率响应.
  • 为了尽量减少电力消耗和物理足迹.

主要方法:

  • 使用65nm互补金属氧化物半导体 (CMOS) 技术进行制造.
  • 设计的重点是尽量减少泄漏电流和峰值电流.
  • 频率范围的表征,功耗和线性.

主要成果:

  • VCO 占据了 592 微米2 的小面积.
  • 在4353Hz的频率范围内运行,功耗超低 (0.3V时4pW).
  • 显示了对输入电压,供应电压和温度的近线性频率响应.

结论:

  • 拟议的VCO符合智能尘埃系统的严格要求.
  • 它的线性响应和低功耗促进了准确和高效的数据采集.
  • 设计允许简单的温度补偿,提高可靠性.