### 电气工程代写|数字电路代写digital circuit代考|ECEN6003

statistics-lab™ 为您的留学生涯保驾护航 在代写数字电路digital circuit方面已经树立了自己的口碑, 保证靠谱, 高质且原创的统计Statistics代写服务。我们的专家在代写数字电路digital circuit代写方面经验极为丰富，各种代写数字电路digital circuit相关的作业也就用不着说。

• Statistical Inference 统计推断
• Statistical Computing 统计计算
• Advanced Probability Theory 高等概率论
• Advanced Mathematical Statistics 高等数理统计学
• (Generalized) Linear Models 广义线性模型
• Statistical Machine Learning 统计机器学习
• Longitudinal Data Analysis 纵向数据分析
• Foundations of Data Science 数据科学基础

## 电气工程代写|数字电路代写digital circuit代考|INVERTING AMPLIFIER

The inverting amplifier configuration shown in Figure $1.11$ amplifies and inverts the input signal in the linear region of operation. The circuit consists of a resistor $R_S$ in series with the voltage source $v_i$ connected to the inverting input of the OpAmp. The non-inverting input of the OpAmp is short circuited to ground (common). A resistor $R_f$ is connected to the output and provides a negative feedback path to the inverting input terminal. ${ }^{12}$ Because the output resistance of the OpAmp is nearly zero, the output voltage $v_o$ will not depend on the current that might be supplied to a load resistor connected between the output and ground.

For most OpAmps, it is appropriate to assume that their characteristics are approximated closely by the ideal OpAmp model of Section 1.2. Therefore, analysis of the inverting amplifier can proceed using the voltage and current constraints of Equations ( $1.5 \mathrm{a})$ and ( $1.5 \mathrm{~b})$,

Node 1 is said to be a virtual ground due to the virtual short circuit between the inverting and non-inverting terminals (which is grounded) as defined by the voltage constraint,
$$v_1=v_2=0 .$$
The node voltage method of analysis is applied at node 1 ,
$$0=\frac{v_i-v_1}{R_S}+\frac{v_0-v_1}{R_f}+i_1 .$$
By applying Equation (1.25), obtained from the virtual short circuit, and the constraint on the current $i_1$ as defined in Equation (1.5b), Equation (1.26) is simplified to
$$0=\frac{v_i}{R_S}+\frac{v_o}{R_f} .$$
Solving for the voltage gain, $v_o / v_i$,
$$\frac{v_o}{v_i}=-\frac{R_f}{R_S}$$
Notice that the voltage gain is dependent only on the ratio of the resistors external to the OpAmp, $R_f$ and $R_S$. The amplifier increases the amplitude of the input signal by this ratio. The negative sign in the voltage gain indicates an inversion in the signal.
The output voltage is also constrained by the supply voltages $V_{C C}$ and $-V_{C C}$,
$$\left|v_o\right|<V_{C C} \text {. }$$
Using Equation (1.28), the maximum resistor ratio $R_f / R_s$ for a given input voltage $v_i$ is
$$\frac{R_f}{R_S}<\left|\frac{V_{C C}}{v_i}\right| .$$

## 电气工程代写|数字电路代写digital circuit代考|NON-INVERTING AMPLIFIER

A non-inverting amplifier is shown in Figure $1.15$ where the source is represented by $v_S$ and a series resistance $R_S$.

The analysis of the non-inverting amplifier in Figure $1.15$ assumes an ideal OpAmp operating within its linear region. The voltage and current constraints at the input to the OpAmp yield the voltage at node 1 ,
$$v_1=v_2=v_s,$$

since $i_1=i_2=0$. Using the node voltage method of analysis, the sum of the currents flowing into node 1 is,
$$0=\frac{0-v_1}{R_G}+\frac{v_o-v_1}{R_f} .$$
Solving for the output voltage $v_o$ using the voltage constraints, $v_1=v_S$
$$v_o=v_i\left(1+\frac{R_f}{R_G}\right) .$$
The gain of the non-inverting amplifier is,
$$\frac{v_o}{v_i}=1+\frac{R_f}{R_G} .$$
Unlike the inverting amplifier, the non-inverting amplifier gain is positive. Therefore, the output and input signals are ideally in phase. The amplifier will operate in its linear region when,
$$1+\frac{R_f}{R_G}<\left|\frac{V_{C C}}{n_s}\right| .$$
Note that, like the inverting amplifier, the gain is a function of the external resistors $R_f$ and $R_G$.

## 电气工程代写|数字电路代写digital circuit代考|INVERTING AMPLIFIER

$$v_1=v_2=0 .$$

$$0=\frac{v_i-v_1}{R_S}+\frac{v_0-v_1}{R_f}+i_1 .$$

$$0=\frac{v_i}{R_S}+\frac{v_o}{R_f} .$$

$$\frac{v_o}{v_i}=-\frac{R_f}{R_S}$$

$$\left|v_o\right|<V_{C C} .$$

## 电气工程代写|数字电路代写digital circuit代考|NON-INVERTING AMPLIFIER

$$v_1=v_2=v_s,$$

$$0=\frac{0-v_1}{R_G}+\frac{v_o-v_1}{R_f} .$$

$$v_o=v_i\left(1+\frac{R_f}{R_G}\right)$$

$$\frac{v_o}{v_i}=1+\frac{R_f}{R_G} .$$

$$1+\frac{R_f}{R_G}<\left|\frac{V_{C C}}{n_s}\right| .$$

## 有限元方法代写

tatistics-lab作为专业的留学生服务机构，多年来已为美国、英国、加拿大、澳洲等留学热门地的学生提供专业的学术服务，包括但不限于Essay代写，Assignment代写，Dissertation代写，Report代写，小组作业代写，Proposal代写，Paper代写，Presentation代写，计算机作业代写，论文修改和润色，网课代做，exam代考等等。写作范围涵盖高中，本科，研究生等海外留学全阶段，辐射金融，经济学，会计学，审计学，管理学等全球99%专业科目。写作团队既有专业英语母语作者，也有海外名校硕博留学生，每位写作老师都拥有过硬的语言能力，专业的学科背景和学术写作经验。我们承诺100%原创，100%专业，100%准时，100%满意。

## MATLAB代写

MATLAB 是一种用于技术计算的高性能语言。它将计算、可视化和编程集成在一个易于使用的环境中，其中问题和解决方案以熟悉的数学符号表示。典型用途包括：数学和计算算法开发建模、仿真和原型制作数据分析、探索和可视化科学和工程图形应用程序开发，包括图形用户界面构建MATLAB 是一个交互式系统，其基本数据元素是一个不需要维度的数组。这使您可以解决许多技术计算问题，尤其是那些具有矩阵和向量公式的问题，而只需用 C 或 Fortran 等标量非交互式语言编写程序所需的时间的一小部分。MATLAB 名称代表矩阵实验室。MATLAB 最初的编写目的是提供对由 LINPACK 和 EISPACK 项目开发的矩阵软件的轻松访问，这两个项目共同代表了矩阵计算软件的最新技术。MATLAB 经过多年的发展，得到了许多用户的投入。在大学环境中，它是数学、工程和科学入门和高级课程的标准教学工具。在工业领域，MATLAB 是高效研究、开发和分析的首选工具。MATLAB 具有一系列称为工具箱的特定于应用程序的解决方案。对于大多数 MATLAB 用户来说非常重要，工具箱允许您学习应用专业技术。工具箱是 MATLAB 函数（M 文件）的综合集合，可扩展 MATLAB 环境以解决特定类别的问题。可用工具箱的领域包括信号处理、控制系统、神经网络、模糊逻辑、小波、仿真等。