Can anyone give me some guidance on how to learn modular electricity, I really can t do anything abo

Hehe, I'm learning now.

I enjoyed it so much that it was a pleasure to learn.

So interest is important.

Don't take it as a burden, modular electricity is very useful.

For self-study, it is recommended to use the textbook of the teacher Tong Shibai.

Combined with the teaching materials of Mr. Kang Huaguang.

Both are very good textbooks.

Our teacher said that Teacher Tong's is more suitable for self-study.

But you have to have the basis of the circuit ...

If not, it's better to learn circuit analysis.

The textbook is called "Circuits".

The logic of modular electricity is like this, first talk about semiconductor devices, BJT, MOS, JFET, etc., they are equivalent to the pipe that can realize the amplification of water flow, you must first know the principle of this pipe amplification signal.

Secondly, let's talk about the general model of amplification, h-parameters, y-parameters, z-parameters, and so on.

These are to tell you that there will be different small signal models for different quantities to focus on at the input and output ports, and these models will be crucial for later AC analysis. Different devices can be applied to different models, and the same circuit can also be applied to different parametric models, and the conclusion is the same.

Introduction

Voice. "Analog Electronic Technology (21st Century Electrical Engineering and Automation Planning Textbook for Colleges and Universities)" (authors Chen Yongqiang, Wei Jincheng, Wu Changdong) includes potentials and their analysis methods.

There are 10 chapters on diodes and their basic circuits, transistors and their amplification circuits, field effect transistors and their amplification circuits, integrated operational amplifiers, signal operation and processing circuits, negative feedback amplification circuits, power amplification circuits, sine wave oscillation circuits and low-power DC regulated power supplies. There are a large number of examples, reflection questions, and exercises in the book.

Analog Electronic Technology (21st Century Electrical Engineering and Automation Planning Textbook for Colleges and Universities) can be used as a textbook or teaching reference book for basic courses of analog electronic technology in electrical information and related majors in colleges and universities, and can also be used as a reference for engineering and technical personnel in relevant majors.

Because in the higher education system, modular electricity is the first engineering course involving semiconductors, and it is a technical enlightenment textbook. It is different from circuits, which are introductory electrical courses based on the basics of ordinary physics, born in the second industrial revolution.

From triboelectric to voltaic batteries, a host of physicists such as Oersted, Faraday, Ampere Maxwell, and others have built a whole new branch of physics: electromagnetism, which exists side by side with traditional Newtonian mechanics and Kelvin thermodynamics.

Therefore, the circuit is largely an extension of physics, which is logical to learn and has mathematical theorems to rely on. Physics courses are set up in high school, so it is easy to learn electrical circuits in college.

Analog electronics is a purely technical discipline that was born along with semiconductor technology. The known circuits, topologies, and application methods are all purely technical, and more of a collection of work notes.

It records a series of analog electronic technology achievements invented by humans in the 100 years of the 20th century. Obviously, as an enlightenment reading in the direction of semiconductors, the modular electricity textbook is unqualified. Without introducing the development of the discipline, the technical background, and the application scenarios, directly listing the technical achievements is basically for students to memorize all the content.

Since modular electricity is a discipline based on semiconductor technology, many textbooks begin to talk about semiconductor physics, and semiconductor physics itself is relatively abstract, so that many beginners have a high interest in learning modular electricity, and as a result, they encounter incomprehensible knowledge when they open the first chapter of the book.

Not to mention the characteristic curves of components, calculation formulas and their important parameters, and the subsequent chapters are based on the components in the previous chapters, so this seemingly reasonable chapter arrangement eventually makes most beginners repeatedly hit and unable to continue learning.

Read the book well and listen carefully.

Choose 1 good reference book

Do more practice and do it often

Analog electronic circuits don't look at the usual difficulty, the exam is very simple. I think if you want to learn this course well, of course, it won't take you a few months, if you need to spend a day or two or even a few hours to pass the 60 points in the exam, the plan is as follows:

At this time, you said that it must be too late to read the book, and there is no need. Be sure to find the exam papers of the last few years, this is the necessary tool for you to take the exam. Find someone who can learn this lesson or understand it to a little bit, and let him tell you which big question corresponds to which chapter (at this time, focus on the big question first, basically the chapter corresponding to the big question is independent, and there will be no comprehensive several chapters of the exam question), and then it will be up to you to break it individually.

When you go to analyze the exam questions, you will find that the exam questions every year use those formulas, and the solution is basically patterned, so you can carefully read two or three exam questions in each chapter, and don't do it at this time, just what it is.

1) The amplifier circuit chapter is the focus, direct flow path, AC path, and AC equivalent circuit, co-base, co-ejection, co-set amplifier to calculate voltage gain, input, output resistance, these are the key points to spend more time, it is best to find someone to tell you faster. It takes almost 2 hours to get the big topic of this chapter done.

2) The second major difficulty is the feedback of the amplification circuit, the test knowledge points are also very fixed, the basic test is the method of judging positive and negative feedback, the magnification formula of the negative feedback amplification circuit, the influence of the four configurations on the amplification performance of the amplification circuit, the feedback coefficient, etc. It takes 1 to 2 hours to get it done.

3) The previous chapter on semiconductor devices such as diodes, transistors, and field effect transistors are all basic, and this part should be read first, because the basic knowledge here will be used later. It doesn't take much time.

4) The characteristics of various voltage comparators, the analysis of threshold voltages, the formulas of basic operation circuits, the drawing of rectangular wave and triangular wave circuits, DC stable power supply, differential amplification circuits, and frequency response can be completed in one hour very quickly.

Digital circuits I'll tell you how to learn:

The most important thing in a digital circuit is to know what is 1 and what is 0, this is just two levels, understand what it means and you will be half counted.

Understand the conversion of various decimal systems, base, decimal, hexadecimal, etc.

Counters, flip-flops, digital circuits are designed with them.

Nothing else I've been working for several years, and I basically use these in numbers, which only accounts for a small part of the course, but knowing these is enough for you to go out and eat Anything else is in vain, a waste of time and energy, believe me.

If you want to prepare for the test, you need to learn all the content thoroughly, and the graduate exam must be taken regardless of whether the content is useful or not. However, the focus of the exam is generally on the design of the gate circuit and the design of the counter circuit. In addition, Carnotu also has to be seen, and it is likely to be tested as well.

It depends on the individual. If you just want to ensure that you pass, take a good look at the modular electricity book, the qualitative analysis of the module electricity is a little more important than the quantitative analysis, and try to understand the principles in the book, such as how the micro-variable equivalent circuit diagram comes about, what is the relationship between input and output, why is it like this, and so on. Since your foundation is not good, if you just read a book, you will find that every time you see the derivation part, you will be very entangled, and many times you will skip it directly.

Actually, I don't think it's good to do this, because after reading such a book, you will feel that you just don't have a solid grasp and it's easy to forget. Take a pen and push the formula, the mathematical model in the circuit is not difficult, and you will feel much more solid when you push the formula. If you really don't understand it, then do more questions and try to memorize the formulas and various relationships in the process of doing the questions.

If you want to continue your career in the field of electricity, you must first learn the basics. Secondly, we should exercise our design ability and hands-on ability. Do more exercises on multisim at the back of the book, and play more with multisim and protel.

Design more circuits by yourself, solder circuits by hand, and ask the old-timers around you for advice, they may not have the ability to design circuits, but the ability to detect and correct errors is absolutely first-class. For beginners, many people on the Internet recommend the book "Electronic Design from Scratch", written by Yang Xin, Tsinghua University Press, but I haven't read it, if it's good or not, it's up to you to judge!

The reason why many people just start to learn modular electricity is because it is difficult to mold electricity, because there is too little contact, so they can't adapt to it all at once!

At the beginning of the model electricity textbook, the circuit calculations in it are very vague, and there is no very accurate calculation, so to learn the model electricity well, you need to calculate the parameters of the device. In addition, if the school has the conditions to provide a laboratory, you must do more small things, because sometimes the parameters of the theoretical calculation are feasible, but the actual things are not, at this time, you can constantly change the parameters according to the situation, and then think carefully about why this situation occurs, so that you will learn a lot of things. There is also an advantage to doing more things, because the difference between theory and practice is really big, sometimes the theory is so simple, but when you really want to do it, you will encounter very problems, if you usually do more things, there are problems to detect and modify yourself, then your practical ability will slowly improve!

I'm also learning modular electricity, and I've just finished class. The main thing is to read the textbook, understand the principle, and then do experiments.

Master the structure, working principle and use method of commonly used instruments and meters. Master the test methods of the characteristics and main parameters of commonly used electronic devices, and be able to choose them reasonably. It has the ability to wiring, testing, analyzing faults and analyzing experimental results of general electronic circuits.

Lay a solid foundation for learning computers and digital meters.

Learn the principles, characteristics and main parameters of basic electronic devices and basic amplifier circuits, common analysis and design methods of amplifier circuits and feedback circuits, structure, characteristics, technical indicators, basic connections and typical application circuits of integrated operational amplifiers, and understand the working principles of power amplifiers, sine wave oscillators and DC regulated power supplies. Lay the foundation for students to properly analyze circuits and repair meters.

If you don't have a lot of skills, it's very useful to be in this business, and it's not very useful to be in this business.

There is a use, it is a professional basic course, and it is a professional basic course like circuit principle and digital electricity, and you can read other professional books with it.

It's just those textbooks in China, like the Bible, it's not easy to understand, it doesn't matter if you don't understand, do more questions, look at the solutions in the tutorial book, and you can cope with the exam. Exam-oriented education will always accompany us, do not reject it because we feel useless, and adapt to this system.

In a place where there is a lack of natural science accumulation, and reading engineering, don't ask how good a textbook can be, many times only the author may know what he writes, or he doesn't understand, copy someone else's... Many of the modular electricity are qualitative analysis, which is also convenient for the author to scribble...

In short, study engineering, do more questions, don't get entangled, even the author is not entangled, what are you still entangled?

Analog circuits mainly learn the application of semiconductor discrete devices, and the application of analog integrated circuits based on this.

The main contents include: basic knowledge of semiconductors, semiconductor devices, basic amplifier circuits, multi-stage amplifier circuits, integrated operation amplifier circuits, frequency response of amplifier circuits, feedback in amplifier circuits, signal operation and processing, waveform generation and signal conversion, power amplifier circuits, power supply circuits.

The above is the basic part, and there is a continuation according to the professional focus

In communication and other majors, the continuation of the mode is called high-frequency electronic circuit, which is essentially an analog circuit (that is, an analog circuit under high-frequency conditions), and also includes: resonant power amplifier, sine wave oscillator, amplitude modulation, demodulation and mixing circuit, angle modulation, feedback control and frequency selection network. In fact, there is a continuation in the back, generally known as radio frequency electronic circuits, this field already belongs to microwaves, and needs to be supported by a stronger mathematical foundation, which is rarely involved in general universities (or rather, after learning, more than 99% of people still don't understand).

Automation, electric transmission and other similar majors, the continuation of the modular part of electricity is called power electronics technology, which is essentially analog electronic technology under high-power conditions. Specifically, it includes power semiconductor devices, power semiconductor device driving and protection, AC-DC conversion, DC-DC conversion, DC-AC conversion, AC-AC conversion, resonant soft switching technology and so on.

Analog electronics courses are broad and profound, the most difficult and useful field of electronics, it often takes decades of accumulation, and it is worth a lifetime of dedication.

In our life and production, the importance of electronic products composed of CPU memory and other super-large integrated circuits is self-evident.

The core material that makes them up is semiconductors, and analog electronics learns this semiconductor device and some important circuit principles.

The digital electricity is application-oriented, and the internal binary processing data of electronic products is good, and learning digital electronic technology can better understand the working principle of electronic devices.

For example, an electronic meter is actually an internal oscillation circuit that generates a pulse of a certain frequency, and then counts with a counter, registers, decodes, and finally reaches the LCD screen. After the principle is understood, the rest can be slowly understood.

In these two basic courses, modulus is more difficult to learn, and digital electricity belongs to the technology of the application layer, which is very mature and easy to understand.