How to learn electronic technology and reduce learning errors

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How to learn electronic technology and reduce learning errors


1. There are many confusions at the beginning of learning.
In the process of learning electronic technology, especially in the initial stage, there will be many confusions. This is very normal, like “can’t always remember” and “have no quick learning method”, but when we can’t treat and handle these correctly When you are confused in the early stage of learning, it will affect normal learning, doubt your own learning effect, and interfere with the learning process. In serious cases, even learning will be abandoned halfway.
  important hint
If you “kill out” these puzzles at an early stage, you can win more time and valuable energy and greatly improve the “price/performance ratio” of learning. In this age of massive information, it is especially important to learn quickly and take fewer detours.
The misunderstandings in the process of learning electronic technology are mainly methodological and comprehensible, and will be improved through a period of study, experience and practice.
2. Learn the mental preparation of electronic technology
When you are learning electronic technology, you should be mentally prepared. At the beginning of your study, you should recognize the difficulties that may arise. For example, the problem of learning methods, the problem of learning objectives, how to deal with difficulties in learning, how much does it take for the whole study? The question of time, the question of which knowledge of electronic technology needs to learn at least, how to test the problem of learning effect, how to deal with the relationship between theoretical study and hands-on practice, the problem of the future of electronic technology industry, the direction of employment after learning electronic technology Questions, as well as questions about what kind of preparation knowledge you need to learn this course.
3. How hard is it to learn electronic technology?
It is difficult to learn electronic technology. How difficult is it to be difficult? What is the most difficult thing?
It is difficult to learn any technology. There is no technology in the world that can be mastered without hard work and hard study. At the same time, it is difficult and not difficult to be relative and dynamic.
After mastering the learning method in the study, after hard work and intention, after using the learning skills, the difficult problem can be resolved into difficulty, or just a little difficult. After learning to make small progress and success, it has enhanced the confidence of learning and gained new motivation. With this kind of similar "positive feedback", it is much easier to learn electronic technology. If you don't believe it, why? After many people mastered electronic technology, they have achieved great success in the professional field.
  important hint
At the beginning of learning electronic technology, you should not think that this course is easy to learn, not to be taken lightly, and not to be afraid of its complexity. It is much easier to prepare for a full psychological preparation and to prepare for a battle.
4. At the beginning of the study, it’s important to see the results immediately.
At the beginning of the study, most people are skeptical about whether their learning methods are correct, and whether the time and energy invested are getting the corresponding "reward". This kind of mentality is very normal. In order not to disappoint, you need to learn at the beginning. See the effect of learning, give yourself a strong confidence and motivation to learn.
In order to enable you to see the results at the beginning of your studies, the initial stages of learning are very important, especially the entry point for learning is very important. If the starting point for starting a study is too high and you are away from your actual situation, you will encounter many problems that you cannot understand during the course of learning. After a period of time, you will feel difficulties, loss of confidence, and doubt your ability to learn (in fact, the method is wrong, not yourself. Wrong), this will be detrimental to future studies, and we must work hard to get a good start.
  important hint
At the beginning of the study, you should consider the level of your basic knowledge and choose the height of the starting point. The ancients said: "Everything is difficult at the beginning" also gave us enough warnings.
5. What should I pay attention to when achieving a good start?
In order to have a good start, you need to pay attention to the following aspects.
(1) The choice of teaching materials. If you choose not to read it properly, you will have more problems when you study. Therefore, the choice of teaching materials should be based on your own situation, and the difficulty should be moderate.
(2) First theory or practice first, or practice by side theory. According to your actual situation, you can make some choices. If you have practical conditions, you can practice first, so that you have a perceptual understanding. It is also a good choice to start from the theoretical study without practical conditions.
(3) Learning electronic technology starts with circuit analysis or starts with component knowledge. The answer is very clear, starting with components.
6. Extensive reading
At the beginning of the study, we should adopt a learning method that first understands the key breakthroughs, that is, through the rapid reading of the content to be learned, to understand the overall content, not to stay on the specific content and issues, and to understand the overall content through a pan-reading, The content and problems that need to be intensively read and broken out are broken out in the next key breakthrough.
7. Intensive reading
Intensive reading is a key breakthrough. The core content and difficult content of the book need to be intensively read. The core of intensive reading mainly includes the following points.
(1) Use your heart, effort, and time to find out. In the intensive reading process, a reference book is needed. When it is difficult to understand the same problem in the learning process, look for the same problem in another textbook to help you expand your understanding and vision.
(2) The learning form of notes should be used in the process of intensive reading. Although it is traditional but effective, especially this form of learning has a positive impact on one's own psychology, which embodies the philosophical thinking from quantitative to qualitative change in the learning process. .
(3) The purpose of intensive reading is not only to master one or two problems, but also to learn how to learn. Mastering the learning style that suits you will benefit the whole process of learning in the future.
8. Start of learning
(1) It is the most scientific to start from the knowledge of component knowledge. This part of the knowledge is not difficult, and it is also the best to see the learning results, which is conducive to enhancing confidence.
(2) At the beginning of the study, you can participate in some simple practical activities. For example, find an old radio or other electronic appliances, open the casing and observe the electronic components inside, and combine the explanations in the component book to carry out practical activities. If necessary, you can enter a component store, where you can see a large number of components, build a preliminary impression of all kinds of components, and then correspond to the knowledge of the components learned in the book, which will benefit the yuan. Theoretical knowledge of the device.
(3) After establishing a preliminary complete component knowledge system, it can be transferred to the circuit analysis. This process is mainly the study of theoretical knowledge and needs to last for a long time.
(4) After systematically learning the component knowledge and circuit working principle, you can start the theoretical study of the troubleshooting and the actual skill learning. At this time, the effect of learning and repairing the fault technology will be very good, and the difficulty will be much less.
After the above-mentioned round of study is completed, it can be considered that the initial stage of learning is completed, that is, the electronic technology is fully and systematically understood, and the ability to further study is entered, and the learning in the improvement stage will be entered.
9. The choice of teaching materials is related to the quality of the initial learning
It is very important for beginners to choose e-tech books for introductory learning. Due to the lack of basic knowledge and the lack of understanding of the entire electronic technology curriculum, the choice of learning books is often blind and random. Whether the choice of teaching materials is appropriate is related to whether the initial stage of learning is smooth.
10. Electronic and technical textbooks for colleges and universities
The characteristics of this kind of teaching materials are that there are many theoretical contents, more formulas and calculations, and the content is not wide enough, and it is farther away from the actual application. From the perspective of comprehensive mastery of electronic technology and practical ability training, such textbooks are far from enough. It also needs to supplement a large amount of electronic component knowledge and systematic practical circuit analysis content.
It is not appropriate to use practical textbooks to learn such textbooks. Such textbooks are not suitable for self-study.
Beginners engaged in electronic circuit design can use such books as intensive reading materials, but not in the early stages of learning, but after mastering component knowledge and a large number of practical circuit analysis foundations.
11. Component knowledge books
Such books are mainly about explaining component knowledge. These books should be selected when learning entry, because electronic components are the smallest unit of electronic circuits, and also the basis for circuit operation analysis and circuit troubleshooting.
If the book can fully explain the component knowledge, it is better to explain the component identification method, important characteristics, quality detection method, especially the typical application circuit of the component, which is a transition from component to circuit analysis for beginners. Very helpful.
The characteristics of this type of book are practical and highly targeted, and are the preferred readers for beginners.
12. Circuit working principle analysis books
This kind of book takes a large number of common and practical circuits as an example, systematically and in detail explains the working principle of these circuits. There are almost no calculation formulas in the book, which is the main purpose of cultivating circuit analysis capabilities.
From the perspective of learning application technology, such books are very practical and can solve practical problems immediately after reading. For readers who are engaged in circuit design in the future, after mastering a large number of practical circuits, it is also very beneficial to circuit design. You can learn from circuit design ideas and transplant partial circuits. Therefore, it is very necessary and necessary to use such books as intensive reading textbooks.
13. Machine circuit analysis books
This kind of book market is relatively rare. It is based on explaining the working principle of the whole circuit. The book may also have some basic knowledge of electronic circuits, but the content is poor, not detailed enough, lack of systemicity, and beginners seem to struggle.
Reading such books requires the reader's basic knowledge to be comprehensive and solid. For beginners who already have a basic knowledge of electronic technology, they can use such books as intensive reading materials for learning electrical and electronic circuits.
14. Repair technical books
This kind of book is not suitable for beginners to read, because this kind of book tells little about the working principle of electronic circuits. The key point is to introduce fault repairing techniques. It is difficult for beginners to understand, and it is difficult to master electronic technology from the principle.
The knowledge of repair technology should be learned after mastering the working principle of the circuit comprehensively and systematically, so that the effect is better. The purchase of such books should be in the middle and late stages of learning.
15. Materials, manual books
For example, the IC application manual, the latest transistor data, and so on. Such books are not suitable for beginners to read. They are books in the manuals and materials. These tools are needed to enter electronic circuit design or repair in the middle and late stages of learning.
16. Atlas books
This is a repair data book, and is not suitable as a main textbook for beginners to learn electronic technology. However, after beginners have a certain basic knowledge, they can use these books as a book to analyze the working principle of the whole circuit to expand themselves. Knowledge of the knowledge to improve circuit analysis capabilities.
17. Electronic books
Some people like to read electronic books for a lot of reasons. The main point is that they can save money. In fact, this is more wasteful, especially for beginners.
(1) The entry stage needs to be systematically studied, and it takes a lot of time to read the book. When reading the electronic version of the book, the electricity fee is several times more expensive than the book price, and the economy is definitely not worthwhile. If it is paid for reading, the cost will also be counted.
(2) There are many pirated copies of electronic books. There are many unclear things in the book. In particular, the words in the pictures and pictures are not clear, resulting in an additional burden of reading.
(3) When reading the circuit analysis content, if the Circuit diagram and the circuit analysis content are not in the same window, it is necessary to continuously drag the window to affect the normal reading comprehension.
(4) It is not conducive to protecting the eyes and harmful to health. Things that are at the expense of health should be done as little as possible or not.
Beginners should put an end to electronic reading. The advantage of network reading lies in the convenience of data searching, so when doing circuit design and other work, you can find relevant information by means of the quick and convenient network.
18. Beginners' self-learning materials
As a self-study beginner, in addition to the correct choice of the type of electronic technology books, we must also master the following points in order to reduce the difficulties in the self-study process and successfully pass the "difficult and difficult" stage of the beginners.
(1) The main textbook should include such parts: one is the basic knowledge of components; the second is the basic knowledge of electronic circuits, mainly the method of image recognition; the third is the basic theory of repair theory and hands-on operation. If a book cannot contain this content, you can choose two or more books, but you must include these basics.
(2) Coaching materials are also needed. Because they are self-study, there are more “why” in the learning process. If you choose a main textbook, if you have a similar counseling material, it is very useful for self-study at the beginning stage. You can refer to the same content in the tutorial materials to solve problems and difficulties in learning.
19. System learning reduces knowledge breakpoints
System learning can reduce knowledge breakpoints and reduce confusion in the early stage of learning. System learning is a principle that must be observed in beginners' learning, and is the most important aspect of learning.
The understanding in the process of electronic technology learning is carried out layer by layer. The use of the next layer of knowledge to support the knowledge points of the upper layer is an understanding process of layer-by-layer advancement.
  important hint
Judging whether you have learned through the system, or whether the system learning has achieved results, can you see if the problems in the study are too scary? If there are a lot of problems in the study, then you will not complete the system learning well.
20. The importance of systematic learning
Here is an example to illustrate the importance of system learning.
When learning the working principle of the triode multi-stage amplifier circuit, the knowledge of the triode single-stage amplifier is needed to support, and the knowledge of the single-stage amplifier is supported by the basic knowledge of the triode. If you don't master the basics of triodes and the working principle of single-stage amplifiers, the difficulty of learning multi-stage amplifiers is several times more than system learning.
  important hint
A good way to conduct accessible learning is to systematically learn from the basics, reduce the knowledge of the cross section and breakpoints, and oppose skip-style learning. At the beginning of the study, the harm of this kind of learning may not be understood. As a result, the learned knowledge structure is like a dotted line, and there are too many breakpoints, which makes the subsequent learning difficult.
21. An example of the importance of system learning
Here is an example of the importance of system learning. Figure 1-71 shows the electronic filter circuit. To understand the working principle of this circuit, you must have the following knowledge. Otherwise, the working principle of this circuit cannot be correctly understood and analyzed.
Confusion and misunderstanding in the study of electronic technology
Figure 1-71 Electronic filter circuit
(1) Master the working principle of the triode DC circuit, otherwise the DC filter supply circuit of the electronic filter cannot be understood and analyzed, and the focus of the analysis of the electronic filter circuit is the DC voltage supply circuit.
(2) The electronic filter is equivalent to a very large filter capacitor. Specifically, it is equivalent to a filter capacitor with a capacitance larger than C2 (100μF) by β times, which is equivalent to a 100×βμF filter capacitor. If you do not grasp the concept of triode current amplification factor β, then the understanding and analysis of the working principle of this circuit will not be possible.
(3) In the process of understanding and analyzing the working principle of the electronic wave filter, it is very important to analyze and understand the R2 and C2 circuits. Here, it is necessary to master the working principle of the RC filter circuit, the capacitive reactance characteristics of the capacitor and the work of the RC capacitor. Principle, otherwise it is difficult.
From the above points, if not systematic



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