How to learn electronics?

Electronics was first developed from the application of radio communications. Later it was used in radio broadcasting, radar, navigation, telemetry, remote control and so on. Because it is the use of radio waves to disseminate information to achieve the purpose, so people are accustomed to call it radio technology. With the rapid development of science and technology, electronic technology is also gradually developed, widely used in addition to the above health care, business, culture and education ...... various aspects. What is electronic technology? Simply put, electronic technology is the application of electronic components or electronic devices to achieve a particular purpose or to accomplish a particular task. The object of electronic technology is electronic devices and various basic functional circuits composed of devices, as well as devices or systems composed of certain basic functional circuits with various purposes. Electronic technology is the most rapidly developed and most accomplished science and technology since the beginning of this century. It has penetrated into a variety of scientific and technological fields, a variety of scientific and technological sectors are actively using electronic technology to achieve greater progress and development of the sector. As electronic technology has been deep into the various sectors of production, scientific research, economic management and other aspects of the depth of the people's lives, so the development of electronic technology will promote the development of the national economy and improve the spiritual and material life of the people play an extremely important role; thus popularizing, popularizing the use of electronic technology is also of great significance. The majority of readers, especially beginners are eager to learn electronic technology. So where to start? How to learn? Here are a few comments for your reference. Learning electronic technology in the primary stage of learning methods to grasp the following links: 1. Mastery of basic knowledge: Beginners can start reading some popular books and magazines, a rough understanding of some commonly used terminology and the most basic concepts. This preliminary "literacy" is very necessary, is necessary to get started. For example, learning the concepts of current, voltage, resistance, electric power, direct current, alternating current and so on, as well as mastering some basic laws, such as Ohm's law. These concepts are more abstract, in the study should pay attention to try to relate to the actual learning. For example, when learning voltage, you can try to use a multimeter to measure the voltage of the battery. When possible, you can also look through the instrument to see what the waveform of the current or voltage; listen to the effect of electrical signals into sound signals. These with the help of actual measurements and observations, can make these abstract concepts concrete, both easy to understand, the impression is also deep. Mastery of these basic concepts, for further study of electronic components and devices and knowledge of circuits to lay a preliminary foundation. 2 The Recognize commonly used electronic components and learn to read circuit diagrams: Beginners can start from recognizing commonly used elements and devices, such as resistors, capacitors, coils, diodes, transistors, and headphones, speakers and so on. To understand their names, letters, symbols, structure, shape, specifications, units of measurement. Further, we need to understand their performance, learn how to identify their good and bad, and how to use the method. In these elements, devices, transistors are the core of the circuit is also the focus of learning, must work hard to understand it. When learning the components, you can use a simple meter to make some measurements and check whether they are good or bad. Learning to read circuit diagrams should pay attention to the study of block diagrams, which is like an outline of an article. Relying on the help of the block diagram will be easier to grasp the structure and working principle of the whole circuit. To memorize a variety of typical circuits, for further study of electronic technology to create the conditions. 3 from simple to complex hands-on production: In order to consolidate the basic concepts, deepen the understanding of the components and understand the role of the circuit, you should choose some simple and easy to do, easy to effect the production of works, such as simple radios, simple toys, simple electronic doorbell, simple measuring instruments and so on. Then further try to do some more complex works, four-tube machine, super-external difference radio, or power supply device. Production of a piece of work to go through the process of recognizing components, looking at the circuit, wiring, soldering, installation, debugging and so on. Beginners should work on soldering and debugging. Before debugging to understand the basic principles of the circuit, clear debugging steps, methods and requirements in order to achieve better results. An excellent work is often the results of the close integration of theory and practice. 4. good at summarizing: Some beginners do not understand the circuit principle, only according to the circuit diagram installation welding, often can be made, but the quality of the work is difficult to ensure that the encounter failure do not know how to do? Such learning is not solid, and slow to improve. If you can deepen the understanding of the circuit principle through the production, and good at summarizing the success or failure of the production experience, improve faster. To learn to analyze the role of each circuit element, to master the circuit of the direct current path and AC path how to go, the circuit of the static current, how the relationship between the voltage, as well as changes in the signal waveform and so on. For example, by adjusting the bias current to summarize the bias current is adjusted up, adjusted down on the circuit work what effect, it helps to understand the amplification performance of the transistor as well as changes in the state of the work and other issues. This repair and troubleshooting will be easier. With the above aspects of learning and training, you can further systematic study of basic theory. If the primary stage of learning focuses on learning qualitative theoretical knowledge and the most basic mounting skills, then further study should raise the requirements. In the theory of the basic unit circuit to have quantitative analysis, can understand the physical meaning of the calculation formula and applicable conditions, and will be flexibly applied. To be familiar with the unit circuit design method, can grasp the parameters of the circuit, the characteristics of the change. In addition, it is necessary to further improve the practical hands-on ability to learn to use some commonly used electronic instruments; learn to measure and troubleshooting circuits and so on. The speed of development of electronic technology has not been measured by day to day, but every moment in the rapid development. Learning is also endless. Dear readers, let us for the motherland's four construction diligently learn electronic technology to contribute to the motherland with fruitful results!