How to learn circuit diagrams?

What is a circuit diagram and how to learn it? In the work of electronic engineers, circuit diagrams are inseparable. Even if you don't know how to draw circuit diagrams, you still need to know how to read circuit diagrams. This is just a basic skill. Therefore, mastering circuit diagrams is one of the prerequisites for entering the electronics circle. Let me introduce to you how to learn circuit diagrams and how to use them.

Characteristics of electronic circuit diagrams

1. Complex structure

Electronic circuit diagrams are much more complex than electrical circuit diagrams. Not only are the electronic circuit diagram structures of household appliances such as TVs, monitors, DVDs, stereos, induction cookers, and electric vehicle chargers extremely complex, but also the microprocessors of fully automatic washing machines, air conditioners, and refrigerators. The (CPU) circuit is also very complex.

2. Many types of components

In order to achieve different functions, electronic circuits use a large number and variety of components. With the continuous development of electronic technology, the application of a large number of new components, especially the continuous application of large-scale integrated circuits, has brought more difficulties to circuit diagram identification.

Learning skills for understanding electronic circuit diagrams

1. Through component knowledge map

Electronic components are the smallest units that make up electronic products. Therefore, understanding the physical appearance, circuit symbols, and text symbols of components, and further understanding their working principles is the basis for learning circuit diagram recognition. Due to the wide variety of electronic components, it is impossible to master all the components in a short time. You can first understand common components such as resistors, capacitors, diodes, and transistors.

2. Learn the unit circuit diagram

Any electronic circuit is composed of different numbers of unit circuits. Simple circuits use fewer unit circuits, while complex circuits use more unit circuits. For example, a self-excited switching power supply is composed of a starting circuit, an oscillation circuit, an error sampling amplifier circuit, a width adjustment circuit, an output rectifier/filter circuit, and a protection circuit. The color TV line scanning circuit is composed of a line oscillator, a line excitation circuit, and a line output circuit. These unit circuits are composed of basic unit circuits such as resistor series/parallel circuits, capacitor series/parallel circuits, amplifier circuits, and oscillation circuits.

If the circuit of the whole machine is compared to a house, then the electronic components are bricks and tiles, and the unit circuit is a section of wall. Therefore, if you master the working principles and diagram identification methods of electronic components and unit circuits, you can quickly master the diagram identification method of the complete circuit. The above are some recommended methods for learning circuit diagrams. I hope they can help you.