Electrical experts or those who understand electricity, electrical knowledge, several common electri

First of all, let's start with a simple start, how do you master the knowledge of electricians, such as three-phase electricity, live wire, neutral wire, transformer, electricity meter, multimeter, and megohmmeter? Will it work? If you are not convinced, learn "Fundamentals of Electrician" first, and get the most basic things done first!

Then if the most basic is no problem, try to find some books on relay control to learn, I studied "Factory Electrical", this must be learned, although it is a little difficult, but it must be learned well, otherwise it will affect your long-term development. The main thing is to master the principle and application of contactors and relays, and the relay control circuit does not need to be memorized, but the control process must be clear, especially the logic control sequence. And what self-locking, interlocking, or something.

When you are proficient in this, you can buy a PLC book and learn to make a ladder diagram of PLC, because the ladder diagram of PLC is converted from the relay control circuit, which is why I want you to learn the relay control circuit well, learn it well, and PLC programming will be relatively easy to get started. When you have learned almost PLC, then learn sensors, inverters or something, so that you may have the opportunity to PK with electrical engineers in the future, of course, all these prerequisites are that you have the perseverance to continue learning, otherwise everything is not to be discussed. It's not long since I graduated, let's make progress together!

I'll wait until I have time to chat!

Buy a copy of the "Manual of Electrical Techniques for Using Cranes".

The electrician's manual is on the line, the key is to practice more and be careful.

If you are an apprentice, you will learn the "Practical Manual for Electricians" first

If you still don't understand, you can refer to the electricity section in the middle and high school physics textbook.

Then learn some modulus and digital electricity, and the basics are almost the same.

Take a look at the four parts of "Electrical Engineering", the first part talks about the basics of circuits, the second part talks about electrical control and power supply, etc., the third part talks about analog electronic technology, and the fourth part talks about digital electronic technology. Books may need to be read little by little, and if you don't understand it, you need to check other information, and at the same time, you must be diligent in your mouth, as long as you work hard, you will be rewarded.

1. You go buy a copy of the electrician basics first. A must-see.

2. Then buy according to the classification you are working on, such as relay protection, low voltage, high voltage, high voltage test, etc., and buy a book that suits you.

First go to Xinhua Bookstore to buy a little electrical circuit diagram books, start with a simple circuit diagram, remember his symbols, understand the principle of the circuit diagram, combined with the actual operation, you will quickly get started.

The contents of electrical science are as follows:

1. The main courses of electrical engineering major include circuit principle, analog electronic technology, digital electronic technology, microcomputer principle and application, signal and system, automatic control principle, motor and drag, power electronics technology, Shenli drag automatic control system, electrical control technology and PLC application, microcomputer control technology, and power supply technology.

2. Electrical code bucket program specializes in circuit principle, analog electronic technology, digital electronic technology, microcomputer principle and application, signal and system, automatic control principle, motor and drag, power electronics technology, power drag automatic control system, electrical control technology and PLC application, microcomputer control technology, power system analysis.

3. Electrical part of power plant: electrical engineering, principle of automatic device of power system, electrical engineering, high voltage and insulation technology, English for electrical engineering, steady state analysis of power system, transient analysis of power system of touch bridge, high voltage technology, high-voltage DC transmission technology, relay protection.

4. The employment direction of electrical engineering major is electrical engineering and its automation major, which involves power electronics technology, computer technology, electrical and electrical technology, information and network control technology, machine application integration technology and many other fields, which is a comprehensive and strong discipline, and its main characteristics are the combination of strength and weakness, the combination of mechanical and electrical, and the combination of software and hardware.

The electrical schematic diagram is used to show the working principle of the equipment and the role of each electrical component, which is generally composed of several major parts, such as the main circuit, the control and execution circuit, the detection and protection circuit, and the distribution circuit. This kind of diagram is generally used in the design and analysis of circuits because it directly reflects the electronic circuit and the electrical junction structure and the logical relationship between them.

When analyzing a circuit, you can understand how the circuit actually works by identifying the various circuit component symbols drawn on the drawing sheet and how they are connected to each other. The electrical schematic diagram can be divided into the schematic diagram of the whole machine, the schematic diagram of the unit or ruler part of the circuit, and the schematic diagram of the whole machine refers to the partial circuit diagram where all the circuits are gathered together.

Electrical majors (including electrical engineering and automation, etc.) are about electricity (it is necessary to explain that electricity is not an electrical appliance, it includes all the equipment that uses electricity. This concept is quite extensive, as long as it is electrical, as long as it is electrical control, it is electrical control) control professional; The goal of the profession is how to make the machine run automatically, which is often referred to as "intelligence", and the machine can adjust its work according to changes in the environment.

Compulsory courses: Fundamentals of Electrical Engineering, Power Electronics Technology, Motor Control Technology, Electrical Equipment and Electrical Control Technology, New Energy Technology, Testing Technology, Distributed Control System, Electrical Engineering Protection Technology, Control Electrical Technology, Computer Network and Database Technology, Electrical Equipment Testing Technology, Circuit, Electrical Machinery, Analog Electronic Technology, Digital Electronic Technology, Automatic Control Principle, Power Electronics Technology, Power System Analysis, etc.

Electrical knowledge, several common electrical explanations, let's take a look.

The alternating current in the winding, and the current drawn out by the brush is DC no load, that is, it runs without load, and the load is zero.

Keep in mind that whether it is an electric motor or a generator, the power rating refers to the output power, which is mainly based on the energy balance relationship.

The armature reaction of the DC motor will not only demagnetize, but also distort the air gap magnetic field, and the motor may have multiple poles, so the discussion is all about the electrical angle, and the mechanical angle is rarely studied directly, so here is the geometric neutral.

There are three conditions for self-excitation of parallel generators, and remanence is one of them, because the motor absorbs electrical power from the outside.

Electric-Motor! Electromagnetic torque is not a drag property, why drag the load?!

Explained in question 4.