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Anonymous users2024-02-11Big brother, you're too lazy.
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Anonymous users2024-02-10I have learned a lot of things through this internship, and I have learned a lot and knowledge in the internship process, and I also know how to troubleshoot some mistakes in the internship, so I think the internship is very exercised, I like the internship, and I also like the internship teacher, he taught us very hard, and he will not be patient to help me guide me Thank you very much. Thank you to the teachers. The Power Electronics Internship is an internship that combines book knowledge with practice.
Through this internship, we learned about thyristor devices, how to use a multimeter to measure the three stages of a thyristor, and use the measured data to judge the polarity.
Our internship is divided into two steps, the first step is to remove the original parts of the circuit board soldered by other classes, use a multimeter to measure, calculate and compare, to see which components are good, can continue to be used, which are damaged, and continue to use the good ones, so as to achieve the purpose of recycling. The second step is to re-solder according to the circuit diagram. Welding is a very important technology, and it is necessary for a student majoring in electrical engineering.
The quality of soldering is related to the quality of an electronic product. In the process of welding, it is easy to appear virtual welding, collapse, circuit short circuit and other problems. When soldering the circuit, it is necessary to consider the wiring of the components, and how to route will affect the beauty and quality of the circuit board.
Our internship was about welding unipolar thyristor trigger circuits, using monopole transistors, which are also made of semiconductor materials. The thyristor needs to meet two conditions for the conduction, one is the anode plus the forward voltage, and the other is that the gate is triggered. Be especially careful when welding components, don't be sloppy, a sloppy will make mistakes, especially the voltage regulator, thyristor and unipolar transistor, the three pins of the unipolar transistor are soldered wrong, and the trigger waveform will not be generated when observed after power-on, and it will not meet the requirements of the practice.
I encountered this situation when soldering the circuit, after the soldering is completed, after the power is on, I use the oscilloscope to observe the waveform of each point, and the waveform of the other points is normal, that is, there is no trigger waveform at the trigger output. After the power failure, I checked the soldered circuit board according to the circuit diagram, and found that there was no soldering error in other places, that is, the three-stage welding of the unipolar transistor was reversed, I removed it and soldered it again, and then turned on the power, which is the waveform of the measurement output point.
Although the internship time is short, it is more than the knowledge learned in the classroom, because it is a combination of book knowledge and hands-on ability, as the saying goes, practice brings the truth, and only by doing it can we consolidate and master the knowledge learned. Through this week's internship, my welding skills have improved again, and there are fewer places that were prone to virtual welding. Now I have a better understanding of power electronics, which plays a very important role in the transmission of high-voltage electricity.
Finally, I would like to thank the teacher for his guidance.
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Anonymous users2024-02-09Learning while working is better than school, but there must be a basic theory of electrician, and if you don't figure out the reason, you can't.
I don't know why I know it. The scope of power engineering is very wide, design, construction, installation, commissioning all belong to power engineering, you can combine your work to buy two related books to see, such as technical questions and answers, etc., which is very practical.
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Anonymous users2024-02-08You intend to study that level, and there is a wide range of power engineering.
I can give some advice on your questions, first of all, I am a graduate of North China Electric Power University, so first of all, Huadian, if you want to enter the North China Electric Power System, that is, the State Grid, then the choice of North China Electric Power University graduate is a very good choice, because in the north, our teachers have their own research projects, their own students are recommended after graduation, the opportunity to enter the State Grid is very large, my brother is in this way, he himself is not from the power system, because he is a fellow countryman, so he understands more clearly. >>>More
Can you grasp the opportunity of e-commerce, multiple income, speed to win, and entrepreneurship from home that few people accept today? >>>More
Tsinghua University, Huazhong University of Science and Technology, Harbin Institute of Technology, Zhejiang University, Xi'an Jiaotong University, Shandong University, Southeast University, North China Electric Power, Tianjin University, Hunan University, Chongqing University, Wuhan University, Shenyang University of Technology, Hebei University of Technology, Hefei University of Technology, Southwest Jiaotong University, Beijing Jiaotong University, Beihang University, Dalian University of Technology, Northeastern University, Shanghai University, South China University of Technology, Northwest University of Technology, Jiangsu University, Xi'an Institute of Technology, Yanshan University, Harbin Institute of Technology, Zhejiang University of Technology, Fuzhou University, Xinjiang University, Dalian Maritime Affairs.
I'm electrical, of course, the so-called electives are your own choice, but it's better to have something to do with our electricity. I'll tell you about the electives I took at that time, I hope it will be useful to you. >>>More
Electrical control and PLC, single-chip microcomputer application technology, automatic detection technology, automatic control principle, inverter application technology. Wuhan Huatian Electric Power Automation Co., Ltd., referred to as Huatian Electric Power, is a high-tech company established in 2001 on the basis of the original Wuhan High Voltage Research Institute High Test Equipment Factory, and its predecessor, Wuhan High Voltage Research Institute High Test Equipment Manufacturing Plant, was established in 1992 and is one of the earliest manufacturers engaged in high voltage testing in China. >>>More