Summary report of electronic technology training

# Report # Introduction Summary Report is a declarative document for meeting leaders to summarize the meeting and its achievements. The following is the summary report of electronic technology training, welcome to read!

Tisch

A week's internship is very short, but the content is rich and colorful. The daily internship tasks are very tight, from the first day of basic learning to the later tasks, to the innovative tasks, and finally to electronic drawing. After a few days, we finally succeeded, enriching the basic knowledge and greatly strengthening our practical ability.

(1) Basic learning. In this part, we mainly study the identification of various components. For example, the identification of the resistance value of the color ring resistor was unknown before, and the specific resistance value can be read directly from the color ring on the resistor without using a multimeter every time, which is much more convenient. There are diode triode classification, pin description and so on. If you are familiar with these, the next task can be completed more efficiently.

The use of bread board is a new attempt for us. We have never touched it before. After specific research, we know that bread board is specially designed and manufactured for the solderless experiment of electronic circuits. Because all kinds of electronic components can be plugged and unplugged as needed, welding is omitted, and the assembly time of the circuit is saved, and the components can be reused, which is convenient and fast. During the use of bread board, we also learned some experiences: (1) The fewer connection points, the better. Every time a point is added, it actually increases the probability of failure artificially; (2) Try to avoid overpasses, which are horizontal and vertical. If the layout is like an overpass, on the one hand, it will bring trouble to replace components later. On the other hand, when a fault occurs, messy wires are easy to make people lose confidence; (3) Try to be firm and compact, and the layout is similar to the schematic diagram, which is convenient for line inspection and safer.

(2) Clear tasks. This part has two tasks, namely, welding touch alarm and bedside delay light. In order to be familiar with the circuit diagram and understand the principle, we need to lap the original circuit on the bread board first, and then weld it on the pcb board after passing the test. People thought it would be easy to lap the circuit on the bread board, but in fact it was quite complicated. The experiment, which took nearly one morning, went around, but it didn't achieve the expected effect. After careful inspection, it was found that the circuit was virtually connected.

In fact, this part of the harvest, because during the acceptance of the teacher, I have carefully read everyone's circuits, and I have thought a lot about troubleshooting. The principle of the circuit has been very clear, so the next pcb board welding naturally came and was successfully completed. But this part of the teacher also taught a lot, such as the handling of solder joints, the beauty of solder pads, the problem of virtual welding, etc., and finally passed the test perfectly.

(3) Innovative task, this part is mainly to weld a football with wires and design a work by yourself. Welding football with wires is a big task. First of all, we found the appearance of football on the Internet, and we know that football is composed of 12 pentagons and 20 hexagons. Then we began to design the welding scheme, the size of each side, the welding steps, whether it is necessary to remove the skin of the wire and so on. The three men discussed it and decided to remove the skin of the wire. The wire should not be too long, starting with a pentagon and welding step by step in the morning. Generally speaking, the football welded by us is quite in line with expectations and is also very solid. After falling, it has not left the weld.

The welding task designed by ourselves is the welding of the Louvre model. To tell the truth, this is not as simple as imagined, it should not only conform to the original appearance, but also be standard and beautiful. Moreover, the welding amount is relatively large, and the welding time on each side is relatively long. With our full cooperation, it will be finished soon. Generally speaking, we are satisfied, which not only improves our welding technology.

Promotion has also enhanced our interest.

(4) Electronic drawing. This part mainly uses microsoftvisio software to draw the circuit diagram and mathtype software to write the formula. Microsoftvisio is a flowchart and vector drawing software running under windows operating system. It is very convenient and quick to use this software to make flow charts and circuit diagrams. By learning this software, we are not only familiar with the production of flow chart, but also have a deeper understanding of the principle of circuit diagram, which is convenient for us to draw circuit diagram in the future. Mathtype is a software with convenient shortcut keys. If it is skillfully used, it can greatly improve the speed of inputting formulas. Moreover, many formulas that are not commonly used cannot be input in word, so this software can be used to improve efficiency. Experience: This internship is much more rewarding than expected. It improves the original weak basic link, corrects the mistakes better than the previous circuit board welding, and makes our theory and practice more closely. It not only verifies the textbook knowledge we have learned before, improves our practical skills, but also learns the software we have never been exposed to before, thus greatly improving our comprehensive ability.

extreme

Electronic technology practice is a highly technical basic course, and it is also an important practical link for the department of science and engineering in our college to carry out engineering training, learn technical knowledge and improve comprehensive quality. From the second week to the fifth week, I will do this internship for four hours every Tuesday afternoon.

The internship task is to make a multimeter. I didn't know what to do in the electronic technology internship at first. I thought it would be like the previous metalworking internship. Later, I learned that I had made a multimeter and I could take back the work I had done. It sounds really interesting, and it should be fun to do! In this way, I started this internship trip with great interest and fun.

On the first day of practice, that is, the second week, I watched the scope and technology of electronic technology practice in the video, as well as the skills of the teacher's climax in the video, and I was envious. This afternoon, I got a preliminary understanding of electronic technology practice, a certain understanding of circuit boards and circuit components, and some guidance for my actual operation in the next three weeks.

In the third week, I didn't learn how to make it, but I did some basic work exercises and practiced how to weld resistors and wires with an electric soldering iron. The soldering iron is strange to me, so I take the opportunity of this practice very seriously. Let me talk about the welding process again. First, insert the prepared components into the designated position on the printed circuit board. After heating with an electric soldering iron, use some proper amount of solder on the cutting edge of the welding head, and the amount of solder depends on the size of the solder joint.

When welding, the cutting edge of the welding head should contact the welding spot and the component lead, and move according to the shape of the welding spot, so that the flowing solder can cover the welding spot and penetrate into the gap of the welded object for about 3-5 seconds, and then remove the electric soldering iron. The time, direction and speed of removing the soldering iron determine the quality and appearance of welding. The correct way is to withdraw the soldering iron quickly when leaving the solder joint, and then leave the solder joint quickly, so that the solder joint is bright, smooth and burr-free.

When welding, the welding time should not be too long to avoid scalding components, but it should not be too short to cause false welding or virtual welding. After welding, clamp the welded parts with tweezers and pull them out properly to check whether the parts are welded firmly. If it is found to be loose, it must be welded again.

Welding looks simple, but there are many skills that need to be paid attention to, such as the strength of the side clamp to clamp the wire, the amount and time of solder wire in the welding process, and we can't do more or less! I think the most difficult thing is soldering. I always can't grasp the quantity of solder wire and the time of soldering iron. I think this is a good practice, otherwise I don't know how many originals are welded.

In the fourth and fifth weeks, we started the welding of the last multimeter. It is inevitable that we are a little excited to think that the multimeter usually used in the physics laboratory can be welded by ourselves now.

In the third week, due to physical discomfort, the welding effect was not ideal, and r4 was actually welded at the position of r3. As a result, the welded ones were removed and soldered again. After class, I found that the progress was much slower than others, and I was worried that I couldn't finish welding in the fourth week, but the teacher asked that I couldn't weld in private, so I planned to catch up with the progress early in the fifth week. In the last week, I paid close attention to speed. After the circuit board is soldered, I ask the teacher to check and score, and then assemble the shell. I always feel that the quantity and time are not well grasped, so the overall welding is not very good, and the teacher scored 4+. Which means that the assembly of the housing can be continued.

The shell assembly seems simple, but it is not easy to assemble. The circuit board won't press down when I install the shell. Found that the foot left on the welding surface was too long, and adjusted it again. After the assembly, I confidently asked the teacher to do the final inspection. The teacher measured it and found that all the functions were good, and no devices were soldered, so the accuracy may need to be improved. The teacher signaled that my multimeter was finished, and I really felt a sense of accomplishment. I took it home to my father during the eleventh holiday. My small multimeter can still be competent for jobs with low accuracy requirements at home. Dad is very happy!

Electronic craft practice made me feel the pain and joy as an electronic craft worker, and also tested my knowledge.

Through this internship, I not only completed a multimeter by myself, but also learned a lot. Firstly, the theory of electronics is consolidated and the ability to identify electronic components is enhanced. Through the measurement of components, the ability to use multimeter is also enhanced. Secondly, we have cultivated our practical ability. Practice is the criterion for testing truth, and theoretical things are true only after being tested by practice. By assembling a multimeter, we can understand its working principle and learn the welding process. In addition, this internship also exercised our ability to solve problems. In the internship, we met all kinds of problems. Through this internship, we learned to take our time when facing a problem, clear our minds, find the root of the problem, and then solve the problem step by step.