Chapter 593: What should I do if I make a welding mistake?
Lecturer Zhang came to his senses: "What do you mean..."
Gao Zhendong walked away: "Professor Liu is good at this matter. He has also eaten pig-killing rice. You can just ask him for advice, hahaha."
The students present were all happy. I heard that the students who followed Professor Liu had eaten it once, and it was delicious. I didn’t expect that it would be their turn today.
"Did you eat pig meat?" This sentence gradually became a slang term within the Beijing University of Technology, meaning that the matter was done?
Professor Liu also smiled: "Professor Gao, don't you want to eat something together?"
"Don't eat, I still have something to do." Gao Zhendong said with a smile. He only comes one day a week. This time is very precious for the SZ61 supporting party, and Professor Liu also knows it.
Seeing that Gao Zhendong was leaving, Professor Zhang thought of something serious.
"By the way, Professor Gao, I have something else to ask you."
Gao Zhendong stopped: "What's going on?"
What Lecturer Zhang said has nothing to do with shock bombs: "I want to make an appointment with you about tear gas. The structure, medication, etc. of this shock bomb are very new, but they are still barely ahead of my time." It is within the scope of my professional knowledge, but tear gas is a bit beyond the scope, especially in tear gas, and I really have no experience. The comrades of the National Defense Working Committee said that if I have any difficulties, I will come to you for advice.”
Oh, Professor Zhang is so awesome, he actually took on both of them at once.
Shock bombs use explosives and magnesium powder, which are materials that are closely related to traditional ammunition. Lecturer Zhang still has technical reserves, but tear gas is relatively unfamiliar, which directly affects the chemistry side.
In the proposal handed over by the National Defense Work Committee, it did mention the use of capsaicin, but it was unclear as to how to use it and how to get it. Moreover, the current output of pepper is not large, and the capital is not yet the main force. It is also difficult to purchase large quantities in production areas and major consumption areas.
Lecturer Zhang is interested in researching chemical tear gases that can be artificially synthesized, but there is no proposal on what to use to replace capsaicin.
The National Defense Work Committee probably made this suggestion because it knew that this thing would be difficult for comrades with a pure ammunition background.
Gao Zhendong didn't shirk, at least he knew what to use.
"Okay, you can wrap up this phase of the flash bomb next Tuesday. You can come to me next Tuesday." Gao Zhendong directly gave a time.
——
Gao Zhendong was tinkering with the circuit board of the IC principle circuit in his office.
This circuit board had been prepared and sent to him by the Electronics Laboratory of the No. 3 Factory a long time ago, but due to the success of the integrated circuit process, it was temporarily put down and was picked up later.
Factory 1274 moved very quickly and has already sent over a batch of SZ61000~61002 chips. This was a special request from Gao Zhendong on the day when the IC manufacturing process was successful. This batch of chips was used on this circuit board. .
Naturally, 1274 did not dare to neglect his request. It had absolutely no influence on Chief Engineer Gao's work.
Gao Zhendong is soldering chips on it. Gao Zhendong likes to do this kind of test circuit debugging by himself, so that he can have the best grasp of the conditions of the test materials.
Moreover, during the debugging process, it is inevitable to change the wiring, flying wires, etc., and asking people to do it requires explanations. The circuit board is passed around, and time is wasted.
The circuit board is densely packed with chips, and the number is not too small. It can be seen that the function of this circuit is somewhat complicated, but it is obviously not as exaggerated as the CPU.
A puff of white smoke rose up, Gao Zhendong took a long breath, turned the circuit board over and took a look.
Then...
"Oh, shit, I made the wrong weld again." Gao Zhendong cursed.
The three digital circuit chips on hand are all born from the same mother, and they are identical triplets - all in DIP14 packages.
The DIP package of the SZ61 series is the same size as the DIP package of Gao Zhendong's previous life. The reason is very simple. In order to be consistent with the batch of chips imported in the early stage, it can be directly replaced.
If you don't look carefully at the names on the top of the chips, you can't tell the difference between these three chips. They all look the same.
As a result, the chance of welding errors is high. Even someone with a brain, eyes and hands as good as Gao Zhendong will inevitably make mistakes.
This is normal. In Gao Zhendong's previous life, computers were getting faster and faster, accessories and peripherals were becoming more and more advanced, and software was becoming more and more bloated, but there were no less bugs in the software. The same principle applies.
Picking up the pneumatic solder extractor, Gao Zhendong began to dismantle the chip, cursing while dismantling it.
In the middle of scolding him, he suddenly thought of a solution. How could he forget about it?
He grabbed the phone and called Factory 1274, asking them to organize their own research and build a small device, not only for himself, but also for other comrades who use DIP packaging.
After saying his request, he added: "You can consider matching the packaging specifications of the SZ61 series chips to make a series of packages for this thing." After the call, Gao Zhendong sat down again cursing and continued to disassemble the chip. Things are good, but water from afar cannot quench the thirst of the nearer, so they must be dismantled when necessary.
The director of the technical department of Factory 1274 put down Gao Zhendong's phone, turned around and called the section chief responsible for scientific research. After hearing the request, the section chief went back to the office and called a young backbone.
He briefly explained Gao Zhendong's intentions to the young man and drew a schematic diagram. What Gao Zhendong wanted was quite simple and the technical content was not high. Even if he relayed it layer by layer, he could restore a schematic diagram. .
"This thing is what Chief Engineer Gao wants, and it can also be used in other situations in the future. It is a very useful general device. You must put in your best efforts and strive for excellence to combine the design and design of this device. Good production work.”
Gao Zhendong only gave the intention and requirements, but the specific design details still need to be completed by the 1274 factory.
The young man was very excited. It was obvious who Chief Engineer Gao was, and it was something to be proud of to receive any project from him, no matter how big or small.
Because everyone knows that the things done by Chief Engineer Gao, no matter how small or inconspicuous they may seem individually, are very likely to be part of a large and advanced achievement and are of great significance.
Looking at this sketch, the young man sighed: "General Engineer Gao is very thoughtful. This thing looks very simple, but it can greatly facilitate the comrades who use DIP packaging. This is a simple little invention, very good It has improved the work efficiency of relevant comrades.”
In the future, this kind of thing will be regarded as a utility model patent at most, but in this era, it can be said that it is an invention.
This device is a common device commonly used by friends who often use DIP packaged components for design and debugging.
——DIP socket.
To put it simply, the location where the DIP chip should be soldered is replaced with a socket of the same specifications, and the real chip is plugged into this socket.
The benefits of this are self-evident. When welding, you don't have to worry about the specific chip, as long as you weld the appropriate socket, and when assembling, just plug the corresponding chip directly into it.
Moreover, maintenance is also simple. Pull out which piece is broken, which will not cause any damage to the circuit board caused by disassembling the chip. When the force of the desoldering device is too strong and the quality of the PCB is not good, the desoldering device will remove the via holes in one go. , the soldering pad is connected with the copper foil, I believe many people have encountered it.
There are naturally some disadvantages. Firstly, it will increase the cost. Secondly, with the addition of an additional plug-in connection link, the failure rate will naturally increase. Therefore, in equipment with high-volume, low-cost, high-reliability and other requirements, the use of DIP sockets is Will be very restrained.
But for ordinary products with small quantities, the overall benefits are not small.
"It's good, isn't it? It's simple, isn't it? Then why didn't you think of it? It's so shameful that Chief Engineer Gao has to spend so much time solving such a small matter!" Unable to let the young man raise his tail, the section chief decided to give it a beating. Although this beating is somewhat unreasonable.
But young people don't take it seriously. They are not as good as Chief Engineer Gao. They are not embarrassed: "Section Chief, didn't you expect that? Haha."
It seems that Corey's gay relationship is very harmonious and the atmosphere is extremely healthy.
The section chief was at a loss for words for a moment: "Here... Gee, hurry up and do your work. If you can't do it well, I want you to look good!"
The young man said seriously: "Make sure to complete the task well!"
All joking aside, he still understood how important the project from Chief Engineer Gao was. This matter was different from Corey's own project. Regardless of the size, it would definitely be registered with the factory leaders.
If you do well, it will be smooth sailing, but if you do poorly, your butt will probably be welded to this bench within five years.
Not to mention the negative impact it will have on Chief Engineer Gao's work if he doesn't do it well, the sin would be huge.
But the young man is not worried at all. Firstly, this thing is indeed simple. Secondly, he knows that if he has any questions, he can ask Chief Engineer Gao in the factory. Chief Engineer Gao is a very strong character and very generous. Never hide anything, always answer your questions.
"The main implementer of DIP series electrical sockets" sounds like a good title, and the young man is pleased with it.
When Gao Zhendong and Factory 1274 were working hard on his latest scientific research project, two people came to him on this day.
Both of them were acquaintances, the first one was Shazhu, and the other one was the comrade from the technical department of the third factory who was responsible for cooperating with him.
"Hey, the self-heating rice and warm baby are here, sit down and sit down." Gao Zhendong joked.
Although the two things are combined into one topic, there is naturally a division of labor according to different majors. Shazhu is more responsible for self-heating food, and more comrades in the technical department are responsible for self-heating food. Gao Zhendong will give them two Got these two nicknames.
The two sat down and Shazhu smiled and said: "Zhendong, I'm here to ask for help."
Gao Zhendong raised his eyebrows: "Hey, that seems to be good news."
(End of chapter)