"Feng Shan, please continue to calculate the design of the two schemes of suction and rotation."
Feng Nuo was now an electrician again and began to review electrical formulas with difficulty. In line with the principle of starting from the simple, and due to the consideration of power supply issues, he chose to trial-produce the simplest DC relay first. However, after all, he was not a major in this major.
The little electrical circuits and college physics courses I learned have been returned to the teacher long ago, let alone the high school courses.
Xiu Yuxuan provided him with some texts of the trial production materials he had produced, as well as some scrapped trial production samples. It was obvious that Engineer Xiu's understanding of relays was no better than his own.
In the past two days, Feng Nuo has been thinking about the relationship between the relay suction force and the power supply and coil parameters, and the progress has been very difficult. Feng Nuo has read a lot of relay books, and the books on this formula are very few and very simple. He can only figure it out by himself.
The relay in the original space-time only needs to control the working circuit and does not care much about the suction force; but he uses the suction force of the relay to drive the mechanical structure. From this point of view, what he created is not a relay at all, but a simple electromagnet.
Feng Nuo was a little frustrated by his new discovery, and the long calculations made his brain hurt, so he pushed a pile of draft paper in front of Feng Shan and said, "First check what I have calculated before, and then proceed with the design.
There are a few key points.”
"First, based on our self-made enameled wire with a wire diameter of 0.3mm, don't forget to ask Kanai to send enameled wire samples to the central laboratory to measure the thickness of the paint layer;"
"Okay, no problem, teacher." Feng Shan replied, took the pad and pencil and began to record the key points.
"Second, we need to limit the total power. First consider the turn-on time of each inspection hole to 0.1s. At least ensure that the 24V/20,000mAh battery of Mr. Zhong can support the inspection of 20,000 cards, and preferably 50,000 holes.
Zhang or more."
According to Feng Nuo's rough estimate, if 50,000 holes are to be inspected, each of which is calculated based on the normal situation of 160 holes, the power-on time will be more than 200 hours, and the power of each coil must be maintained at about 2 watts.
It is not easy to ensure that the suction power is not too small under such circumstances.
"OK."
"Third, the suction power should be more than 5 Newtons."
I am afraid that the existing mechanical materials cannot guarantee a very light mechanical control mechanism, and if the suction force is too small, it may be difficult to drive.
"good."
"Well...if you still have the energy, consider the effects of temperature rise and magnetic flux leakage on the coil. I haven't considered this part now. I can experiment slowly later."
"Um."
"Oh, also, many materials say that in order to reduce the influence of residual magnetism, copper or brass pins or washers should be added to the top of the armature. Don't forget to include the thickness."
"..."
"Different from theoretical scientific research, the most important thing in applied technology development is to be based on existing conditions. With these constraints, we can move forward in the direction of solving problems instead of talking aimlessly. And as long as the path is clear,
Now, problems such as slow speed, low efficiency, poor quality, and high energy consumption can all be overcome one by one with concentrated efforts."
After Feng Nuo got rid of the bunch of problems that were causing him headaches, he gave a high-sounding theory - of course, this was also based on experience. Feng Nuo's laboratory in the original space and time can be regarded as a Problem Solver. After that, he
She walked to the bed in the corner of the workroom and fell on it. Feng Shan was already used to Feng Nuo's nagging and admonishing, so she silently took the pile of twisted acting papers and started to look through them.
Feng Nuo was very tired, but he still felt very excited. He tried hard to stop his thoughts and let his brain rest. It was dinner time. Qian Yuzhi and Li Janai both went to the cafeteria and came back to buy lunches. The next door was faintly visible.
The roar of the server, the rustling of Feng Shan's calculations and writing in the room, and the occasional sounds of chants and metal collisions from the machinery factory workshop in the distance made his tense nerves slowly relax. Feng Nuo liked it very much.
This feeling, gradually, these sounds became farther and farther away from him... At some point, he fell asleep.
…
When he woke up, it was completely dark outside. Only a small lamp on the workbench was on in the room. Feng Shan was reading a book by the dim light. There was a small stack of neat books on the table next to him.
The white paper was filled with neat and standardized formulas and derivation - she had completed the design plan.
Feng Nuo walked over and picked up the plan and looked it over. He felt that there was nothing wrong with it. He estimated that the amount of copper used in this plan was not small, and the iron core material also needed to be reprocessed. Fortunately, Qian Yuzhi had ready-made labor - he
I am a mechanic by trade.
In the next few days, Feng Nuo applied for machine tool processing hours from the machinery factory, and asked Qian Yuzhi to process the silicon steel materials into the designed shapes and sizes for the two suction/rotation schemes. Some more complicated tasks were done by asking
The old worker did a good job. He personally led Qian Yuzhi and Feng Shan to start the winding machine and made several samples.
The size of the sample is about one circle larger than an adult's fist, which is still acceptable in this era when industrial products are generally large, black and thick. After a power test, the suction force was smaller than the theoretical value, and the temperature rise of the coil was more obvious. Although
In the application of the punch card machine, the relay is energized intermittently, but it does not rule out the situation that a certain hole position of many consecutive cards is perforated. It seems that although this Laoshizi punch card computer does not have electronic components, it must also consider heat dissipation.
Problem. Since there is no motor, air cooling is out of the question. Should we use water cooling? Use copper pipes to circulate water to dissipate heat. This also requires considering the sealing and sorting of the pipes - Feng Nuo was a little dumbfounded.
But this was considered a success, and Feng Nuo was still in a good mood. He made a report to the Planning Institute, requesting more raw materials, and first produced 100 rotary and suction-type relays.
Then, he called the standard parts factory and asked them when they would have thinner copper wires. Although the relays here mainly drive the mechanical structure, there are also a small number of relays used to control other relays. This type of relays
The suction force is not important, smaller power consumption is better. If you don’t want to greatly increase the coil length of the relay, you can only use thinner copper wires to increase the resistance and reduce the current. By the way, you can also reduce the weight and volume of the relay.
The standard parts factory's answer is "under testing". As for the progress, it is still "unclear at the moment", but "it is making great progress".
"This is designated as model B." Thinking of this, Feng Nuo made a note in the memo. The next step is to sort out the manufacturing process and submit it to the Planning Institute for archiving. He also has to meet with senior officials from the Ministry of Science and Technology and the Electric Power Port to discuss the relay and even future designs.
The naming and sizing of various electronic components. Having worked in the Planning Institute for a long time, he is very sensitive to such matters, and it is also considered one of his job duties - there are not many IT department veterans working in the Planning Institute.
I heard that Fonnuo had developed a relay that was entirely a version of this time and space, and many senior officials came here because of its reputation. The purpose of their visit was simply to let Fonnuo strike while the iron was hot and continue to develop more models and relays for different needs. When they were not finished,
It seems that this thing is not necessary. Once it was developed, demand sprung up like mushrooms after a rain. Some asked him to develop AC relays, some asked him to develop overload/underload protection relays, and some asked him to develop time delay relays.
Yes, he was even asked to develop thermal relays and optical relays.
"This has nothing to do with the electromagnetic relays I have made now!" Feng Nuo was complaining in his heart, and at the same time he had to find other excuses to get rid of this man who patted his chest and said that he would set up a special electronic equipment factory for him in the Senate.
The elder coaxed him away. Of course, he did not forget that the main direction at the moment was not to develop relays at all, but to quickly complete the tabulating machine.
"It seems that the development of electronic equipment is also a vast world with great potential." Feng Nuo secretly regretted that he was definitely not as good as the veteran of the power port in this aspect. At the moment, this group of people had no time, so he took the lead and waited for them to react.
Relying on your own foundation, it is impossible to go to other people's sites to grab food. It is more reliable to just work on computers honestly.
"But we can cooperate. After they have tubes and transistors, they will not be able to only build radios, televisions and radars. Electronic computers will be a matter of time. By then, our current layout will be powerful, and no one can bypass us.
Make electronic computers." Feng Nuo thought as he smiled unconsciously, causing Li Janai, who had just entered the workshop, to look at him several times. However, Feng Shan was already used to her boss often wandering around in broad daylight, so she didn't like this
Turn a blind eye.
Among the several people, Li Janai was the last to enter the workshop and did not understand mechanics or electricity, let alone computer theory; but she seemed to be born for this line of work. She was exposed to it every day, and she actually basically understood the working mechanism of relays, even better than Qian.
Yu Zhi was stronger. Feng Nuo asked her to help Feng Shan and be responsible for trial-producing several other types of relays. This made her status in the workshop surpass Qian Yuzhi. Every day, she would either send him to get raw materials or go to the car.
Artifact. Seeing the young man busy being directed by himself, he felt a little inexplicably happy.
Since coming to work for Feng Nuo, Li Janai feels that his depressed spirit has been relieved a lot. Compared with Chief Dugu and Chief Lu, Chief Feng is very approachable. Senior Sister Feng Shan is a bit taciturn, but also very gentle and friendly.
There is also a dull Qian Yuzhi.
Looking back, I have never had such a relaxed life since I was born. Naturally, I can’t remember much about my childhood, but it is nothing more than cold and hungry. From the beginning of the quarantine camp, I was a cog in the "organization", and "
"Organization" has no warmth at all; the atmosphere among the students of the maid school is not good to begin with, not to mention that she is still a "hidden person" and is always emotionally separated from others; as for the assignment after graduation,
Such an encounter...
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Next update: Volume 7 - Guangdong and Guangxi Strategy Chapter 49