Chapter 187: Developing an Oscilloscope Chen Yufeng returns

The dissatisfied guests are people who think they have a lot of status. They feel that it is very shameful to take their own food like everyone else. So they just sit there and don't move.

The restaurant manager of the hotel discovered this problem, and the first-level reaction was sent to Zhang Zhimu.

Xiao Hongyu has been with Zhang Zhimu all the time, and when she heard about this, she was a little dissatisfied and said, "Don't worry about them." If you want to eat anything else, you can go to the restaurant downstairs and order it yourself. ”

"That's not good, they're coming, let's try to make them happy and happy." Zhang Zhimu said: "I'll do it myself!" Go and get me a bottle of wine and a couple of glasses. ”

Xiao Hongyu brought over the wine bottle and drank the glass, and Zhang Zhimu said, "Come with me over there to toast!" ”

"What! Do you want me to toast? Although Xiao Hongyu was a little reluctant, she still followed Zhang Zhimu over to toast those few people who did not move.

Those few who haven't moved are a few big owners, and they won't compete here without a little capital. But when they saw Zhang Zhimu coming over with a cup, they had no choice but to get up.

"How about the owners, there is nothing to fit today?" Zhang Zhimu said: "What do you need, I'll let them come up immediately!" ”

"No, no, no!" The reasons of these owners are still indescribable, because in terms of value, Zhang Zhimu is much stronger than them, and Zhang Zhimu is also eating a buffet with everyone.

"You big owners must not be used to this way of dining. I thought that the guests who came were not bad eaters, so I wanted to bring something fresh to everyone. If you're not used to it, let's go to the restaurant below. ”

"No, no, let's take a break first. After a while, people don't grab so much, and then go over. "Zhang Zhimu has already given them face, and it is impossible for them to really follow Zhang Zhimu to the restaurant downstairs.

Xiao Hongyu saw the opportunity and said, "We're here, don't you have a drink first!" ”

"Yes, yes! Let's have a drink first! These people felt that Xiao Hongyu and Zhang Zhimu came to toast, but it gave them a lot of face.

After everyone had a drink together, they all went to get what they were willing to eat and ate it. Zhang Zhimu and Xiao Hongyu toasted with them a few more times, even if the matter was successfully resolved.

This thing also convinced these people. They also feel very face-saving. After I go back, I will tell others about the fact that Xiao Hongyu and Zhang Zhimu toasted them together at the banquet at the opening ceremony of the Yaogang Hotel.

However, Zhang Zhimu left a good impression on these people. They also understand why the kiln is so different from other places.

After finishing the opening of the Yaogang Hotel, Zhang Zhimu seized the time to give a lecture to those who were engaged in oscilloscopes in Yangchang. Zhang Zhimu understands that without an oscilloscope, a lot of electronic work cannot be carried out. This is a tool that must be addressed. Solving the oscilloscope picture tube while engaging in an oscilloscope can also lay a good foundation for future TVs. Although the phosphor used in CRT is different from that used in televisions, the whole structure is similar. The picture tube of the oscilloscope generally uses a long afterglow phosphor, and the TV picture tube uses a short afterglow phosphor.

After listening to Zhang Zhimu's introduction to the oscilloscope, Yangchang and the others slowly understood the use of the oscilloscope, so he kept chasing Zhang Zhimu to give them a lecture. He knew that if he didn't chase hard, it would be difficult for Zhang Zhimu to calm down and give them a lecture, there were too many things in the kiln.

Some of the people who participated in the development of oscilloscopes organized by Yangchang this time were those who were engaged in electronic tubes, digital tubes, and a few who were engaged in electrical circuits, and the personnel structure was very good.

Zhang Zhimu first drew a simple structure diagram of an oscilloscope on the blackboard. Then he pointed to this diagram and said: "The oscilloscope we developed is actually mainly composed of an oscilloscope tube and a control circuit. The most important of these is this oscilloscope. This oscilloscope tube is actually a kind of electron tube. It is composed of three parts: an electron gun, a deflection system and a phosphor screen. Let's start with each of these parts. ”

Zhang Zhimu was familiar with these things in his previous life. When I was in school, I took a course on the principles of television, and the course design was to assemble a television set. After graduating, I also repaired TV sets.

Zhang Zhimu drew the structure of the electron gun on the blackboard again. The introduction says: "

Let's see, the electron gun is mainly composed of filament F, cathode K, control electrode G, first anode A1, and second anode A2.

With the exception of the filament, the rest of the electrodes are all metal cylinders in structure, and their axes are all kept on the same axis. When the cathode is heated, it emits electrons in the axial direction; The control electrode has a negative potential relative to the cathode, and changing the potential can change the number of electrons through the control of the tiny hole, that is, the brightness of the light spot on the phosphor screen. There is also a post-accelerated electrode A3 between the deflection system and the phosphor screen.

The first anode has a positive voltage of about a few hundred volts to the cathode. A higher positive voltage is added to the second anode than the first anode. The electron beam that passes through the control of the very small hole is accelerated by the high potential of the first anode and the second anode, and moves at high speed in the direction of the phosphor screen. Due to the repulsion of the charges, the electron beam gradually spreads out. Through the focusing action of the electric field between the first anode and the second anode, the electrons are regrouped and intersected at one point. By properly controlling the potential difference between the first anode and the second anode, the focus falls just on the phosphor screen, revealing a bright and small dot. Changing the potential difference between the first anode and the second anode can play the role of adjusting the focus of the light spot, which is the principle of the 'focusing' and 'auxiliary focusing' adjustment of the oscilloscope. The third anode is formed by coating a layer of graphite on the inside of the oscilloscope cone, usually with a very high voltage, which we will add to 10,000 volts this time. Later, we will look at the circuit that uses an oscillator to generate high voltage. ”

Since the people of Yangchang started from the development of electron tubes, they are no strangers to things like electron tube electrodes, and they are no strangers to electron beam and electron beam deflection. After teaching this part of the course, Zhang Zhimu felt that the effect was better than he imagined. Even students in previous lives may not be able to accept such courses faster than them. Because students in previous lives rarely had access to tubes.

Then Zhang Zhimu told Yangchang about the deflection system in the X and Y directions.

The deflection system consists of two pairs of parallel metal plates perpendicular to each other, known as horizontal deflection plates and vertical deflection plates. The movement of the electron beam in the horizontal and vertical directions is controlled separately.

Controlling their voltage controls the direction in which the electron beam is scanned.

The phosphor screen is located at the end of the oscilloscope tube and its function is to display the deflected electron beam for easy observation. The inner wall of the oscilloscope's phosphor screen is coated with a layer of luminescent substance, so that fluorescence appears at the point of high-speed electron impact on the phosphor screen. Now only zinc oxide phosphor can be applied to the phosphor screen, and of course the light emitted from the screen is green now.

After that, Zhang Zhimu spent a few days explaining to Yangchang the basic principles of vertical and horizontal amplification circuits, scanning and synchronization circuits, power supply circuits, and waveform display.

After the course was finished, Zhang Zhimu was very satisfied with the effect of the course. Yangchang: Their response was quite good. From the questions they asked, Zhang Zhimu knew that they had basically figured out the principle. In fact, Zhang Zhimu couldn't explain many of the questions they asked. The rest of the matter needs to be tackled by Yangchang and them little by little.

Yangchang said to Zhang Zhimu: "Mr. Zhang, we strive to get this oscilloscope out within a year." The good thing is that we can get everything we need to develop an oscilloscope ourselves. No need to ask for help. This saves a lot of effort and time. ”

Zhang Zhimu said to Yangchang: "Don't delay your normal production." ”

Yangchang suddenly asked Zhang Zhimu: "Can we build a shortwave radio station?" Our medium-wave radio can only be heard on the radio near Yaogang, and now it is finally possible to hear it in Taiyuan. If we broadcast with shortwave, then the broadcast can be heard no matter how far away. Of course, the effect is a little worse during the day. But the coverage is much lower. We don't know how many times the market for radios can be. ”

"Yes! So, let's settle on a frequency of 9 trillion to 12 trillion as our shortwave broadcasting frequency. You can also produce dual-band radios. You can broadcast my radio station's programs at the same time on both mediumwave and shortwave frequencies, and we can make two stations in the future. Zhang Zhimu is very sure of Yangchang's idea. The reason why the frequency of broadcasting is set at 9 to 12 trillion is because the shortwave effect of this frequency band is good during the day and night.

Zhang Zhimu is also very happy that Yangchang can use his brain, if everyone can use his brain like Yangchang and them. The development of the kiln will be faster. I hope that those students of Kiln Gang College will have a few of them show their edge in a few years.

Chen Yufeng and Ouyang He rushed back before Jiang Zhuo and the acting king arrived at the kiln.

This time, Yang Jing and Qin Peng followed Chen Yufeng and came back together. Yang Jing basically didn't participate in any big battles this time, just protecting the grain and grass, although he was very depressed, but he knew that such a battle really didn't need too many people to participate in the war. But the matter of grain and grass is so great that if tens of thousands of people run out of food and grass, they will be hungry and starving.

After Chen Yufeng and Ouyang He returned, they gave Zhang Zhimu a detailed introduction to the process of this battle. He also told them about the cultivation of the fields.

The Hetao area originally had a lot of cultivated land cultivated by previous people, but for hundreds of years, the nomadic people of the north and the farming peoples of the south have been fighting here, resulting in a sharp decline in the population here. Much of the arable land has been abandoned.

After Chen Yufeng, Ouyang He and others arrived in Baotou, they carefully investigated. They decided to rely on the two cities of Baotou and Dongshengzhou to establish reclamation sites along the Yellow River. The first problem is to strengthen the Yellow River embankment so that it does not suffer from flooding when the water is high. The second is to dredge the original canal, there is a large area of abandoned land on the bank of the Yellow River, as long as the water of the Yellow River is connected, the land is turned deep with livestock, and it is good land without fertilization.

Chen Yufeng and the others divided the migrants into two parts: one part built embankments for flood control, dredged canals, and plowed deep land; Some of them repaired brick kilns and built reclamation settlements. Fortunately, a large number of Mongol cowhide tents have now been seized. You can set up a tent near the construction site. The most grateful thing for these immigrants is that the kiln workers are thoughtful and equipped with mosquito nets, otherwise the mosquitoes here will not be tolerated.

The immigrants work here in a step-by-step manner, and each of them is not usually highly motivated, and each of them has his own horse, although it can only be used to clear the land. But when the land is opened, they will all be given arable land, and then they will have their own cattle to cultivate. The future is not ordinarily good for them, and it is already in their hands. I went from being empty-handed to carrying silver and my own horse in my pocket, and this is a good thing, and I can wake up happily in my sleep. Originally, the biggest fear here was that I was afraid of those barbaric Mongols, but now it seems that I can't help but fight the Yaogang people at all. It's been a long time since I ran away.

Referring to these, Chen Yufeng showed a smile that is rarely seen and said: "There are a lot of lands, and you can grow vegetables after turning them this year." Don't worry about the dishes of the year. Next year, there will be a lot of land to be planted with grain. It is appropriate for us to go out of the customs this time, and hundreds of thousands of people can be arranged there. With that backing, we don't have to worry about food and war horses. ”

"It's the best pasture, and we went to Wuliangsuhai to see it, it's really vast! The reeds can't be seen. Later, we can organize a fleet of boats to fish there. Ouyang He said.

"Reeds are a treasure, we can build a large paper mill in Baotou in the future, and use the reeds there to make paper. The reed also has the advantage that it will grow next year after being cut this year. Zhang Zhimu said: "We are going to build a paper mill made of wood on this side of the kiln. If we can have a paper mill in Baotou, then our paper will be enough for the entire Ming Dynasty. ”

"Yes! We will use more and more paper in the future. If the reeds of Wuliang Suhai can make paper, it will be even more treasured. Ouyang He said.

Now that Ningde is slowly getting acquainted with the situation there, he proposed a strategy of immigrating to both the army and the people, and we all agree. Because after all, there is a threat from the Mongols. Until the Mongols have completely solved it, they must not let their guard down. In peacetime, military training time should be arranged so that they can all take up arms and fight in wartime. Fortunately, the cadres in our immigrants are all veterans we have trained, and with them, this kind of thing is much easier. Chen Yufeng said.

"Huh! General Ningde still has a lot of ideas. Zhang Zhimu said: "If I don't let him go out, he may go crazy!" ”

The three of them laughed!

"Now General Ningde is like a fish in water!" Ouyang He said with a smile: "As soon as he got there, he learned a little about the situation, and he rode around all day long. He said that he didn't understand the situation and was not sure, and he was a real soldier. ”

"When he was older, I advised him to pay attention to his body, but he didn't listen. He said that the body cannot be exhausted, but it can be idle. Chen Yufeng said: "This time General Ningde has something to do." Now there are Liu Yun, Li Jing, and Fan Chengkun, and they are there. If they come back and he's left alone, he'll be busy. Chen Yufeng said.

"I don't think it's a big deal." Ouyang He said: "After this battle, I think our regiment commanders and battalion commanders are very up-to-the-top. Ningde used them well, so he didn't have to be too tired. ”

"I agree. Especially the veterans of our kiln gang, that self-confidence is not something that can be practiced in a day. Chen Yufeng said with great satisfaction: "They are basically regiment commanders and battalion commanders now." I'm afraid the youngest are all company commanders. ”

After introducing the situation, Chen Yufeng said: "After Ningde passed, we studied the deployment of Li Zicheng's Dashun army in Shaanxi together, and we now have a grasp of the general deployment of the Dashun army. This time, our main goal is to study the situation in Shaanxi. From now, we have a year and a half to prepare for the westward expedition. ”

"Our westward expedition is also a drill to march in other directions." Ouyang He said: "Our westward expedition is likely to change the situation in the whole world. Those who are afraid of us may well unite against us. ”

"The direction in which we march must be kept strictly secret." Zhang Zhimu said: "And when we go on the expedition, we should not make a big show. There are some things we can only say, not necessarily do. There are some things we just do and don't say. ”

"Zhimu is right!" Chen Yufeng said: "This time, we will draw up a detailed plan for the march and draw up a plan for expanding the army according to this plan. We have a year and a half to organize the training of the army. ”

"We need to prepare food, ammunition, clothing, wagons and horses now." Ouyang He said: "After we made our plan, we knew how much we needed. ”

"It just so happens that there are still two months left, and the first batch of students of our Yaogang Academy will graduate. There are a total of 1,200 students originally enrolled, as well as 100 students in the two navy classes that have been expanded. These more than 1,300 people are all our treasures. I decided to stay in school as a teacher and divide half into various units. Military cadets, you can arrange it! Zhang Zhimu said.

Chen Yufeng and Ouyang He listened to Zhang Zhimu's words, and their eyes matched. Ouyang He said: "It's really timely rain! These students caught up with a good time, and one was that they caught up with the battle to defend the kiln. At that time, they all went to the front-line command post for apprenticeship. This is a great opportunity for them. Now it is time for us to expand our army. I also agree that half of them will stay in school as teachers. The faculty of our Yaogang College is still too weak. Qin Peng: They could go to give a lecture, but that was not a long-term solution. However, I hope that the half of the cadets who are assigned to the army will first go to the grassroots level to become battalion and company commanders for training. In the future, if there is a good performance, I will be transferred back to the college as a teacher. Those who remain in the academy should also find appropriate opportunities for them to train in the army. That way, they will know how to teach the students when they go back to the academy. ”

"I don't think we should let them take on too high positions all at once, let them go below to be company commanders, and let them learn how to lead troops." Chen Yufeng said.

"I don't care about that." Zhang Zhimu said: "I think there should be more left in that artillery class, and in the future, our Yaogang Military Academy will set up a special artillery major." There are still many things to do with artillery, and our artillery is just getting started. Zhang Zhimu said.

"It's easy to do!" Chen Yufeng said: "We are in a hurry to come back, and we are still worried about receiving the acting king. Let's study how to receive the king! ”

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The Song army occupied Hokkaido, and Yuankou landed on the island of Kyushu. Opening up the Japanese battlefield. --Progress of "Memories of the Southern Song Dynasty".