Otaku Engineer in Great Tang Dynasty

Remember in one second [End of the God Station] Mobile phone user input address: m.xinwanben.com

On the second day, a piece of good news came from the workshop. The triode was made, and Li Tai used a very rough ammeter to verify that it indeed had the effect of amplifying current. Li Zexuan heard the news and rushed to the workshop immediately. .

"Shangchang, it's done! It's really done! After my preliminary measurement, the current is amplified by about five times after passing through the gate of the triode! If you connect a few more triodes, the magnification can be even greater!"

As soon as he walked into the laboratory, Li Tai greeted him excitedly.

Li Zexuan walked to the test bench and saw that there was a glass tube slightly smaller than a fist on the bench, as well as a rough instrument. This instrument did not even have a casing, and the magnets, springs, wires, and pointers inside were all exposed. Only Some simple fixtures, although Li Zexuan can roughly guess the function of this instrument, the appearance of this thing is really uncomplimentable!

As for the glass tube with a slightly smaller fist, it should be the first triode in the world, because there are still three electrode connectors exposed on the outside of the glass tube, but... this triode is too big. The triodes used by Li Zexuan in his previous life were all semiconductors. (Crystal) triodes are only the size of a fingernail, and with the development of microelectronics technology, the size of some transistors can even be smaller than 10nm. Compared with this, the electronic triode in front of us is called a behemoth.

"Qing Que, you connect to the phone and show me!"

Li Zexuan knew that now was not the time to be picky. After all, it was not easy for Li Tai to make a triode under the current conditions, and it would be a bit embarrassing to ask for anything else. So he pointed to the triode on the table, Tai said.

"Okay! Chief wait a minute!"

Li Tai nodded in response, and then started wiring with his hands and feet numbly. After a while, he turned on the power switch, pointed to the electric meter, and said:

"Look at the cathode terminal, the current is 0.7, I am now connecting the ammeter to the anode terminal...Look, the current has reached 3.8, which is about five times the magnification! This proves the weak voltage on the grid. The signal change modulates the current flowing from the cathode to the anode, so you can get the same current as the input signal change, but with a much higher intensity!"

Li Zexuan saw this series of operations, and at this moment he couldn't help but sighed: "Good! Good! Good! I didn't expect you to make a triode so quickly, Qingque, it's not easy! Now there are With diodes and triodes, and a stable resistor made, the academy can begin to transform the telegraph!"

Li Tai thought for a while and asked, "Shan Chang, the type of resistor you mentioned earlier that is used as a standard resistance has already been made in the workshop, but I think its volume is too large. If you need a larger resistance in the future If it is used in a circuit, it will seriously affect the volume of the entire product. I wonder if there is any material that can replace steel to make a resistor?"

In order to make it easier for Li Tai to make a voltmeter, Li Zexuan proposed that a steel with a length, width and height of one inch can be used as a standard resistor. However, although the electrical conductivity of steel is not as good as that of copper, it is still good. The resistance of iron wire is very small, and it is not suitable for use as a resistor. Most of the modern resistors are made of nickel-chromium alloy, and chip resistors are mixed with metal powder and glass uranium powder and printed on the substrate by screen printing. made resistors.

Based on the current process conditions, these two kinds of resistors are difficult to make. After thinking for a long time, Li Zexuan said:

"Of course there are materials that can replace steel! You can mix carbon black, resin, and clay in a certain proportion, then press the mixture, and then heat it to make sections of resistance rods. The resistance made of this material is stronger than chopsticks. It should be thin, only about a quarter of an inch long, but the range of resistance values ​​can be very wide, which can fully meet the needs of various occasions!”

The resistor he mentioned is called a carbon resistor in modern times, and its resistance value is represented by a color ring on the resistor. The material is cheap, the cost is low, and the resistance range is wide, but the performance is poor, and it is rarely used. It is basically replaced by metal film resistors and chip resistors with more stable performance in the market.

However, for the current Datang, it is already quite remarkable to have carbon resistors!

"Carbon black, resin, clay? Shanchang, can the resistors made from these things work?"

Li Tai was stunned for a while after hearing this. He used carbon black, resin, and clay as resistors. No matter how he heard it, he felt unreliable!

Li Zexuan smiled slightly and said, "Why can't this be used? Not only can it be used, but it is also very useful! If you don't believe me, Qingque, you will find a craftsman in the workshop later to help you try to make a batch of such resistors. You'll know when you come out!"

Li Tai scratched his head and said, "Okay! Then I'll find someone to try it out later!"

Li Zexuan nodded and said, "Yeah! That's the deal! This afternoon, I will officially announce the launch of the second and third killer projects at the academy, and you will also participate in the meeting, Qingque!"

"Ah? Chief, what can I do if I go to this kind of meeting? If I don't go, I still have a lot of things to do here!"

When Li Tai heard this, he quickly shook his head.

When it comes to major projects such as the killer project, it is basically led by the academy's husband, and the students only play the role of assisting and starting. Li Tai thinks it is better for him not to participate in this kind of meeting, which is a bit of a waste of time!

Unexpectedly, Li Zexuan still insisted: "Qing Que, you must go to this meeting this afternoon. After all, the two killer projects in the back cannot be without you!"

After all, he left without waiting for Li Tai to react.

"I can't be without me? What does the Chief of the Mountain mean?"

Li Tai's eyes showed doubts, and gradually, he suddenly thought of something, and couldn't help feeling a little excited in his heart.

…………………………

"Today I convened all the gentlemen to hold this meeting, mainly because I have an important thing to announce!"

Before three minutes, all the teachers of the academy were summoned to the large conference room on the first floor of the Guanghua Building. As for the students of the academy, the first two sessions in the afternoon were naturally changed to self-study. After the lectures are over, the students just need time to review. Seeing that the teachers are all here, Li Zexuan said in a deep voice.

Seeing that Li Zexuan was so serious, everyone couldn't help but raise the spirit of twelve points, waiting for the following.

Li Zexuan said: "All the gentlemen here have passed the academy's confidentiality examination and signed a confidentiality agreement. Today's meeting is a top-secret meeting, and the minutes of the meeting are directly classified as top-secret documents. After the meeting, Mr. Yan will send someone to file and lock it. Save, and what you have heard in a while, are not allowed to leak to others, including your family members, and those who violate the law will be handed over to Dali Temple for treason, and I hope you will take it seriously!"

Hearing this, everyone's faces couldn't help becoming serious. Since the academy established a strict secrecy system, there has never been a top-secret incident. You must know that top-secret technology is related to national security. With life and death, no document is easily defined as top secret, but it can be seen that today's meeting is of high standard and important content!

Everyone bowed their hands solemnly: "Yes! Chief! I will strictly abide by the confidentiality system of the academy, and will never leak the content of today's meeting!"

"Okay! The official meeting is now!"

Li Zexuan nodded and said solemnly: "To call you here today, I want to inform you that starting from today, the second and third trump card projects of Yanhuang Academy will be officially launched. Yes, you heard right, it's two trump cards. The project is approved at the same time!"

All the academy students present felt incredible. At the beginning of the year, Li Zexuan proposed a 100 killer project plan for Yanhuang Academy, and took Bahe Hydropower Station as the first killer project. Until now, this first killer project has not been completely completed. Because the later work of the hydropower station has not been completed, but now Li Zexuan has directly proposed two killer projects. In the eyes of everyone, the progress is really too fast!

And at the beginning of the meeting, Li Zexuan defined these two killer projects as top-secret projects. This high standard made the gentlemen of the academy feel dignified!

"Captain, what are the contents of the second and third killer projects? Will it be too stressful to carry out at the same time?"

Mo Huai couldn't help asking aloud.

Everyone else also turned their attention to Li Zexuan.

Li Zexuan replied: "Of course there is pressure, but it must be overcome. I have ample reasons for choosing to establish two killer projects at the same time. Now let me talk about the specific tasks of these two projects!

The second killer project is to improve the current telegraph. One is to add a signal amplification circuit to the telegraph to increase the transmission power of the telegraph; the second is to install a detector for the telegraph to identify useful information in electromagnetic waves. , to enhance the signal recognition ability and anti-interference ability of the telegraph; the third is to build a telegraph relay station in key states and counties, which will be used as a relay for the transmission and reception of electromagnetic waves, and further increase the communication distance of the telegraph!

The ultimate goal of this killer project is to increase the effective communication distance of the telegraph to more than a thousand miles, or even further! The key electronic components required in this project have already been prepared in the workshop. Those involved in the project can go to the workshop for details later! "

"The communication distance is one kilometer!"

Hearing this indicator, everyone present couldn't help but take a deep breath. Sound transmission from a thousand miles, this is really equivalent to a sound transmission from a thousand miles! If this was left in the past, if they heard this, they would definitely sneer, but in the past year in Yanhuang Academy, they have seen too many unbelievable things, so even if the gentlemen think it is unbelievable at the moment, there is no one Rebut it!

Seeing everyone's unbelievable expressions, Li Zexuan smiled and said, "Although this sounds a bit bizarre, but you have been in the academy for so long, and you have a certain understanding of engineering, especially the gentlemen of the physics group, you should be clear, The goal I just said is not completely impossible to achieve, right?"

The physics gentlemen around Mo Huai were all hesitant and their faces moved.

Mo Huai cupped his hands and said: "Shan Chang just said that it is not completely impossible. The crux of the question is, does the workshop now have devices that can perform power amplification and electromagnetic wave detection? If so, with a communication distance of a thousand miles, there are It's possible!"

Li Zexuan said with a smile: "Mr. Mo, don't worry, now everything is basically ready, and I only owe Dongfeng! Now I will talk about the third killer project! From now on, the academy will set up a measurement standards committee, and I will be responsible for it. The president, Mr. Xu Hongzhi, Mo Huai, and Wang Ji are the vice presidents. The purpose of establishing the Measurement Standards Committee is to formulate measurement units and measurement standards for some new physical quantities, such as current, voltage, resistance, etc.!

This third killer project first requires the three physical quantities of current, voltage and resistance to formulate measurement units and standards, and to make measuring instruments. In addition, I plan to reformulate the unit of length, from small to large, they are millimeters, centimeters, decimeters, meters, and kilometers. Among them, 3.07 meters is equivalent to the current ten feet.

One meter is equal to ten meters, one hundred centimeters, and one thousand millimeters. According to this conversion relationship, the academy needs to make new measuring rulers.

In the future, all the projects of the academy will use this new unit of measurement, which is conducive to more precise production!

The reason why two killer projects should be established and carried out at the same time is mainly because there are many cross-links in these two projects, which can play a role in promoting and promoting each other! "

(According to literature records, one zhang in the Tang Dynasty is about 3.07 meters)

As soon as the voice fell, there was a faint "buzz" in the conference room.

Li Zexuan only needs to formulate units and measurement standards for new physical quantities. He even has to change the unit of length that has been deeply ingrained in everyone's mind. This is a bit difficult to adapt to!

But the reason given by Li Zexuan is too strong, because the new unit is indeed more precise than the previous inch, chi, and zhang, and it is also more conducive to precision machining and precision production.

"Haha! I know that everyone may not be able to accept the new unit of measure for a while, but in the future, when you participate in precision manufacturing projects, you will know the benefits of this new unit of measure!"

Seeing the unacceptable expressions on everyone's faces, Li Zexuan enlightened with a smile, and then said solemnly:

"Next, I will announce the personnel appointments for these two killer projects! Mr. Mo Huai will be appointed as the chief designer of these two killer projects, and Li Tai, Mo Chui, and Xu Hongzhi will be the deputy chief designers, and they will be transferred to the academy as soon as possible. Students and teachers with outstanding achievements in mathematics and physics, join these two killer projects! The deadline for these two tasks is half a year, and within half a year, be sure to achieve the set goals!"

A stone was shocked by a thousand waves. When the words came out, everyone was stunned. At this time, the gentlemen of the academy noticed that Li Tai had been standing behind Li Zexuan, and asked a student to be the deputy chief engineer of the killer project, Li Zexuan. Is it crazy?

………………

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