Otaku Engineer in Great Tang Dynasty Chapter 1451: The project is officially established!

On the second day, there was a good news from the workshop. The transistor was made, and Li Tai used a very crude ammeter to verify that it did amplify the current. Li Zexuan heard the news and rushed there. The workshop.

"The mountain grows, it's done! It's really done! After my preliminary measurement, after the current passes through the gate of the transistor, it is almost amplified by about five times! If you connect more transistors, the magnification can be even higher. Great!"

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

Li Zexuan walked to the test bench and saw that there was a glass tube slightly smaller than a fist on the bench, and a rough meter. The meter did not even have a casing, and the magnets, springs, wires, and pointers inside were exposed. Outside, there are only some simple fixing devices. Although Li Zexuan can roughly guess the function of this instrument, the appearance of this thing is really unflattering!

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

"Bluebird, I will see if you plug in!"

Li Zexuan knew that this is not the time to pick and choose. After all, under these conditions, it is not easy for Li Taineng to make a triode. It is a bit embarrassing to ask for something else. So, he pointed to the triode on the table. , Said to Li Tai.

"Okay! Wait a minute for the mountain length!"

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

"Shanchang, you see, the current at the cathode end is 0.7, I now connect the ammeter to the anode end... Look, the current has reached 3.8, which is almost five times the magnification! This proves that the current on the grid The weak signal change of the voltage can modulate the current flowing from the cathode to the anode, so you can get the same current as the input signal change, but with a greatly increased intensity!"

This series of operations, Li Zexuan saw in his eyes. At this time, he couldn't help but sighed: "Good! Good! Good! I didn't expect Qingque you to make a triode so quickly. It's not easy. Now that we have diodes and triodes, and making stable resistance resistors, the Academy can begin to transform the telegraph machine!"

Li Tai thought for a while and asked, "Shan Chang, the workshop has already made the type of resistor you mentioned before as a standard resistance, but I think it is too big. If you need to change it later, A resistor with a large resistance will have a larger volume. 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 as a resistor?"

Previously, in order to facilitate Li Tai's production of voltmeters, Li Zexuan proposed that a steel of one inch in length, width and height can be used as a standard resistance. But speaking, although the conductivity of steel is not as good as that of copper, it is still Good, the resistance of a piece of iron wire is very small, and it is not suitable to be used as a resistor. Modern resistors are mostly made of nickel-chromium alloys. The chip resistors are made of metal powder and glass uranium powder and printed by screen printing. A resistor made on a substrate.

As far as the current process conditions are concerned, these two types of resistors have certain difficulties to be manufactured. After thinking for a long time, Li Zexuan said:

"Of course there are materials that can replace steel! For the blue bird, you can mix carbon black, resin, and clay in a certain proportion, then press the mixture, and then heat it to make a section of resistance rods. The resistance made of this material, Thinner than chopsticks, 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 a color ring is used to indicate its resistance. Its materials are cheap, low in cost, and wide in resistance range, but with poor performance, it is rarely used. It is basically replaced by metal film resistors and chip resistors with more stable performance in the market.

But for the current Datang, the ability to use carbon resistors is already quite remarkable!

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

Li Tai was stunned after hearing this. He used carbon black, resin, and clay as resistors. No matter how you listened, it didn't feel reliable!

Li Zexuan smiled slightly and said, "Why doesn't this work anymore? Not only works, but 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 This kind of resistance will be known!"

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

Li Zexuan nodded and said: "Yeah! That's the thing to say! This afternoon, I will officially announce the launch of the second and third killer project at the academy, and you will also attend the meeting at that time!" /

"Huh? Shan Chang, what can I do if I go to this kind of meeting? If I don't go or not, there are a lot of things on my side!"

Li Tai quickly shook his head when he heard it.

When it comes to major projects such as the killer project, it is basically led by the academy's gentlemen. The students only play a role in assisting them. Li Tai feels that he should not participate in this kind of meeting. It is a waste of time!

Who knows Li Zexuan still insisted: "Qingque, you have to go to this meeting this afternoon, after all, you can't do without you for the two killer projects behind this!"

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

"I can't do without me? What does Shan Chang mean?"

Li Tae was puzzled. Gradually, he suddenly thought of something, and he couldn't help but feel excited.

...........................

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

In three quarters, all the teachers of the college were summoned to the large conference room on the first floor of the Guanghua Building. As for the students of the college, the first two sections of the afternoon were naturally changed to self-study. Anyway, it is near the end of the term. The class is basically finished, and the students just need time to review. Seeing that all the teachers were here, Li Zexuan said in a deep voice.

Seeing that Li Zexuan was so solemnly, everyone couldn't help but raised the spirit of twelve points, waiting for the next.

Just listen to Li Zexuan said: "All the gentlemen present have passed the college confidentiality examination and signed a confidentiality agreement. Today’s meeting is a top-secret meeting. The minutes of the meeting are directly classified as top-secret documents. Mr. Yan will send someone after the meeting. File, lock, and for a while, what you hear is not allowed to leak to others, including your family. Offenders will be handed over to Dali Temple for treason. I hope you can take it seriously!"

Hearing this, everyone's expressions could not help becoming serious. Since the establishment of a strict secrecy system in the academy, there has never been a top-secret incident. You must know that top-secret technology is involved. For the security and survival of the country, there will be no documents defined as top-secret level, but it can also be seen that today's meeting is high in specifications and important in content!

Everyone bowed their hands with serious expressions: "Yes! Shan Chang! I will strictly abide by the academy’s confidentiality system and will never leak the content of today’s meeting!"

"Okay! Then the formal meeting now!"

Li Zexuan nodded and said in a deep voice: "I am calling you here today to inform everyone that from today onwards, the second and third assassin projects of Yanhuang Academy have officially started. Yes, you heard that right, yes Two killer projects were established at the same time!"

The scholars present here all felt incredible. At the beginning of the year, Li Zexuan proposed the Yanhuang Academy’s one-hundred assassin project, and used the Bahe Hydropower Station as the first assassin project. Until now, this first assassin project has not Completely completed, because the later work of the hydropower station has not yet been completed, but now Li Zexuan has directly proposed two killer projects. In the eyes of everyone, the progress is a bit too fast!

At the beginning of the meeting, Li Zexuan defined these two killer projects as top-secret projects. This high-level specification made the gentlemen of the academy feel solemn!

"Shanchang, 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 but ask.

Others also turned their attention to Li Zexuan.

Li Zexuan replied: "Of course there is pressure, but it must be overcome. The reason why I chose to establish the two killer projects at the same time, I have ample reasons. 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 other is to install a detector for the telegraph to identify electromagnetic waves. Useful information to enhance the signal recognition ability and anti-interference ability of the telegraph; the third is to build telegraph relay stations in key states and counties to be used as electromagnetic wave transmitting and receiving relays to 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 by more than a thousand miles, or even further! The key electronic components needed in this project have already been completed at 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 taking a breath, Qianli Sound Transmission, which is really equivalent to Qianli Sound Transmission! If this is left before, if they hear this, they will definitely sneer, but they have seen too many incredible things in the past year at Yanhuang Academy, so gentlemen, even if they think it’s incredible, there is no one. Refute!

Seeing everyone with incredible expressions, Li Zexuan smiled and said, "Although this sounds weird, you have been in the academy for so long and have a certain understanding of engineering, especially gentlemen in the physics group. It should be clear that the goal I just said is not completely impossible to achieve, right?"

The physicists around Mo Huai are all hesitant in the catalog, and their faces are moving.

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

Li Zexuan heard the words and smiled and said: "This Mr. Mo just don't worry, now basically everything is ready, I only owe the east wind! Let me talk about the third killer project! From now on, the Academy will establish a Measurement Standards Committee. I am the president, and 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. Wait!

This third killer project, first of all, the three physical quantities of current, voltage, and resistance are required to establish measurement units and measurement standards, and to make measurement instruments. In addition, I plan to reformulate the unit of length, from small to large, which are millimeters, centimeters, decimeters, meters, and kilometers. Among them, 3.07 meters is equivalent to the current one.

One meter is equal to ten meters, one hundred centimeters, and one thousand millimeters. According to this conversion relationship, the academy needs to make a new measuring ruler. In the future, all the academy’s projects will use this A new measuring unit~IndoMTL.com~ This is conducive to more precise production!

The reason why two killer projects are set up and carried out at the same time is mainly because there are many cross-links in these two projects, which can promote and promote each other! "

(According to the literature, one zhang in the Tang Dynasty is approximately equal to 3.07 meters)

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

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

But the reason Li Zexuan gave is too strong, because the new unit is indeed more precise than the previous inches, feet, and feet, and it is more conducive to precision machining and precision production.

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

Seeing the unacceptable expressions on everyone's faces, Li Zexuan smiled and enlightened, and then said in a deep voice:

"Next, I will announce the personnel appointments for these two assassin projects! Mr. Mo Huai is appointed as the chief designer of these two assassin projects, and Li Tai, Mo Chui, and Xu Hongzhi are the negative chief designers. Several of them should be appointed as soon as possible Select students and teachers with outstanding achievements in mathematics and physics from the college to join these two killer projects! The deadline for these two tasks is four months, and within four months, the set goals must be reached!"

A stone shook a thousand waves. Everyone was stunned when the words came out. At this time, the gentlemen of the academy noticed that Li Tai had been standing behind Li Zexuan and asked a student to serve as the vice president of Assassin Engineering. Teacher, is Li Zexuan crazy?

........................