Hand rubbing nuclear fusion live in the wilderness

Chapter 179 Silicon Carbide

After Han Won mentioned the transistor computer, discussions started in the live broadcast room.

[Transistor computer?what? 】

[Transistor - the foundation of the information age in the 21st century - one of the greatest inventions of the 20th century. 】

[Speaking of transistors, I remembered the diodes and triodes I learned in college, and my scalp was numb. 】

[I just learned about analog electronics two days ago, and I didn't expect to see someone talking about transistor computers on a live broadcast platform. 】

[At the beginning, in order to understand the triode, I decided to study semiconductor physics, and then found that to study semiconductor physics, I need to study quantum mechanics first, and then quantum mechanics uses complex vector spaces... Now I am studying linear algebra. 】

[Good guy, the god-man upstairs, dare to ask if you graduated? 】

[Linear algebra is a real vector space, you have to study matrix theory upstairs]

[Model, I think of the fear of failing the exam in the model ∑(°Д°ノ)ノ. 】

Seeing the nostalgia on the bullet screen, Han Yuan couldn't help laughing, and he also remembered the scene of failing in college.

But what he was talking about was not mathematics, but C language and concepts.

The C language is okay, Mao Guai is the thing that kills people, a lot of knowledge points to memorize can torture people to death.

What's more, this class actually has 6 credits! ! ! !

When he came back to his senses, Han Yuan smiled and continued:

"Transistor computers are the second generation of computers in the history of computer development."

"Compared with the bulky volume of the first-generation electronic tube computer, the transistor computer uses smaller transistors, which makes the overall size of the computer infinitely smaller."

"At the same time, transistor computers are more suitable for software technology than electron tube computers, and the concept of computer systems that cannot be operated on electron tube computers was born. In addition to assembly language, high-level programming languages ​​such as Ada, FORTRAN, and COBOL have also been developed. , so that the work efficiency of the computer is greatly improved."

"All of these make transistor computers thousands of times stronger than tube computers."

After a pause, Han Yuan took out a piece of black material from the experimental materials brought over, and continued:
"And when it comes to transistors, there must be something that cannot be bypassed."

"That's 'semiconductor.'"

"A semiconductor is a material whose conductivity is between that of a conductor and an insulator, and its conductivity is in the range of 10 (U-3) to 10 (U-9) ohms/cm."

"It is precisely by utilizing the special properties of semiconductor materials that we can manufacture semiconductor devices with various functions.

"It is precisely because of the invention of semiconductors that the glory of the information age has come."

As soon as the voice fell, the live broadcast room became lively again.

[Semiconductor, I am familiar with this. 】

【silicon! 】

[Silicon chip! 】

[Silicon is not the only semiconductor. There are many types of semiconductors, such as germanium, silicon, selenium, boron, tellurium, and antimony. 】

【semiconductor. . .Isn't it a radio? 】

[Only half can conduct electricity (dog head)]

[Harm, just say that the redstone repeater is not good. 】

[If you talk about redstone repeaters, don't go, let's play together. 】

Seeing the audience discussing the types of semiconductors, Han Yuan said along the way: "Semiconductors occupy a very important place in human society."

"There are naturally many varieties."

"However, they can be roughly divided into three types."

"The first is the elemental semiconductors, germanium, silicon, selenium, boron, tellurium, antimony, these are all."

"Among these materials, silicon is probably the most familiar to everyone."

"After all, most of the integrated circuits in various electrical appliances in life are made of silicon materials."

"However, elemental semiconductors still have some defects in some applications, such as the poor high temperature resistance and radiation resistance of the most primitive germanium semiconductor devices."

"So later, a second semiconductor was invented through artificial compounding."

"Compound semiconductors."

"Compound semiconductors are semiconductor materials formed by combining two or more elements."

"Such as gallium arsenide, indium phosphide, indium antimonide, silicon carbide, cadmium sulfide, and gallium arsenide silicon."

"What I have in my hand is silicon carbide, which is also the main material I used to make transistors this time."

As he said that, Han Yuan showed off the black blocky substance in his hand.

The material is not large, slightly larger than a normal adult man's fist, the whole body is pitch black, with countless protrusions showing hexagonal crystals, and the surface has the same luster as glass and diamond.

This was made during the last first-level mission to manufacture the ZS-522 high-temperature protective coating. At that time, not all of it was used up, and there was a little left, which he put away by the way.

After showing the material in his hand, Han Yuan continued: "Of course, the silicon carbide in my hand is only a rough material, and it also contains impurities such as aluminum oxide and iron oxide."

"I still need to process it and make it into a silicon carbide wafer with higher purity before it can be applied to the preparation of transistors."

As he spoke, he crushed the silicon carbide material in his hand, then used a grinding body to grind it into a fine powder and poured it into a crucible.

This thing was named 'Electric Crucible' by him, and it was made during a first-level mission.

There are many materials used, including ferrochrome alloy, high temperature resistant material, and ZS-522 high temperature resistant protective coating.

And unlike other furnace crucibles, this small ferrochrome crucible used in the laboratory is not heated with ordinary chemical fuel.

He uses electricity for heating.

Use the 'Electric Crucible' together with the 'Electric Heating Melting Furnace' and 'Resistance Thermometer' he made in the first level task.

In the case of adjusting the current size and voltage level, he can precisely control the high temperature.

Compared with the past, which can only judge the temperature through some physical methods, the resistance thermometer can measure the accurate temperature.

However, there are still some defects. After all, it is a resistance thermometer, which can only judge the heat and temperature generated by the current through resistance.

It has no effect on the high temperature produced by chemical fuels such as oil and charcoal.

In addition, this set of electric heating equipment has an unusually large demand for voltage and power.

In order to ensure the normal operation of this whole set of electric heating equipment, South Korean Won also separately manufactured a hydroelectric generator and transformer for it.

Compared with normal generators, this power generation device that provides power to electric heating equipment is almost the design limit of the dam's power generation.

After all, this is just a small river, no matter how it is regulated through gears, there are limitations on the speed and power generation.

As for building a few more generators and then connecting the electricity to the grid, I also considered it, but I gave up later.

One is that the electricity generated by the current generator is still enough, and the other is that the hydropower generation of the small river has a limit.

Moreover, the grid connection of electricity is quite complicated, so it is better to build several more generators and transformers, and then supply power to fixed laboratories and work independently.

It can also prevent the entire power grid from being burned in case of an electrical accident.

(End of this chapter)