Chapter 249 "Produce chips yourself?" Rosie and Ranni were almost stupid, after all, what Hu Wenhai said was like a fantasy.Normally, of course, chips must be produced, not from any tree.

Chips can be divided into two types, one is a special chip, and the other is a general-purpose chip.

The application area of special chips is relatively narrow, and it is developed to solve a specific problem.

But even if it is a special chip, a chip must be supported by a huge number.

But you're not a drone project, it's not a nuclear submarine atomic bomb, it's not a new fighter jet, it's not a supercomputer.

Just for a drone, you produce a chip yourself?

I didn't do that!

The manpower and time required for a chip from design to tape-out to production is quite large.

If you really want to talk about big projects, such as military missiles, you can make hundreds or thousands of pieces regardless of the cost.

But if you have a drone that doesn't even cost one million yuan, you have to develop a chip, and it is also invested by a private enterprise, can you recover the cost?

Okay, even if you Hu Wenhai is rich, it's not bad for this money, capricious!

But is it so easy to improve the performance of a thyristor at the chip level, reducing its size and heat dissipation?

If it were that easy, thyristors were a technology in the fifties and sixties, and there was no fundamental progress for more than 20 years?

No matter how you think about it, I feel that Hu Wenhai is blowing nonsense, and he came before he opened his mouth.

Hu Wenhai saw that everyone present looked unconvinced, and he could only spread his hands helplessly: "Okay, you all go to do other work." Find me ten no, twenty people, arrange a quiet space, and talk about this in two days. ”

Although 10,000 people don't believe it in their hearts, the drone project was organized by Hu Wenhai after all.

In this R&D team, what he says is the final decision.

In addition, Hu Wenhai's various miraculous expressions in the past.

The crowd then dispersed in suspicion.

Rosie hurriedly asked people to gather a hand-made printer for Hu Wenhaila, and then emptied a conference room and prepared a stack of engineering drawings and drawing boards.

Hu Wenhai stretched his waist and touched the familiar and unfamiliar drawing sleeves and pencils, these tools he had not touched for a long time after he had a computer in the future.

He first drew a few circuit diagrams at random to practice, and then looked for the feel.

I began to bury my head in drawing.

He is dedicated to his work here, but a group of people working outside are frequently distracted.

There is no way.

The curiosity was too strong, and everyone wanted to know how Hu Wenhai planned to solve these problems of thyristors.

However, Hu Wenhai lived in the studio for three days, in addition to eating and sleeping, he commanded a group of people to write and draw on the drawings.

I saw that the drawings were drawn one after another, and everyone did not go out of the door, and they didn't even talk to people more than three times at a time.

In this way, the drawings that soon piled up were more than one person could move.

"Hasn't Mr. Hu come out yet?"

Ran Ni walked into the computer room full of heat and secretly glanced in the direction of Hu Wenhai's workshop.

In these two or three days.

There are really all kinds of remarks flying in the 601 Institute.

There is no doubt that there is a need for rectifier equipment on the aircraft, especially for fighter jets, high voltage and high current are common, who does not know the various faults of thyristors?

But if you want to improve these problems, even foreigners have no good way, but Hu Wenhai has made this kind of high-tech technological progress as if there are three days left in the summer vacation of elementary school students.

I didn't do the same homework...... Although the rabbit family often explodes like this, it scares the Ban Ying sauce next door "incredible"

It's almost a mantra.

But after all, children from poor families are not as rich and handsome as the rich, and for the time being, they still eat more soil.

In other words, some areas in the country can "chase" in a bend

The tail is mostly because of the late-mover advantage.

Foreigners can't handle high technology, and China naturally doesn't even dare to think about it.

Being able to catch up with the international advanced level is quite remarkable progress in China.

But these days.

Many 601 people have secretly flipped through the foreign periodicals and magazines in their hands, and there is no direction that can solve the problems of thyristors.

In other words, what Hu Wenhai is doing now is an out-and-out "international leader"

Technology.

If it weren't for Hu Wenhai, who is now the God of Wealth of 601, I don't know how many "self-measures"

Such remarks have been quietly circulating.

Even with such an aura, Wenhai Studio is in the eyes.

There are some waiting ingredients, too.

Just because you're rich and talented doesn't mean you can do everything well.

"Oh, when I delivered the meal just now, Mr. Hu had already asked me to contact a unit that could tape out. ”

Rosie looked up from the computer, his condition was not much better than Hu Wenhai.

To complete the "eye of the needle" in a short time

The design of the drone, the people of all project teams are under a lot of pressure.

If it weren't for the spirit of dedication to work, he would not have been able to complete the simulation software development of the general section shipbuilding method in more than half a year.

"Can it be taped?"

Ranni's eyes lit up and she smiled happily.

It's been a really hard time these days, although the people of the 601 Institute don't say anything, there is always a special meaning in the eyes of the people who come from the city.

It's kind of like "these whimsical laymen, we're going to have to wipe our butts at the end"

The wordless anticipation.

Unconsciously, Ran Ni also hopes that Hu Wenhai can really make some achievements, so that 601 people can impress a chip from idea to reality, and the most time-consuming is the design stage.

And to be able to "tape out"

, which means that the design has entered the final stage and is ready for production.

The so-called tape-out refers to the "mold" used by the lithography machine to lithography on silicon wafers in chip production

。

Although it feels incredible, Ran Ni still hopes that Hu Wenhai can create a miracle.

"Director Ran is back!"

Hu Wenhai, with a bird's nest-like hair, stepped out of the conference room for the first time in three days, causing a whispering sound to sound in the computer room.

After greeting Ran Ni, he turned his head to the west and asked, "Luo Gong, I want you to arrange to find a real room that can be taped, how is the matter?"

Luo Xi hurriedly said: "The leaders of the Commission of Science, Technology and Industry for National Defense helped to contact it, and it happened that there was a real room in Shengjing that could do tape-out work." ”

"Okay, is it too late?

Hu Wenhai is a hands-off shopkeeper at work, although Rosie is not the material for outreach.

It's only reluctant.

"Mr. Hu, wait a minute, I'll make a phone call and contact someone"

"Hurry up, I'll have someone get the car ready!"

Hu Wenhai walked out on his feet, asking Wang Ye, who was waiting in the corridor, to arrange a van.

These days, he can't feel his drawing hands anymore, and he misses the days when he could use CAD.

But the results are also very gratifying, and the drawings are stacked up, maybe they weigh hundreds of pounds.

...... Stacks of drawings were moved out of Hu Wenhai's room.

This made many people in the 601 Institute put down their work and secretly leaned on the window.

The inquisitive Wenhai commander loaded the drawings onto the van.

"Hey, don't say anything else, this Hu Wenhai's ability is really powerful. It's only been a few days, and so many drawings have come out?"

"Circuit diagram, you should be our mechanical diagram. How much does it cost to draw a line and mark a symbol?"

"That's pretty impressive. ”

"You say, how old is this Hu Wenhai, really has such a genius?"

can work in a national key institution like 601, which is not a true scholar.

The literati are light.

Immediately, someone scoffed.

"What do you think, I'm busy!, in the end, we must clean up the mess. For such a large drone, it has to stay in the air for four hours, how much fuel must be prepared? There is so much space left for avionics, and a group of laymen from Xiucheng and rural areas have no idea what the aircraft design is all about. ”

"yes. There is a way to reduce the volume of thyristors for heat dissipation, which people abroad have long used, which round is on us. ”

"I was carried away by my past achievements, thinking that I could do anything. ”

"I am, Hu Wenhai is young after all, and it is good to be educated and educated by a little setback. ”

Engineers of several 601 institutes.

Stand behind the window and whisper.

It wasn't until Hu Wenhai's van disappeared at the gate of 601 that they dispersed to do their own work.

Hu Wenhai walked away and didn't see anyone for a full week.

Just when the gossip was flying, a Poussin car quietly drove into the compound of 601.

Poussin stopped inside the gate of 601, the driver's door opened, and a half-haired elegant man stepped down.

"Dean Luan, what kind of wind is blowing you here!"

Director Gu took a few steps.

smiled and stretched out his hand.

Luan Zhenzhang is an old friend he met in the Shengjing Association for Science and Technology, the vice president of Shengjing University, and he is at least at the top level of department-level leader.

Today, I don't know what kind of wind it is, but it actually blew him to 601.

"Old Gu, let me introduce you-"

After shaking hands with Director Gu, Luan Zhenzhang hurriedly waved his hand and pointed at a middle-aged man who came down from the back seat.

"This Secretary Lu, do you still remember the director of the Fuxin Power Plant in 65 years? Secretary Lu served this chief. ”

Director Gu recalled a little, and his eyes lit up suddenly.

He stretched out his hand again and shook it solemnly.

"Secretary Lu has worked hard from afar, please come in. I don't know what kind of work you have come to our 601 Institute?"

"Director Gu doesn't care about me, I'm just here to watch. ”

Secretary Lu smiled and hurriedly said, "I asked Principal Luan to be a witness, and he still knows more about some technical issues." As for the purpose of my visit—"

Didi-A van stopped at the gate of the 601 Institute, and Hu Wenhai popped his head, waved his hand, and smiled heartily.

"Yo, isn't this Secretary Lu? I haven't seen you for a long time!"

Chapter 250 IGCT "Director Gu, I am here for Comrade Hu Wenhai. You just treat me as if I don't exist, don't reveal my identity. ”

Secretary Lu gave Director Gu an instruction, and turned his head to greet Hu Wenhai.

After he sent the research report in Xiucheng, the attitude of the above seemed to be a little surprised - or rather, no reaction at all.

It was as if he had never sent a report like that.

Of course, Secretary Lu, who has been with the leader for a long time, knows that this situation shows that he is still hesitant to contact Hu Wenhai.

Soon, however, an order brought him back from the imperial capital to Bohai Province.

The job of this business trip is to work with Vice President Luan of the University of Tokyo to identify a certain technology completed by Hu Wenhai.

Secretary Lu himself is just a witness, and the real conclusion is that Vice President Luan, who has some friendship with the leader.

As a colleague in the power system back then, there is no doubt that the leaders have more confidence in Vice President Luan's technical ability.

And Secretary Lu reminded Director Gu not to publicize his identity.

Apparently gave him a hint of something unusual.

Hu Wenhai exchanged a few words with Secretary Lu at the door, obviously he had known about this arrangement for a long time, and it was not strange that Secretary Lu appeared here.

After reminiscing about the old days, Hu Wenhai jumped back into the van, followed by Secretary Lu's Poussin, pulled Director Gu and his entourage, and walked towards the "501 Institute" drawn out by 601

Direction.

Along.

People who saw Hu Wenhai's van again couldn't help but whisper, surprised that they had seen him again in only a week.

According to what some people think.

Hu Wenhai either couldn't figure it out, and he didn't have the shame to see Jiangdong's father run away, or he couldn't solve it by himself, so he went to other experts for advice.

Neither of these two roads can be completed in a week.

In fact, some people even opened a handicap, betting that he would not dare to return to the 601 Institute to show up after a few months.

The vast majority of people regard him as a typical example of braggart and blowing.

As for those "geniuses"

"Miracle"

Such rumors are regarded as rumors such as perpetual motion machines and water to oil.

The so-called support of the state and the attention of the higher leaders.

It is assumed to be an "old revolution" which was confused

He was fooled by him -- just like so many old leaders in society who believed in qigong.

No one expected that Hu Wenhai would come back generously in that van just a week later.

Although there was no noise in the yard, the rumors in the corner were faster than cars.

By the time he drove back to the gate of the 501 Institute, there were already inexplicably more uninvited people in the office.

"Mr. Hu is back!"

Hearing the human voice, Rosie, who had been working hard, was shocked and his eyes lit up.

Immediately laughed.

"Luo Gong has worked hard, has the progress been smooth recently?"

Hu Wenhai took a deep breath, as if the energy in his body had returned.

To be honest, he has a little bit of a relationship with Rosie.

This person is a bit intellectual, unwilling to talk about money, and has some knowledge for those who have no knowledge.

He's a man.

Some poor and sour meaning, although the work is done well, but the ability to organize and lead the team is very lacking, and it is a bit machismo, looking down on or subconsciously thinking that women should be women

The work done is good.

However, he has one good thing, and that is that he is very engaged in his work.

If the work is not done, it seems that there is nothing else in his world.

In the face of such subordinates.

Hu Wenhai is really mixed.

Needless to say, having such employees is really a blessing for the boss.

It's a little hard to talk about worrying, you are so capable, and the boss has to follow you to do it...... No, in the face of Rosie, who was not in the line of fire, although Hu Wenhai had rushed to work for a week, he still worked hard to cheer up.

"It's okay, thanks to the network technical information left by Mr. Hu. ”

Although Rossi looked tired, he spoke with enough energy, as if he didn't feel the slightest hardship: "There is no problem with the exchange of bus and number jù, and it can be transmitted remotely through guò digital signal, which is still a little difficult." In terms of digital-to-analog conversion technology, Motorola's technology is much worse than Deyi, but we don't have enough information about Deyi. ”

"Then let's put that in that a minute. ”

Hu Wenhai said simply: "When I finish dealing with the thyristor problem, I will start to solve the matter of wireless communication networks." ”

"Good. ”

Rosie nodded.

The large cardboard box held by the two staff members behind him Wenhai asked with great interest: "Mr. Hu, is this the equipment that can solve the thyristor problem?"

"Yes, this is an integrated gate commutation thyristor. ”

Hu Wenhai beckoned, asked people to put the cardboard box on the table, and then watched, and said to Rosie: "Luo Gong, there is still time for today." You ask the engineer in charge of the structure to come over and let's do some modifications to the electrical part together. ”

"Okay, I'll go. ”

Although extremely curious, Rossi quickly ran out of the real yàn room and went to find the engineer in charge of the structure 601.

...... "What are you kidding, reducing the volume and heat dissipation of the thyristors? This is impossible, with this kind of technology, we have long used it in the Jian-8 fighter." ”

Liang Hongwei, the engineer in charge of the structure, was full of disbelief, but he still couldn't spare Rossi's stubbornness, so he pulled him over.

"Aircraft structure design is science! Science understands? What age? It's also a satellite set. The way for you to think about this part is to cut which part of the function to save space for the thyristor. It's not a godly chatter, a thyristor that reduces the volume and heat dissipation. ”

"Oh, you're there, Director. ”

Director Liang Hongwei put away the impatience on his face and had a lot of rules.

However, the complaint is still no less: "You are a master of aircraft design." Just don't follow the laws of science, and you don't give an opinion?"

Say. ”

Director Gu waved his hand.

Didn't say much.

Seeing Director Gu's attitude, Liang Hongwei also put away his dissatisfaction and nodded helplessly.

A section of the fuselage of the drone was laid out, presumably in the front half of the aircraft.

In order to stay in the air for a long time, the needle-eye drone needs to carry a large amount of fuel.

Considering the dynamic weight variation of the fuel, it is generally necessary to put the fuel tank on the center of gravity.

In this way, the second half of the aircraft is made up of fuel tanks, generators, batteries, and engines.

The first half of the aircraft is dominated by various sensor processor networks and electronic power equipment.

In order not to affect the center of gravity of the aircraft, each piece of equipment for each subsystem is added or subtracted.

Structural engineers must be used to make detailed calculations, especially for UAVs, which are small in size and difficult to leave redundant technical indicators.

"Alright, here we go"

Hu Wenhai opened the cardboard box and took out a circuit board the size of an album from it.

Above is a metal disc embedded in the PCB board, surrounding this disc.

The various patches and components are like neatly arranged armies, full of harmonious beauty.

"This is an integrated gate commutation thyristor?"

Not only Rosie, but everyone present stretched their necks, and Wen Hai, who was full of curiosity, held this thing in his hand.

"What's the use of it?"

Director Gu was curious, pointed to the metal disc in the middle and said, "This is the thyristor, there is no difference from the original." ”

"Yes, there is no difference. It's just that it can realize the full functionality of the thyristor better and faster. ”

Hu Wenhai nodded.

IGCT and IGBT may have some things to figure out in terms of function, but the technical context of IGCT is from thyristor to GTO, and it has always been a control and improvement of thyristor.

Unlike IGBTs, which use insulated-gate bipolar transistors, thyristors are no longer the same foundation.

On IGCT, of course, it can also look like a thyristor.

What really revolutionized it was the integrated gate commutation technology.

To put it simply, it integrates a hard gate drive circuit with gate commutation capability.

Because of its drive voltage drop, the gate commutation speed is greatly improved.

The principle of IGCT is the same as that of thyristors and GTOs.

However, this led to the reduction of energy consumption, and the supporting functions of the thyristor were integrated into the chip, and finally a large number of rectifier and heat dissipation equipment that occupied a lot of land became a circuit board the size of an album and album, and there was almost no need for heat dissipation.

In principle, IGCT can be said that as long as there is GTO technology, the next step is a question of thinking.

In history, no one has ever thought of this idea.

When ABB finally had a flash of inspiration, IGBT was born within a few years, and it just stole the limelight belonging to IGCT.

But in any case, even in the world, even in China, even in the world, there is only one German company that has just been studied.

IGCT can be said to be a real "black technology" that has led the world for two generations

Finish.

As long as Wen Hai finished speaking, almost everyone around showed disapproving expressions.

Such a large circuit can realize the full function of the entire thyristor rectifier system, which is almost unimaginable for them.

However, Hu Wenhai didn't take care of their senses, beckoned Rosie, and the two of them began to install the IGCT circuit board on this section of the fuselage.

In fact, because the integration level is almost the highest range of thyristor rectification, there is almost no difficulty in installing IGCT, on the contrary, it is very easy.

Connecting the lines that simulate the current and electricity that needs to be rectified, under the skeptical and worried eyes of everyone, Hu Wenhai happily pressed the power-on button in his hand...... (To be continued.)

PS: Ah, I'm sorry everyone, but I want to take a day off tomorrow and plan to go to a nearby hot spring with my family to relax!

Welcome to 2016!

Table ...... Finally, Fat Week is here, and I wish readers and friends a new beginning and a happier life in 2016!

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