Chapter 249 is beyond my own strength

"Make your own chips?"

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 which tree they grow. 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, an atomic bomb, a new fighter jet, or 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. only helplessly spread his hands: "Okay." You all go and do other work. Find me ten, no. Twenty people came, arranged a quiet space, and talked about it 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.

Coupled with Hu Wenhai's miraculous performances in the past, everyone dispersed in doubt.

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. Touching familiar and unfamiliar drawings, sleeves and pencils, tools he hadn't touched for a long time since he had a computer in the future.

He first drew a few circuit diagrams at random to practice, and after looking for the feel, he began to bury his 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 is too strong, and everyone wants to know how Hu Wenhai plans to solve these problems of thyristors.

However, Hu Wenhai lived in the studio for three days, except for eating and sleeping. It is to command 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. I can'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 the past two or three days, all kinds of remarks have been flying in the 601 Institute.

There is no doubt that there is a need for rectifier equipment on airplanes, especially fighter planes, and high voltage and high currents are common things, and who does not know all kinds of problems with thyristors? However, even foreigners have no good way to improve these problems, but Hu Wenhai has made this kind of high-tech technological progress as if a primary school student has three days left on his summer vacation and has not done his homework......

Although the rabbit family often explodes like this, the "call it incredible" that scares Ban Yingchan next door is about to become 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, most of the reasons why some domestic fields can "chase" the tail are 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.

However, in the past few days, many 601 people have secretly flipped through the foreign periodicals and magazines in their hands, and there is no direction to solve the problems of thyristors.

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

If it weren't for Hu Wenhai, who is now the God of Wealth of 601, I don't know how many remarks such as "not self-sufficient" have been quietly circulating.

Even with such a halo, looking at Hu Wenhai's studio, there is a little bit of an element waiting to see the excitement. 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 design of the "eye of the needle" UAV in a short time, there is a lot of pressure on all project teams.

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 you tape out?" Ranni's eyes lit up and she smiled happily.

It's been really hard to survive these days, although the people of the 601 Institute don't say anything, but there is always a special meaning in the eyes of the people who look at Xiucheng.

It's a bit like the wordless anticipation of "this group of whimsical laymen, we'll have to wipe our butts in the end".

Unconsciously, Ran Ni also hopes that Hu Wenhai can really make some achievements, so that the people of 601 can be impressed.

From the idea to the realization of a chip, the design stage takes the most time. And being able to "tape out" 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, Ranni 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, making a whispering sound in the computer room.

Said hello to Ranny. He turned to look at Rosie. asked, "Luo Gong." I want you to arrange for a lab that can tape out, how are things going?"

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

"Okay, is there any time? Shall we go over now?" Hu Wenhai is a hands-off shopkeeper at work, and although Rosie is not engaged in outreach, he can only make it difficult.

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

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

Hu Wenhai walked out on his feet. Let Wang Ye, who was waiting in the corridor, 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 single room, which made many people in the 601 Institute put down their work at hand, secretly leaned on the window, and watched curiously as Hu Wenhai commanded the people to move 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 drawing. 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 this kind of genius?"

can work in a national key institution like 601, which is not a true scholar. The literati were contemptuous, and some people immediately scoffed.

"What are you thinking, I think it's just a blind rush! Look, we must clean up the mess in the end. 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 must be a way to reduce the volume and heat dissipation of thyristors, people have long used it abroad, which round is on us." ”

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

"I think it's the same, Hu Wenhai is young after all, and it's good to be educated and educated if he suffers a little setback. ”

Several engineers from the 601 Institute stood behind the window and whispered. 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 and stretched out his hand with a smile. 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 to 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 said with a hearty smile.

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

Chapter 250 IGCT

"Director Gu also saw it, I came for Comrade Hu Wenhai. You treat me as if I don't exist, and 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. This situation shows that the above is still hesitant to contact Hu Wenhai.

Yet soon. An order brought him back from the imperial capital to Bohai Province.

And the work of this business trip. It 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, which obviously made him smell a hint of unusualness.

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.

Reminiscences. Hu Wenhai jumped back into the van, followed by Secretary Lu's Pusang, pulled Director Gu and his party, and drove in the direction of the "501 Institute" marked by 601.

Along the way, 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 some people's thoughts, Hu Wenhai either couldn't make something, 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.

These two paths. None of them can be done in a week. In fact, there are even people who have opened a handicap. Bet that it would be a few months before he dared to return to 601 to show up.

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

As for the rumors of "genius" and "miracle", they are regarded as rumors such as water turning into oil and perpetual motion machines. The so-called support of the state and the attention of the higher leaders were also fooled by him as some kind of confused "old revolutionary" -- 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, her eyes lit up, and she immediately laughed.

"Luo Gong has worked hard, has the progress been going well recently?" Hu Wenhai took a deep breath, as if the energy in his body had returned.

To be honest, he has some opinions about Rosie as a person.

This person is a bit intellectual, unwilling to talk about money, and looks down on people who have no knowledge. Although he does a good job, he is very lacking in the ability to organize and lead the team, and he is also a bit machismo, looking down on or subconsciously thinking that women should do some work that women "should" do.

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 bus and data exchange, and remote data transmission can be carried out through digital signals, 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.

He looked at the large cardboard box held by the two staff members behind Hu Wenhai, and asked with 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, then looked at the watch, and said to Rossi: "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. But Rosie ran out of the lab as fast as she could. Go to the engineer of the 601 Institute in charge of the structure.

……

"What a joke. Reducing the volume and heat dissipation of thyristors? This is impossible, and 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! Do you understand science? What age is it that you still put satellites? 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, too. When Liang Hongwei saw Director Gu, he put away the impatience on his face and had a lot of rules. However, the complaints on the lips are still not less: "You are a master of aircraft design, and you don't follow the laws of science to act recklessly, and you don't express your opinion?"

"Let's see. Director Gu waved his hand and 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. For the need to stay in the air for a long time. Needle-eye drones need to carry a lot of fuel. Considering the dynamic weight variation of the fuel, it is generally necessary to put the fuel tank on the center of gravity. So. The second half of an airplane is made up of fuel tanks, generators, batteries, and engines.

The first half of the aircraft is dominated by sensors, processors, networks, and electronic power equipment. In order not to affect the center of gravity of the aircraft, the addition or reduction of each piece of equipment in each subsystem must be calculated in detail by structural engineers, especially for UAVs, which are small in size and difficult to leave redundant technical indicators.

"Okay, let's take a look. ”

Hu Wenhai opened the cardboard box and took out a circuit board the size of an album from it. Above is a metal disc inlaid on the PCB board, around this disc, all kinds of patches and components are like an army in order, full of harmonious beauty.

"This is an integrated gate commutation thyristor?"

Not only Rosie, but everyone present stretched their necks and looked at the thing in Hu Wenhai's hand with curiosity.

"What's the use of it?"

Director Gu looked at it curiously, pointed to the metal disc in the middle and said, "This is the thyristor, it looks no different from the original." ”

"Yes, it doesn't make a 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 technology improvement of thyristor.

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

On IGCT, of course, you can also see the appearance of thyristors. 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 the drop in the drive voltage, the gate commutation speed is greatly improved.

Although the principle of IGCT is the same as that of thyristors and GTOs, it leads to a reduction in energy consumption, and the supporting functions of the thyristor are integrated into the chip, and finally a large number of rectifier and heat dissipation equipment that occupies a lot of land becomes a circuit board the size of a photo album, and there is 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, today's domestic, no, and even international, even GTO has only one German company that has just been studied.

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

As long as you see Hu Wenhai finish speaking, almost everyone around him will show a disapproving expression.

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 level of integration is almost the highest degree 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!

Table ......

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