Chapter 460: Not the best, but better than yours

Gao Zhendong burst into laughter when he heard this, and the neighbors around him also laughed. He deserved to be beaten!

Gao Zhendong laughed so hard that tears came out of his eyes. He remembered a childhood friend from his previous life.

That boy had the same problem as Bang Geng. When washing dishes, in order to use up the detergent as soon as possible so that he could have a water fight with his friends using the detergent bottle, he used up a 3ml bottle of detergent in 500 days.

On the day he was discovered by his mother, Gao Zhendong heard a commotion on the second floor, and Gao Zhendong listened to a dinner scene on the first floor.

After thinking about it, Gao Zhendong took out two pieces of candy, squatted down, and handed the candy to Banggeng, but Banggeng didn't dare to take it.

Qin Huairu asked: "Boss Gao, what are you doing?"

Gao Zhendong smiled and said, "These two candies are a reward for you. You have taken good care of your two sisters. Take them."

Bang Geng couldn't resist the temptation and took it. Then Gao Zhendong said "but". Adults all know that if you want to be obedient, you have to listen to what comes after this sentence.

"But your method is wrong. First, you steal the toothpaste from home. Second, you waste it by squeezing it out and throwing it away."

Bang Geng was a little confused: "Uncle Gao, is it stealing if I take my own toothpaste?"

Gao Zhendong nodded: "As long as it's not yours, it's stealing. Taking it without permission is also called stealing."

"Uncle Gao, what is taking without asking?"

Fuck, what the hell is the point of me and a little brat showing off!
"If you take something without telling the owner, that's called stealing."

"Oh, I see."

"So do you think you were wrong?"

"wrong."

Gao Zhendong nodded happily, yes, it’s done.

He stood up and pushed the stick towards Qin Huairu.

"Sister Jia, you still have to beat him, just continue!"

Everyone was dumbfounded. Chief Engineer Gao, you are not playing by the rules.

Only Lou Xiao'e burst into laughter, thinking that Zhendong was too naughty.

Unexpectedly, Gao Zhendong cheerfully gave a caring instruction: "By the way, just spank the buttocks. The flesh is thick, so it's not easy to cause problems, and it hurts! It will make you remember."

Qin Huairu was dumbfounded, but Bang Geng was fooled by Gao Zhendong: "Mom, I know I was wrong, you can hit me. But don't hit me on the head, or I will be stupid and won't be able to take care of you when I grow up."

Qin Huairu waved the feather duster weakly a few times, but finally couldn't hit him anymore. She threw the feather duster away, hugged the stick and burst into tears.

Although she was crying, everyone knew that she was actually happy because of Banggeng's words. Of course, she was also sad because of losing her loved ones.

Yi Zhonghai smiled and chased them away: "Alright, alright, there's nothing to see anymore. We've already fought. Haha, let's all go."

Everyone watched the show happily, felt satisfied, and started to leave one after another. These days, this is the main entertainment activity.

Especially like today, the incident was not a big deal, but the commotion was big, the plot was full of ups and downs, and there were no bad effects. It was really enjoyable!
"It has to be Chief Engineer Gao. It's so interesting."

"Of course. He is the most senior official in the courtyard. It is not difficult for him to handle these matters."

"Isn't that Liu Haizhong in the backyard also an official?"

"What the hell, he's not even as good as a seventh-level blacksmith."

"..."

Everyone was walking and expressing their thoughts. Just as Gao Zhendong was about to turn around and go home, Qin Huairu called him, "Chief Engineer Gao, thank you!"

After saying that, he bowed to Gao Zhendong, who waved his hand cheerfully: "You're welcome, you're welcome."

At the gate of Jia's house, Banggeng gave one candy to Xiaodang and put the other one in front of Jia Zhenzhen. The little guy licked it happily with his little tongue.
-

The first thing Gao Zhendong did when he got to work was to call Liu Rongguo over.

Comrade, the bismuth telluride matrix is ​​now up to you.

Looking at the document in his hand, Liu Rongguo did not complain. It didn't look difficult.

After Liu Rongguo left, Gao Zhendong spent a long time searching through the inventory of mercury cadmium telluride crystals sent by 1761 and got five of the largest ones.

He deliberately kept these big ones. The simplest way to ensure consistency is to use the same materials, so he kept the largest ones.

In order to practice with 1274, Gao Zhendong also matched a batch of not-so-good ones, so that he could practice the craft first, and then provide good products when they were mature.

Gao Zhendong found the comrades in the confidential room of the third factory and asked them to send the batch of crystals to the Institute of Research and Development. Finally, the batch of crystals came to the integrated circuit process test workshop of the 1274 factory.

The factory was not surprised at all that the Institute of Advanced Research had another batch of special components to be processed. This was a good thing, indicating that the Institute of Advanced Research had many new ideas that they wanted to realize.

But Gao Zhendong hid behind.

The specification requirements of this batch of components are much smaller than the components they make in their daily life, but this does not pose a problem for the comrades. The supporting processes that Gao Zhendong has come up with to cooperate with the integrated circuits, including packaging processes, can just match the specifications of these tubes.

The only requirement was that the diodes should be arranged in a single row as straight as possible in groups and packaged into a long device. In addition, the insulation and thermal conductivity of the device packaging material should be as good as possible, which made it a little difficult for them.

It’s not that it can’t be done, but the three words “as much as possible” are difficult to achieve and you’ll never reach the end.

Especially in terms of thermal conductivity, among the conventional packaging materials they have, those with good insulation generally have poor thermal conductivity.

However, this is not the main contradiction. To put it more directly, it is not impossible to seal it with a thin layer of material with good insulation and then wrap it with a layer of material with good thermal conductivity.

When discussing performance, size always matters.

It's like talking about toxicity without considering the dosage is just being a hooligan.

If the entire device is made into a piece, it is a bit like a long straight-blade knife. The diodes are all on the blade, and the entire blade is mainly composed of leads and thermal conductive materials.

For the sake of convenience and confidentiality, the people at Factory 1274 named this project "Pian'er Dao".

Gao Zhendong didn't know that his linear array infrared sensor was at 1274 and had somehow become a cold weapon. He was receiving comrades from the Telephone Institute of the Communications Institute.

The comrades encountered a small problem - there were a few small points about the relay that they couldn't figure out.

They originally thought that imitation and self-production would be relatively simple, after all, there was a sample basis. However, when the performance and volume and weight requirements were added together, they suddenly found that things became not so simple.

These small dots are the contacts. Now the comrades at the telephone office are reporting the situation to Gao Zhendong.

"The main problem is the low lifespan. We have done preliminary research. Putting aside the requirement of residual spring, we only talk about the relay mechanism. If the number of switching times can be compensated by strengthening the relay action mechanism, the lifespan of the contacts will really become a problem. In short, if the overall lifespan is to meet the standard, the entire relay will be a bit like the old Russian flat relay."

The signal processing technology at that time was not good enough, so in order to ensure the signal-to-noise ratio, the most commonly used solution was to use great force to achieve miracles, such as increasing the power or increasing the voltage.

The commonly used value of human body safety voltage is 36 volts. In fact, it is more accurate to say safe current rather than safe voltage. It’s just that when the same voltage is applied to different people, the current is unpredictable and depends on many conditions, so 36 volts is used to approximate it. In fact, in extreme cases, 36 volts is also unsafe.

The voltage used in telephones includes 60 volts, -48 volts, etc., which all exceed the safe voltage for the human body. The generator in the hand-cranked telephone could play tricks on people and catch fish because of the high voltage.

Let me make it clear that it is not popular to use that thing or similar techniques to catch fish nowadays. It is a real catch.

When the voltage is high, arc erosion will be more serious when the contacts are on and off. In addition, the dynamic and static welding of the contacts will also have a great impact on the life of the relay.

Those that can withstand the test have poor conductivity, while those that have good conductivity cannot withstand the test. Circuits similar to soft start will bring other problems, such as complex structure, and they cannot solve the problem of welding failure.

In addition, the quality of domestic materials at this time is simply beyond words.

Comrades from the Telephone Research Institute have considered this issue quite carefully. This is indeed a problem.

Gao Zhendong pondered and said, "If we solve the contact material problem, are you sure you can make a qualified relay?"

General Feng from the Institute of Communications and the comrades from the Telephone Research Institute were unable to understand what was going on for a while. General Gao is such a talented person, but he also knows this?

Thinking about where I am now, I remembered that metallurgy and materials seem to be Mr. Gao’s main business?
Think about the place where I came to attend the meeting, the Third Steel Rolling Mill of the Seventeenth Ministry of Machine Building!

Leader of the 12th Ministry of Machine Building: We have no idea what medicine the comrade in charge of college student allocation took last year went wrong.

Looking at the topic that Chief Engineer Gao was discussing with them, and then looking at his work unit, all the comrades in the Institute of Communications inevitably fell into confusion and absurdity for a moment.

Mr. Feng had recovered quickly after all the hardships. He looked up at the comrade from the telephone research institute and urged him, "Why aren't you talking? Mr. Gao is asking you, do you want to solve the problem?"

"Ah, yes, yes, yes. Mr. Gao, if we can solve the contact problem, we are still confident that we can make qualified relays. It doesn't have to be a residual spring relay, but an ordinary one will be fine."

You have to know that electronic switches are not very reliable in this era. If the problem with relay contacts can be solved, it would be great. Use relays first and then consider electronic switches slowly.

Mr. Feng then nodded with satisfaction. This is more like it. Look at how you looked like you had never seen the world before.

Gao Zhendong smiled and said, "What a coincidence, maybe I can help you."

After saying that, he walked to his desk and made a phone call.

"Bring one sample each from the sample library labeled 6007 and 6013. Yes, yes. Send them to my office."

These two materials, whose abbreviations have now been hidden by him, are not the best for relay contacts, but they are undoubtedly much better than what the Communications Institute has access to now.

Well, the best one is not cheap and not very universal. There is no need to get it and it is a waste of time.

(End of this chapter)