Chapter 36 Silly Zhu’s Longing
Gao Zhendong’s idea is to use a voltmeter display. The output of the thermocouple is at the millivolt level and must be amplified more than 100 times before it can drive the voltmeter. A tube amplification circuit is required. At the same time, N-type and K-types also need a compensation circuit for cold-end temperature compensation, plus a power supply circuit. , this whole circuit is not complicated.
Since the output voltage of the thermocouple is non-linear with the temperature, it is difficult to directly indicate the temperature on the scale of the meter. At this time, there were no microcontrollers and other components, so it was impossible to directly measure the voltage after collecting it. Calculate the temperature.
So Gao Zhendong planned to directly display the amplified voltage value, and at the same time used a simple and crude method to solve the problem of rapid voltage-temperature conversion at the production site: the look-up table method.
To put it simply, the corresponding relationship between the displayed voltage and temperature is directly made into a table. When the on-site personnel look at the voltage value, they can know the temperature by glancing at the table.
Taking out the drawing tools, Gao Zhendong began to draw the circuit schematic diagram. Although there is no computer and circuit diagram design software such as AltiumDesigner, Protel, PADS, and Eagle, it is impossible to directly generate a printed circuit board (PCB) diagram from the circuit schematic diagram and BOM table, but Gao Zhendong still did not omit the schematic diagram and draw the PCB diagram directly.
After all, when modifications are needed, it is troublesome to directly modify the PCB without a schematic, not to mention that the schematic is the most important part of the original design.
The circuit is not complicated. Gao Zhendong drew the schematic diagram and started to draw the PCB manually based on the schematic diagram. Core has double-sided copper-clad laminates, which saves Gao Zhendong from having to worry about circuit scaffolding. Although scaffolding has the romance of handwork, it is an out-and-out backward technology, which is not conducive to product size, quality control and large-scale production. Batch, standardized production.
When the circuits become more complicated in the future, building a shed will be useless and can only be used in niche occasions such as HIFI-DIY and electronic enthusiasts.
Circuit diagrams and schematics, plus reviewing the electrode repeatability test design invented by Liang, Gao Zhendong was busy until he got off work in the afternoon.
Before leaving get off work, Gao Zhendong wrote the review opinions on the electrode repeatability test design and handed it to Liang Fafa in the laboratory to revise it before noon the next day.
It’s time to get off work, but quite a few people haven’t left yet. The reason is simple: there is work to be done, and there are also subsidies.
For those who need to work overtime after get off work, half a day's salary will be subsidized each time. However, to get this subsidy, you have to work from 7 to 11 after get off work, and you will not get a minute less.
A second-level fitter like Jia Dongxu earns a salary of thirty-eight and six yuan, which is almost eighty cents that night.
If the entire scientific research project is completed, it will be a lot of money in total, so Gao Zhendong did not dare to ask for more at the beginning. This is one of the reasons.
Gao Zhendong didn't force it. Some people are willing to work overtime. It's not a bad thing to finish the work early. The important thing is to get something for your work, not not to work overtime.
On the way home, Gao Zhendong felt that he had used his brain too much today and needed to have a good meal. So I weighed half a kilogram of meat and half a pig's belly. When I got home, I put the things in the storage room and turned them into a kilogram of meat and a pair of pig's belly. I've had a hard day today. I'll ask Shazhu to fix it. .
No way, Gao Zhendong’s own cooking skills are only good enough to eat, and there is a cook in the yard, so he doesn’t use it in vain.
As soon as he arrived at the door of Shazhu with his things, He Yuyu jumped out of his room: "Brother Zhendong, brother Zhendong, what's the matter? You came to ask my brother to get food again."
Gao Zhendong took two peanut candies from his pocket and handed them to her: "Nothing good, I'm just jealous of your brother's craftsmanship, haha."
He Yuyu cheered, thanked Gao Zhendong, and ran to his room to enjoy it.
Si Zhu heard the noise and walked out. He had just returned home and was putting a small lunch box in the cupboard. When he saw Gao Zhendong carrying something, he knew that this man had come to him to cook again.
However, he was not disgusted and was quite happy. Firstly, he regarded Gao Zhendong as a friend and he was willing to cook for his friends. Secondly, every time he cooked, the food prepared by Gao Zhendong was quite generous. Whenever it was convenient, I would ask him to eat with Yu Yu, who had been rubbed by Yu Yu many times. Suddenly, Silly Zhu felt that the small lunch box was no longer delicious. What he could eat every time depended on his luck. No one opened the small stove today, so what he brought back was a big pot of food, which was nothing compared to what Gao Zhendong had in his hand. Compare.
So Silly Zhu threw the small lunch box into the cupboard, tied up his apron, and started cooking.
Hearing the sound of Silly Zhu chopping vegetables, Gao Zhendong thought of his radio and gramophone: "Sinzhu, when it's ready, I'll serve it to the deaf old lady in the backyard. You can just serve me the rest." Go there, let's eat and listen to the radio."
Only then did Silly Zhu know that Gao Zhendong's radio was repaired. He had been laughing at Gao Zhendong for buying a wooden box for 45 yuan: "That thing of yours can be considered a waste. Is it done? I'll bring it over later."
He Yuyu became interested: "Brother Zhendong, I want to listen to the radio. Brother, you can cook by yourself. I'll go to Brother Zhendong's place to listen to the radio. Go play."
Si Zhu was not happy when he heard this: "Hey, you should stay and help me. Don't blame me for being late for dinner later."
He Yumei didn't. Hearing this, Gao Zhendong ran away as soon as he came out. Gao Zhendong had no choice but to follow him and open the door for him, leaving Silly Pillar to work alone.
He Yuyu was listening to the radio, and Gao Zhendong started tinkering with ESR materials again. He took the time to go back to school and ask for textbooks on metallurgy from teachers in other majors. He looked at the ESR materials with the textbooks and felt that he had learned a lot.
Not long after, Shazhu came over with hot food.
The evening news is blaring on the radio, and the food is steaming in the warm room. It is already late autumn in October, and the temperature outside has dropped. There is also a faint whistling of the wind, which makes the room even more vivid. Feeling so comfortable here, Shazhu paid a tribute to Gao Zhendong: "You still live a comfortable life. When you listen to the ditty, drink a little wine, and work smoothly, all you need is a wife."
This sentence "You are short of a wife." " Gao Zhendong was silent. He had not yet met his ambiguous partner in his senior year. He wore it, wore it, went to the war, and after the war, he went to school again. As a result, when he was in school, the students in the school were very enthusiastic about building the motherland, and the learning atmosphere was high. It was so thick that it couldn't be dissolved, and the negotiation still didn't work out.
Thinking of this, Gao Zhendong was shocked: "Oh no, I am not the reincarnation of Jin Chanzi."
He was amused by his own thoughts. He chuckled and shook his head: "Don't talk about this. Speaking of this, we are evenly matched. You are 24, right? Yu Yu's sister-in-law is still flying in the sky, right?"
This time it was Silly Zhu’s turn to feel uncomfortable. He was bragging, he would say: “You don’t know, I didn’t like you at that time. The girls who chase me can all line up from here to Dongzhimen.”
Gao Zhendong asked casually: "Just brag. Seriously, what do you want?"
Si Zhu took a sip of wine and fell into admiration: "Pan Liang , Tiao Shun, family-oriented, good tempered, able to have children, has a household registration, and has a job.”
Listen, this means that this person has not been severely beaten by reality, and has not yet become obsessed with Qin Jingru in the future. At that time, he didn’t talk about household registration or job at that time.
Gao Zhendong turned around and thought, isn't this Qin Huairu who took over Jia Dongxu's job? It turns out that the roots have been buried here for a long time. The problem is that even though you can give birth, you haven't made it clear whether it is your own birth.
Gao Zhendong raised his glass and drank one himself: "Yes, you should be alone."
(End of this chapter)