Otaku Engineer in Great Tang Dynasty Chapter 279: The rare big baby in the world!
The day when the fleet goes south is getting closer.
Anyone with a little bit of foresight can realize how lucrative this trip to the south is, and there is also an **** by the imperial army. There is no need to worry about safety. It is a godsend opportunity. Therefore, labor shortages are rare in major shipping companies. You can see some notices about recruiting sailors everywhere in Chang'an City. As long as you are well watered and not seasick, hurry up and sign up! The shipowner will first give you a generous resettlement allowance. When you come back from Southern Trade, the wages you will pay will be enough for your family for twenty years!
The workshop is full of enthusiasm. Because some of the precision parts of the compass were polished by a few masters before, the efficiency was very low. Seeing that more and more people are asking for compasses outside, after Fu Bo asked Li Zexuan for instructions, he decided to organize young craftsmen to learn from the masters. Technology, who can learn, will be rewarded with five pennies on the spot.
Under the great reward, there must be a brave man. A large number of smart and dexterous people emerged immediately among the young craftsmen, and the precision parts they polished are not inferior to those masters.
In this way, with a steady stream of new forces joining in, coupled with the advanced assembly line production model, the output of the compass has continued to skyrocket day by day.
On the first day, Qiquge supplied fifty compasses, and it was sold out in less than a quarter of an hour.
The next day, Qiquge supplied 300 compasses, and within half an hour, they still looted them all.
On the third day, Qiquge supplied 500 compasses, but it was finally not robbed. The market for compasses has been saturated. After all, there are more than 1,000 merchant ships going south, and not every merchant ship owner They are all tyrants like Wang Renbiao, who want to equip each ship with a compass.
Sun Huaiyuan saw this and hurriedly gave feedback to the workshop. Fubo got the news and immediately transferred more than half of the people from the production echelon of Compass to produce carriages. According to Li Zexuan's previous plan, it was time to The carriage is pushed out for sale.
…………………
Three days are fleeting.
People outside are preparing for the vigorous southward movement. Deep in the workshop, Zuifengxuan and Li Zexuan are also busy.
There is already a sign that this guy is going to get into trouble. In these three days, he stayed in the "laboratory" (cough, sleeping there too) for more than 90% of the time. With the hard work of the sky, Li Zexuan really made a treasure, and it is still a rare treasure in the world, but his current image is a bit stunned.
"Haha, two telegraph machines have finally been completed!"
Compared to the previous image of the handsome boy in Yushu Linfeng, Li Zexuan's hair is now a bit messy and his eye sockets are sunken. This is a clear sign of staying up late. At this moment, he looked at the pile of devices on the table, laughing like a mad, crazy look.
Yes, the communication tool Li Zexuan wants to do is a telegraph, and it is also a wireless telegraph. The principle of the radio is very simple, the core part is the lc oscillation circuit, the oscillation circuit of the frequency selection network is composed of an inductor l and a capacitor c, which is used to generate a high-frequency sine wave signal.
The radiation power of the lc oscillation circuit is proportional to the fourth power of the oscillation frequency. To make the lc oscillation circuit radiate strong enough electromagnetic waves, the oscillation frequency must be increased and the circuit has an open form.
Although the principle is very simple, but in this era, there are no electronic components that Li Zexuan can use. It is really very difficult to make. There are many technical difficulties, such as the signal modulation of the transceiver and the buzzer. Fortunately, these difficulties were overcome by Li Zexuan, who had been in seclusion for three days. After all the hardships, he finally stumbled and made two wireless telegraphs.
Unfortunately, there is one difficulty he can't overcome at present, and that is the problem of power amplification, which is also the biggest technical difficulty that the electronics industry must break through in this era-triode.
The transistor is one of the basic semiconductor components. It has the function of current amplification and is the core component of electronic circuits. Without a transistor, there would be no integrated circuits, and there would be no electronic products in modern society.
In fact, the lc oscillation circuit needs an amplifying element, that is, a triode. Of course, you can also use a digital lc such as an integrated operational amplifier. Using this amplifying element, through various signal feedback methods to make this constantly consumed oscillating signal Amplified by feedback, and finally output a signal with a relatively stable amplitude and frequency, so that the radio signal can be transmitted farther.
Li Zexuan understands these principles, but what's the point of understanding? Now he can’t make a triode, so he has to bite the bullet and try to make a wireless telegraph first, because he has a trace of luck in his heart, that is, in the ancient times, when there was no electricity, the spatial spectrum was very clean and there was almost no interference. With only a few watts of RF power, it can travel all over the world.
The earliest wireless telegraphs did not use triodes~ IndoMTL.com~ The transmission distance was 250 meters at that time, but there was already electricity in that era, and the space spectrum was not clean, and there would be electromagnetic interference.
During the War of Liberation, *In Yan'an, Lin (Biao) was in Harbin, and they were together for more than two thousand kilometers. There was no relay station in the middle. They all communicated directly with the radio. At that time, the radiated power of the telegraph was only a few watts. So far, it would definitely not work if it were left in modern society.
"Master, don't move, Xiao Xi is combing your hair!"
Li Zexuan laughed madly there, but Xiao Xi at the back was unhappy. These days, Li Zexuan shut himself in the "laboratory" and couldn't help scratching his head whenever he encountered a problem. Ancient men are not like modern short hair Like boys, they all have long hair, so his hair has been messy recently. In order to maintain a good image for his young master, Xiao Xi spends a long time combing Li Zexuan's hair every day.
"Haha, no need to comb, no need to comb! Come on, Xiao Xi, try my latest invention, Master!"
Li Zexuan noticed that there was someone behind him. He turned around, pinching Xiao Xi's shoulder and exclaimed excitedly.
These days, he is often tranced in doing things, and he has been in a state of forgetting things and me many times. If Xiao Xi was not here to take care of him, it is estimated that he was either starved to death or sloppy to death by himself. In the end, although he could also turn on the radio The newspaper was made, but the final situation would definitely be countless times worse than it is now.
"Master~! Wait a minute, let me comb your hair first."
Xiao Xi is not surprised. In addition to taking care of Li Zexuan's daily life, she has also helped Li Zexuan do various experiments. She failed many times in the middle. Now she is not as interested in doing experiments as before.
"Okay! That's all right, Xiao Xi, hurry up!"
Li Zexuan had no choice but to compromise.
(End of this chapter)