The day for the fleet to head south is getting closer.
Anyone with a little foresight can realize how huge profits there are in this trip south, and it is also escorted by the imperial army, so there is no need to worry about safety issues. It is simply a god-given opportunity. Therefore, major shipping companies are also experiencing rare labor shortages. There are notices recruiting sailors everywhere in Chang'an City. As long as you are good at water and don't get seasick, hurry up and sign up! Not only will the shipowner give you a generous settlement fee first, but when you return from trading in the south, the wages given to you will be enough to support your family for twenty years!
The workshop was a lively scene. Since some precision parts of the compass were previously polished by a few master craftsmen, the efficiency was very low. Seeing more and more people looking to buy compasses, Uncle Fu consulted Li Zexuan and decided to organize young craftsmen to learn from the master craftsmen. Whoever can learn the technique will be rewarded five dollars at a time on the spot.
A large reward must be rewarded by brave men, and a large number of smart and skillful people immediately emerged among the young craftsmen. The precision parts they polished were no worse than those of the old masters.
In this way, with the continuous addition of new forces and the advanced assembly line production model, the output of compasses continues to skyrocket day by day.
On the first day, Qiquge supplied fifty compasses, and they were sold out in less than a quarter of an hour.
The next day, Qiquge supplied 300 compasses, and they were all sold out in less than half an hour.
On the third day, Qiquge supplied 500 compasses, and finally they were not sold out. The market for compasses has begun to become saturated. After all, there are only more than a thousand merchant ships going south, and not every merchant ship owner is like Wang Ren. As rich as a watch, every boat must be equipped with a compass.
Sun Huaiyuan saw the situation and hurriedly reported it to the workshop. After Fu Bo received the news, he immediately transferred more than half of the people from the compass production team to produce carriages. According to Li Zexuan's previous plan, it was time to launch the carriages. Sold.
… … … …
Three days passed in a blink of an eye.
People outside were preparing for the vigorous move south. Deep in the workshop, Zui Fengxuan and Li Zexuan were also very busy.
This guy is already showing signs of going crazy. In the past three days, more than 90% of the time, he has stayed in the "laboratory" (cough, he also slept there), and has gone through a lot of hardships these days. After fighting hard, Li Zexuan really made a treasure, and it was a rare treasure in the world, but his current image is a bit awkward.
"Haha, I finally made two telegraph machines!"
Compared with Yushu Linfeng's previous image of a dashing young man, Li Zexuan's hair is now a little disheveled and his eye sockets are sunken, which is an obvious sign of staying up too late. At this moment, he looked at the pile of equipment on the table and laughed like a crazy man.
That's right, the communication tool Li Zexuan wanted to use was a telegraph machine, and it was also a wireless telegraph machine. The principle of radio is very simple. The core part is the LC oscillation circuit, which uses inductor L and capacitor C to form an oscillation circuit of a frequency selective network, which is used to generate high-frequency sine wave signals.
The radiation power of the LC oscillation circuit is proportional to the fourth power of the oscillation frequency. In order for the LC oscillation circuit to radiate strong enough electromagnetic waves, the oscillation frequency must be increased and the circuit must be in an open form.
Although the principle is very simple, in this era, there are no electronic components that Li Zexuan can use, and it is very difficult to actually make it. There are many technical difficulties, such as the signal modulation of the ticker, the production of the buzzer, etc. , Fortunately, these difficulties were overcome one by one by Li Zexuan, who had been in seclusion for three days. After all the hardships, he finally managed to build two wireless telegraph machines.
But unfortunately, there is one difficulty that he cannot overcome at present, and that is the problem of power amplification. It is also the biggest technical difficulty that the electronic industry of this era must overcome if it wants to make progress - the triode.
The transistor is one of the basic components of semiconductors. It has the function of current amplification and is the core component of electronic circuits. Without the transistor, there would be no integrated circuits, let alone the electronic products in modern society.
In fact, the LC oscillation circuit requires an amplification component, which is a triode. Of course, you can also use digital LCs such as integrated operational amplifiers. Using this amplification component, the continuously consumed oscillation signal is fed back and amplified through various signal feedback methods. , so as to finally output a signal with relatively stable amplitude and frequency, so that the radio signal can be transmitted farther.
Li Zexuan understands these principles, but what's the use of understanding them? He couldn't make a triode now, so he had to bite the bullet and try to make a wireless telegraph machine first, because he had a bit of luck in his heart, that is, in ancient times, when there was no electricity, the space spectrum was very clean and there was almost no interference. With just a few watts of RF power, it can reach the entire world.
The earliest wireless telegraph machines did not use triodes. The transmission distance at that time was 250 meters. However, electricity was already available at that time, and the spatial spectrum was not clean and there would be electromagnetic interference.
During the War of Liberation, *** was in Yan'an and Lin (Biao) was in Harbin. They were more than 2,000 kilometers apart. There were no relay stations in between. They communicated directly with radio stations. At that time, the radiation power of telegraph machines was only a few watts. It has spread so far, and it would definitely not work in modern society.
"Master, don't move, Xiao Xi is combing your hair!"
Li Zexuan laughed crazily there, but Xiao Xi behind him was not happy. These days, Li Zexuan locked himself in the "laboratory". Whenever he encountered a problem, he couldn't help but scratch his head. Men in ancient times were not like modern boys with short hair. 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!"
Only then did Li Zexuan notice that there was someone behind him. He turned around, squeezed Xiao Xi's shoulders and shouted excitedly.
These days, he is often lost in thought when doing things, and many times he has entered a state of forgetfulness. If Xiao Xi hadn't been here to take care of him, he would have either starved to death or been sloppy by himself. In the end, although he was able to make a wireless telegraph machine Come out, but the final situation will definitely be countless times worse than now.
"Master~! Please wait a moment and let me comb your hair first."
Xiao Xi was not surprised. In addition to taking care of Li Zexuan's diet and daily life these days, she also helped Li Zexuan do various experiments. She failed many times in the process, and she is no longer as interested in doing experiments as before.
"Okay! That's okay, Xiaoxi, hurry up!"
Li Zexuan could only compromise.
(End of chapter)