"Lightning must pass by me!!! Uncle Emperor, how can I not learn anymore..." Bush's face immediately became bitter after hearing Hong Tao's explanation, and he almost knelt on the ground and begged for mercy. Gods can treat electricity as a toy, but there is no ordinary person, so they will be burned to ashes.

"Who said that electricity will pass through your hands? I am telling you the principles of new technology. You can do it even if you leave me in the future. Unlucky child, hold his fists and tell me what I just said. If you dare to miss a word, I will give you a power torture!" Hong Tao waved his hand, but he didn't really make it. It seemed a bit difficult for a thirteenth-century young man who didn't even know what electricity was to learn the law of right-hand. But no matter how difficult it is, he has to learn it. If he doesn't teach others, how can he be lazy?

"... The little finger is the direction of electricity coming, and the big thumb is the direction of electricity going..." Bush was afraid of being electrocuted, but he was even more afraid of the emperor's uncle, and he repeated the law of his right hand tremblingly.

"Look, you learn very quickly. You said you are not stupid, your brain is quite good, why are you doing anything that doesn't work? Then go around, remember how many times he had just spared?" Bush's performance surprised Hong Tao a little. Although he didn't understand what electric current is and what magnetic lines are, the retelling was very complete and there was almost no omission. Hong Tao, who was originally holding a dead horse as a living horse, seemed to see a little hope again. He felt that his apprentice was not too bad.

"Four hundred laps... Master, why are you going?" Bush's mind was really good. He could remember everything he said, but he was a little more timid. Seeing Hong Tao standing up and going out, he was a little vague, for fear that Hong Tao would leave, lightning suddenly came.

"I'll find some other materials. Just in the yard, you can wrap four of the same coils. Hey, I said, how old are you, why are you still listening to the wall?" Hong Tao said while stepping on his legs and planning to go out. Unexpectedly, when he pushed the door, something hit outside the door. After a closer look, it was Wen Xiaoqi and Wen Si. They were eavesdropping outside the door.

"Hehe, we want to see what good things Your Majesty is making, and can we teach us too." Compared with Bush, Wen Xiaoqi and Wen Si were simply shameless. They were caught by Hong Tao and had no fear on their faces, and they were smiling and wanted to enter the house.

"Go and go... go what you should do. This is the forbidden area. If you dare to take a step in, I will call the guards! Have your steam engine been ready? How long has it been, and you have not even had a broken machine ready, and you are so embarrassed to learn something else. You two are idle too, so you polish these magnets to the size of gold coins for me. Hurry up, I'm waiting to use it." Hong Tao didn't say much nonsense. Those who can enter this big yard are all top technical talents in the empire, so don't worry too much about leaking secrets. At least not at the moment.

It is better to say less about building a generator, because you can't tell whether you can succeed or not. Electricity is much more complicated than other things. If you can't explain it clearly in one sentence or two, just don't say it. This will make you appear more mysterious and unfathomable.

What Hong Tao wants to do is a small hand-crank generator, to be precise, a disc generator. It is different from ordinary generators. The rotor and the stator are not trapped together, but two discs are fastened together, and are separated by two millimeters of gaps in the middle with bearings. The disc as the stator does not rotate, and the disc as the rotor will rotate with the bearing as the center.

The disc of the stator is a circular steel plate. Five wound coils are glued with natural resin on it. The two enameled wire heads protruded from each coil are all linked together in the order of the head joint and the tail joint. This is the wire of the output terminal of the current.

The rotor disc is made of wooden and four circular grooves are dug on it. Each groove is inlaid with a polished natural magnet, which is also fixed with natural gum. There is a steel shaft between the stator and the rotor. The stator is fixed to the steel shaft. The rotor is connected to the steel shaft through a hand-made needle roller bearing.

Can electricity be generated in this way? Almost all, Hong Tao asked someone to make a wooden box, fixing the two ends of the rotor and the steel shaft of the stator in the box. He used two belts to drive the rotor, and the other end was a larger wheel, driven by a shaker, and the owner of the shaker was Bush.

In fact, what Hong Tao made was a simple hand-crank generator, which emitted AC electricity, with a voltage of only about 30 volts and a power of no more than a few dozen watts. Is this thing useless? At best, you can use the output wire to make Bush feel the slight stimulation and can't do anything. It's completely Emperor Hong's big toy.

"This is electricity, it's the same as lightning. It's just that the amount of lightning I draw is very small, so you will feel numb. If I build a large one and use a water truck by the river to carry them, these two threads are poked at you, and in the blink of an eye, your life will be over."

After several days of work, he created a test piece with no practical value. Hong Tao felt that it would damage his semi-immortal image, and was even more afraid that Bush felt that it was meaningless and didn't want to learn it anymore. In the future, he would not find a good apprentice with such strong understanding ability and can learn from others. He quickly supplemented it with his mouth. In an instant, Bush shook more vigorously, and he didn't even bother to wipe it. While shaking, he poked his calves with a thread, grinning and enjoying the taste of electrotherapy.

Bush is easy to fool, and he does not underestimate the new technology that Hong Tao taught him. Not only is he not annoyed, but he also has a great interest in electricity. It seems that this child is born a research talent. His abnormal behavior before can only show that he is not suitable for ordinary jobs. If he really has what he likes, his patience and seriousness are far beyond ordinary people.

Hong Tao was not very satisfied with Bush's performance, but his work. The power of this hand-crank generator is too small and can't do anything, and he can't even play with electric shock. It's too weak and too in line with his tall image. What should I do? Can it also increase the power of the generator?

After thinking for a long time, Hong Tao came to a conclusion that if you want to use electricity for production and life, you must have strong permanent magnets, otherwise the power will not be increased at all. Strong permanent magnets will definitely not be produced, so is there any other way to replace them?

Yes! Excitation coils can make the copper wire coil have strong and stable magnetism. The specific method is to use DC power to the coil, and the coil becomes an electromagnetic magnet with strong magneticity. The specific magnetic strength depends on the number of turns of the coil being wound. The alternating current is not good, and its electrodes are fluctuating between the positive and negative poles, and the magnetic field will fluctuate accordingly and are unstable.

To use excitation coils to make a strong permanent magnet, only a small amount of DC power is required to replace the strong permanent magnet in the generator. With strong permanent magnets, the power of the generator can be increased and stable. But the problem arises again. DC generators also need strong permanent magnets to generate stable currents. After turning around, they turn back to their original position.

"Bush, stop shaking first. The master teaches you to make a bigger generator! You go find a charity first and ask him to take you to the mine. Ship the copper alum for me and keep the shipping fee in my account. He***, the emperor needs money to buy something, is there any reason?" After thinking about it until dinner time, Hong Tao finally came up with a solution, which was also the only feasible method he thought was to make lead-acid batteries to produce DC power.

First use natural magnets as a magnetic pole DC generator, then use parallel or series according to different needs to obtain sufficient voltage and current to charge the lead-acid battery, and finally use the battery pack to energize the excitation coil, and then generate power by a larger generator. This method is a bit like a slut in the kiln, and it has tossed a lot of money. But it can indeed start with a very small DC power and then obtain more power generation. The disadvantage is that it is too troublesome.

Many research inventions are actually like Hong Tao. They are not necessarily clear at first, but forced out when studying something. However, Hong Tao is a little exception. He is not forced out when studying something, but bragging about it with his wife. Anyway, he is also an idle person now, and the Royal Fleet is still rebuilt. The ancients said that idle life is like idle things.

What is copper alum? Its scientific name is copper pentahydrate, which is a blue crystal. It is very common in copper ores, which is the associated ore after sulfide is oxidized. If you want to get a lead-acid battery, you must first have a battery liquid, that is, sulfuric acid. This thing can be obtained by calcining green alum, blue alum and pyrite and then condensing the gas produced by calcining green alum, blue alum and pyrite. Jinhewan does not have green alum and pyrite, but there are many blue alums in the copper ore. That thing used to be useless, but it was just used as a small dose of Chinese medicine. Now they are useful.

Is there any technology for calcined blue alum recondensation? It must be, or even higher. After nearly ten years of production research on crude oil, Imperial Chemical Group has been able to extract several useful substances from it, no longer the original simple mixed oil and heavy oil, as well as paraffin and asphalt. After the mixed oil is condensed at multiple layers of different temperatures, its purity is gradually increasing, and it is approaching real gasoline and diesel.

The heating kettle and condensation tower that decompose crude oil are very similar to the principle of calcining blue alum to obtain acid steam. He only needs to replace the heating kettle with a calcination kiln. So Emperor Hong spent another money and asked the craftsmen of the Chemical Group to build a small calcination kiln and a small hydraulic condensation tower in an isolation belt at the bottom of the Milky Way. Then he started his chemical journey with a group of slaves. He was still the same. He stared at the south bank, and the slaves went to work on the north bank.

The reason why we chose such a remote place is mainly because the high temperature and toxic gases will be produced when concentrated sulfuric acid is concentrated, and some accidents may occur. It is far away from Jinhe City and close to the estuary of the Milky Way. Once there is any problem, just run away. If you like to explode or not, you will be toxic or not. Once the fire is burned, everything will be gone, and at most some slaves and forests will be lost. These two things are not money at all in the 13th century, and no one will ask for them for free.
Chapter completed!