Otaku Engineer in Great Tang Dynasty

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The materials used in voltaic batteries are: silver flakes, zinc flakes, salt and absorbent paper. As long as they are simply stacked together, it is a battery that can generate electricity!

So did these materials exist in ancient times? If the era you want to travel through is the Ming Dynasty, congratulations, you have all these things! You can charge your phone directly. Because metal zinc was first invented by the Chinese in the Ming Dynasty, it was called "Japanese lead" at that time, and it seems that it was first extracted from silver mines imported from Japan.

But unfortunately, Li Zexuan traveled to the Tang Dynasty, so he lacked one material: zinc flakes.

But can't a voltaic battery be made without zinc metal? Of course not, as long as there are two different metals, the difference is the magnitude of the voltage and current generated. The positive electrode material used in modern dry batteries is copper (gold and silver are better, but that is for the flashlights of rich people), and the negative electrode material is zinc.

Copper is also easy to get in ancient times (unless you've spent eight lifetimes of mold and traveled back to the Stone Age), you can use aluminum as the negative material, or iron...yes, it's cheaper than copper!

In the room, ah, no, it should be in the "lab", Li Zexuan secretly rejoiced in his past life because he had read "Myth" and had doubts, and Baidu had a lot of information about battery manufacturing. Otherwise, he really can't think of making a voltaic battery now, and he will definitely be a new born calf who is not afraid of a tiger to build a generator.

Does this special girl have shit luck?

Because in the Tang Dynasty without any industrial and electronic foundation, it would be really difficult to build a generator with the theoretical knowledge learned from textbooks. Li Zexuan is not planning to build a generator at present. There are too many technical problems to solve, let's do it later.

He took a special cuboid pottery pot. There were fifty separate small compartments inside the pottery pot. Because the voltage and current of a voltaic battery was definitely not enough, it was necessary to increase the current in parallel, and then increase the voltage in series.

The voltage of a roughest voltaic battery is about one volt, and the current is generally about ten to twenty milliamps. If the voltage of the voltaic battery in each small compartment is one volt and the current is ten milliamps, then fifty voltaic batteries are connected in parallel and counted as one battery pack, and five such voltaic battery packs are connected in series. Together, you can get a power supply with a voltage of five volts and a current of five hundred milliamps, and then the charging problem of your mobile phone can be solved (ps. If you are going to travel to ancient times with your mobile phone, please remember this simplest way to charge your phone).

Of course, Li Zexuan is a soul wearer. When he crossed over, he didn't bring anything with him. The purpose of his battery was definitely not to charge the mobile phone, but to power the communication tools.

He also often lamented why he was not wearing a computer, so he could bring a mobile phone over here. It would be great to play Fight the Landlord with a single machine when he had nothing to do, or cut fruit.

However, soul wear also has the benefits of soul wear, at least there is no obstacle when communicating with people in the Tang Dynasty, because Tang people's mandarin is not Mandarin at all, with a very strong accent, if it is not soul wear, you can't understand others at all. what are you talking about.

Li Zexuan prepared a small basin of concentrated salt water, and then poured the concentrated salt water into each small compartment one by one. Two adjacent compartments, and then insert the pre-bent copper sheet on the other side.

The copper piece is the positive pole of each voltaic battery, and the iron piece is the negative pole. In this way, the iron piece and the copper piece are inserted into the compartment, which is equivalent to connecting all the positive poles and the negative poles together. As a whole, Fifty small batteries are connected in parallel to form a battery pack with a voltage of about one volt and a current of about 500 mA.

After completing the first battery pack, Li Zexuan took the copper wire, which was painted on the surface. He used the copper wire to lead out the positive and negative electrodes of the battery pack, and then he took the rectangular pot with Cover it with the matching cover, such a simple battery is made, and it is very convenient to use, just connect the positive and negative poles to the circuit directly. If you think the voltage is not enough, make a few more such batteries and connect them in series.

"Master, it's time to eat!"

At this moment, Xiao Xi knocked on the door and shouted.

Taking advantage of the time when Li Zexuan was doing the experiment, the little girl asked Sanbao to take her back to Li's house to get dinner. In order to make Li Zexuan feel comfortable, Xiaoxi also tried her best.

"Well, okay, I'll be out right now!"

Hearing this, Li Zexuan was also full of happiness. Compared with his previous life, he is now doing the same job, but his situation is completely different.

In his previous life, he spent three years as a graduate student in the laboratory. He entered the laboratory at 8:30 every morning to check in, and usually left the laboratory at around 10 in the evening. Of course, he had to check in again. The project team was responsible for People have to check attendance every month.

Sometimes, in order to catch up with the progress of the project, it is not uncommon to work overtime in the laboratory until one or two o'clock or even overnight. To put it mildly, he is a scientific and technological worker who is struggling in the front line of scientific research.

And now, although he is also doing scientific research (basic scientific research), there is a pretty little maid next to him who takes care of food and daily life, and there is also a "driver" standing by at any time. This welfare, this treatment, this enjoyment, Li Zexuan said, Such a happy engineering dog, he will be willing to do it all his life!

"Hmm, it's delicious, what delicious food did Aunt Zhao cook tonight?"

Li Zexuan left the room and came to the main hall, only to notice

It was almost completely dark outside, he sniffed with his nose, and immediately smelled a scent of vegetables, so he hurried to the dining table, picked up his chopsticks and prepared to eat.

"Hey, young master, you haven't cleaned your hands yet!"

Seeing this, Xiaoxi quickly grabbed Li Zexuan and said.

"Uh....yes!"

Li Zexuan looked at his dirty hands. He was averse to the cold. It was a taboo to eat without washing hands after the experiment. What he did today was just an ordinary experiment. Miserable?

Thinking of this, he hurriedly followed Xiaoxi to wash his hands before returning to the table to eat.

"Xiao Xi, have you eaten?"

"Master, of course, you have to eat Xiaoxi before eating!"

"Well, it's really annoying, sit down and eat together, you know, young master, I hate these rules the most!"

Xiaoxi glanced at Li Zexuan in embarrassment, and finally went to serve herself a bowl of rice and sat opposite Li Zexuan. Anyway, it was not the first time. A few months ago, she and Xiaohe were in Zuixianlou with Li Zexuan. The table has eaten.

"Come on, eat a lion's head and grow more meat!"

Xiaoxi: "...Thank you, Master!"

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