doomsday survival

Chapter 221 Power Generation Devices
The burning charcoal emits a bright red light, and under the fan's fanning, red stars fly out, and at the same time, a lot of heat is sent to the grilled fish, making it emit a tempting aroma.

Shi Jian's method is very simple, just pickle the fish with wine and salt, then fill the belly of the fish with green onion, ginger, garlic and coriander.

Although there are no various condiments for seasoning, the aroma of the fish itself can be brought out better, and the chili powder sprinkled at the end makes it extremely delicious.

Shi Jian's fire is also controlled just right, every fish is roasted so tender on the outside and tender on the inside, making people salivate just by looking at it.

Li Yeyue gently fluttered her nostrils twice, inhaled as much of the tempting fragrance as possible into her nose, then pursed her lips, stretched out her lilac tongue and slid gently between her lips, then asked a little timidly : "Can this be eaten now?"

Seeing Li Yeyue's greedy look, Shi Jian couldn't help laughing, and said, "Of course, you can eat first." Then, he handed over the grilled fish in his hand.

Hearing that Shi Jian said it was ready to eat, Li Yeyue couldn't wait to reach out and snatch the fish from Shi Jian's hand, picked up a piece of chopsticks and put it in her mouth without being afraid of the heat.

As a result, Li Yeyue was scalded as expected, but she was reluctant to spit it out, held it in her mouth, and blew a few breaths, and only chewed carefully after the fish cooled down.

"Delicious, delicious." Li Yeyue said vaguely.

Shi Jian glanced at her, shook his head, and continued to concentrate on his barbecue business.

Looking at Li Yeyue's appearance, Xia Qing couldn't help but smile.And Xia Rou tightened her nose, snorted, and said, "I just know how to eat, and I really don't treat myself as an outsider."

Li Yeyue immediately felt embarrassed when she heard the words, she didn't know what to do with the grilled fish.

"Xiaorou, don't be rude." Xia Qing said with a straight face.

"Oh, I see." Xia Rou lowered her head and replied in a low voice.

"Well, Sister Qing, I'm sorry." Li Yeyue also lowered her head and whispered.

"Hey, that fish, the three of you should eat it together. Anyway, there is still some fish left, so it will be ready soon." Shi Jian interjected.

"Oh, yes, I forgot about it." Li Yeyue said.

Xia Qing took a plate and asked Li Yeyue to put the grilled fish in it, and the three of them shared it together.

Speaking of sharing, it would be more appropriate to say that Li Yeyue and Xia Rou are fighting for it. If Shi Jian hadn't handed over another one in time, I don't know what the two of them would be fighting for.

Xia Qing, who will be a mother, fully showed her mature side at this time. She hardly participated in the battle between the two, but only helped pick out some fish bones to prevent them from being pierced by fish bones.

Crucian carp has many bones, and they are all small bones.Even though Xia Qing picked out some, Xia Ruo and Li Yeyue still got stabbed from time to time, and Shi Jian kept sending over freshly grilled fish, the war between the two girls finally came to an end.

Shi Jian grilled seven or eight fish in one breath, and after seeing that it was almost done, he didn't continue to grill. He went and sat between Xia Qing and Xia Rou, and said, "You are so welcome, you don't even wait for me , Today is my birthday, and I have to serve you, it's really hard life."

Hearing Shi Jian's complaints, the three of them felt embarrassed, especially Li Yeyue. After all, her relationship with Shi Jian was not so harmonious, and she insisted on coming here today, but when she encountered food, she forgot It is Shi Jian's birthday.

"I'm sorry." Li Yeyue said in a low voice.

Seeing this tsundere girl say sorry to him, Shi Jian felt as if he had just won a battle, but he still said with a straight face, "A word of sorry is enough?"

"Then what else?" Li Yeyue asked with a bitter face.

"Why don't you sing me a birthday song?" Shi Jian laughed.

He was just joking with Li Yeyue, but he didn't expect Li Yeyue to say with a bitter face: "I, I won't..."

"Okay, it doesn't matter, just sing along with us." Xia Qing said.

Then she sang the birthday song with Xia Rou. Although Li Yeyue couldn't sing, the rhythm of this song was very simple, and she could learn it quickly, so they sang along.

Shi Jian spent his first birthday in the last days amidst the melodious singing of the three girls.Although there is no cake, no candles, and no birthday greetings via phone or text message, Shi Jian feels a sense of happiness that he has never had before, which he will never forget.

After his birthday, Shi Jian once again entered the ordinary life of the past, living a monotonous life of three points and one line at school, canteen, and home every day.

Of course, Shi Jian did not forget the DC motor he had always wanted to transform. He spent almost all his spare time on it. Fortunately, people in the tribe are now devoted to transporting supplies, and they don’t have to teach adults at night, so time Still relatively abundant.

However, there are also many difficulties. After all, Shi Jian is only a major in mechanical design, and he doesn't have much knowledge in electricity. Although he knows some, he is a little dark-eyed when it comes to modification.

Originally, he had placed his hopes on the materials in his mobile phone, but what he wanted to write at the beginning was just a historical travel novel. Although there were a lot of materials stored, there was no electrical content, so he had to explore by himself.

If the motor in hand is a brushed motor, then everything is simple. DC motors and generators can be directly converted. Just turn the rotor of the motor to convert mechanical energy into electrical energy and directly generate electricity.

But the motor in hand now is a brushless motor. When the rotor magnet rotates, the output of the wire group coil is a three-phase AC power supply. It must go through three-phase rectification, voltage stabilization, and filtering to obtain a smooth and stable DC voltage. .

"Since the output is a three-phase AC power supply, only three of the eight wires are needed. Which three are the right ones?" Shi Jian looked at the eight wires and muttered.

In his memory, the brushless DC motor should have a Hall sensor inside, which is the main sign that distinguishes it from the brushed DC motor.The Hall sensor requires a total of five wires, two power wires and three signal output wires. According to the design specification, these five wires should be a group.

After thinking about this, Shi Jian quickly judged that the five thinner wires are the wires of the Hall sensor, and the other three thick wires are the output wires of the winding coil.

After finding out the wires, all that remains is to design the three-phase rectification, voltage stabilization and filter circuits.Although Shi Jian knew the basic principles of these circuits, when he actually implemented them, he discovered the troubles.

As far as electronic components are concerned, Shi Jian can get them from those old electrical appliances moved from old areas. Although many components are already integrated circuits, basic diodes and filter capacitors are still indispensable. These are the rectification and filter components. required by the circuit.

What he was really worried about was that he didn't even have the most basic three-purpose meter in his hand, so he couldn't measure whether the components were in good condition.After so many years, it is estimated that not many of these electronic components can be used normally.

It is not possible for Shi Jian to make a three-purpose meter out of thin air. Now he just hopes to find a three-purpose meter from the old district. Only in this way can qualified electronic components be screened out.

For this reason, Shi Jian specially asked Feng Kuang to bring a message to him, so that he could search in the old district to see if he could find tools such as three-purpose meters.

As a result, on the second night, Feng Kuang came back directly.

Seeing Feng Kuang coming back, Shi Jian was stunned for a moment, and asked, "Old Feng, why are you back? Don't you go to the old district to collect supplies?"

Feng Kuang smiled and said: "Are you bullying the old scalper? You are so angry that you don't drive and arrest me as a laborer. Then I can't arrest another laborer?"

"Who else knows how to drive besides the two of us?" Shi Jian asked puzzled.

"How else can you say that your brain is not bright? If you don't know it, we can teach it. Why don't you let me, the oldest old guy, be a driver for the rest of your life?" Feng Kuang said with a smile.

In fact, driving is not difficult, as long as you study hard, you can learn it quickly.However, Shi Jian didn't think about it. He has always driven the car himself, and only asked Feng Kuang to replace it when it was too late.

In fact, Feng Kuang started taking apprentices as soon as he passed, and Mei Zi was his chosen candidate.

Although the road in the valley is uneven, after driving for such a long time, a road has been carved out, and there is no need to pay attention to traffic regulations, Meizi gradually started to go on the road alone, all she needed was Feng Kuang to sit aside and give pointers. it is good.

Hearing that Shi Jian needed instruments, Feng Kuang immediately let Mei Zi go out as a teacher, and he returned to the village with the two three-purpose watches he had found earlier.Fengkuang found these two three-purpose meters in an old electrical repair shop, but they didn't have batteries, so I don't know if they can be used. They also brought back a sealed roll of solder and an electric soldering iron.

Seeing these two three-purpose watches, Shi Jian felt as if he had found a treasure. This is what he lacks now.He took the mobile power supply first, and measured the voltage and current with a multimeter.Fortunately, one of the multimeters was still working.

Shi Jian modified the output line of the mobile power supply so that it can directly supply power to the multi-purpose meter. He also tested the function of the resistance gear, and it was still intact. Shi Jian's heart was finally relieved.

After getting the equipment, Shi Jian quickly found a bunch of usable components in the old electrical appliances.He and Feng Kuang fumbled to assemble a rectifier and filter circuit, only the voltage regulator circuit was missing. Logically speaking, it could already generate direct current, but the current was not stable.

Shi Jian couldn't wait to experiment. He turned the rotor manually and measured the output voltage with a multi-meter, but he was greatly disappointed by the result, the pointer didn't even move.

(End of this chapter)