The physics teacher's repair shop is at the gate of Huangnigang No. 16 Middle School.

A rammed-earth hut stacked with three black-and-white televisions waiting to be repaired, as well as a number of old radios.

In these years, it is normal for teachers to have side hustles.

Like a yellow mud gang.

The county finances allocate funds to the township, which in turn pays the salaries to the teachers.

If there is no money in the county, the township can only make a blank slip, that is, the monthly salary will not be cashed, and it will be counted at the end of the year.

If there is still no money at the end of the year, wait until the next year.

Teachers are not paid, and are occasionally forced to donate money by the authorities, plus a monthly assessment fee......

Eventually, you have to engage in a side hustle to support yourself.

Lou Nannan's parents raised five cows.

The teacher of the Yuhong class planted seven acres of land.

Physics teacher, runs this repair shop in his spare time.

Fortunately, in the new century, the remuneration of teachers has been slightly improved.

At least the salaries of teachers in Huangnigang have exceeded those in Gucheng County.

The physics teacher pulled out a bunch of drawings and put a lot of tools into a snakeskin bag.

Everyone came to the toy factory together and walked into the idle workshop that Xu Fei often uses.

Since there is no 'lab' module, you have to rely on yourself to analyze the finished product and make samples.

Xu Fei is in Daze, in addition to paying attention to overseas news, the rest of the time is spent learning 'analog circuits'.

While referring to the textbook, we make it by hand, and at the same time, we manufacture the necessary raw materials and semi-finished products with the help of a basic production line.

Include:

Copper, tin, silver, gold......

Aluminum cylinders, tantalum metal, polyester plastics, ceramic films......

Carbonaceous particles, glaze insulation, glaze insulating varnish......

These things are connected in series according to their functions, so there are wires, resistors, and capacitors.

Connect the small horn, the higher the requirements, the more complex the line.

If you add copper-clad laminates, copper foils, prepregs, and chemical solutions made of fiberglass cloth......

Then the circuit is organized to the 'panel', and there is a circuit board.

In order to make the circuit board, Xu Fei prepared a bunch of tools.

Hacksaw blade, fine sandpaper, quick-drying paint, small row pen, small electric drill, knife, carbon paper, rubber water, ballpoint pen, ruler, compass......

In order to test the performance of the circuit board, a bunch of electrical equipment was purchased.

Fortunately, the computer that comes with the fourth-level basic production line has the function of 'true circuit'.

When designing circuits, it can help simulate the overall effect without having to experiment again and again.

At present, with the help of the four-stage basic production line, Xu Fei can make circuit boards the size of 1 yuan coins, with a thickness of 1 mm and a line width of 1 mm, which can control the volume of sound, switch five lines, and turn the power on and off.

In addition, a three-layer circuit board of the same size was made to control the lights on and off.

For example, 200x200 mini light bulbs are arranged on a wooden board, through which 'Xu Fei', 'Factory Manager', 'TEP' can be generated, and even manually switched back and forth.

No matter how many fonts and functions there are, it can't be done for the time being.

Because the more you control, the more complex the circuits and the larger the board.

According to the content of the book, the circuit board is called PCB, not an integrated circuit IC, let alone a microcircuit chip.

At present, these things, along with the operating table, are transported to the idle production line.

Xu Fei introduced his masterpieces to everyone one by one.

Lou's father and the teacher of Yuhong's class were very amazed, "Are you so idle when you are the factory director?" ”

The physics teacher was curious, "Why don't you find a manufacturer to customize?" Or, recruit a group of electrical engineers to help your company design the PCB you want, or even develop EDA, design ICs, microcircuits? ”

"TEP doesn't support this project, and I'm going to do it myself."

"Then you're basically at ...... now The level of the thirties. ”

"How much?"

"The Seventy-Seven Incident."

"Did you start so early abroad?"

"It's all 'printed boards' now, which are green circuit boards, and cartridge PCBs were phased out a decade ago. In addition, the printing technology has also developed from flat packaging to ball array packaging and high density. ”

"Oh, I just want to control the sound, why are you so complicated."

"That's right."

The physics teacher sat on the operating table and learned about the many raw materials, "Let's start with a small speaker?" ”

"I'll see you make it once, what you need, just ask."

"No, let's talk about your requirements first, what kind of tone do you need."

Xu Fei took out Zhang Fei, who had not yet been successfully developed, from the cabinet, "His." ”

"Mechanical Meng Zhang Fei?" The physics teacher seemed to be aware of the toy and nodded, "Is there a metal film?" ”

"Which material?"

"The harder the better."

"Phosphor bronze?"

"I haven't heard of it, it's better to use a titanium diaphragm... In this way, I will list the corresponding materials and you can see which ones can be prepared. ”

Half an hour later.

The physics teacher first makes the voice coil, then fixes the magnet, and then sets the front pole piece, the rear pole piece, and the centering piece.

Then, according to Lou's father's suggestion, the 'hanging edge' was studied to provide damping, so that after the signal disappears, the sound radiation can also be quickly eliminated to ensure high sound quality.

Then the diaphragm, dust cover......

"In general, this is a moving coil cell, slightly more complex than the one you made, the principle is that the output signal of the recording interface will start the current of the amplifier, and the positive and negative electricity of the current will cause the coil on the cell to produce a magnetic field reaction. ++ Repel the diaphragm to retract inward, +- diaphragm to expand outward, one to retract and one to expand, forming a sound. ”

Xu Feimo imitated making one, and soon got a hint from the base.

[titanium horn - bass]

View parameters:

Distortion, Signal-to-Noise Ratio, Frequency Response, Dynamic Scale, Climatic Characteristics, Stereo Separation, Direct Sound, Reflection, Reverberation, Reference Oscillation, Aural Characteristics......

If the previous trumpet was 1, now it has reached 99.

At the same time, the physics teacher and Lou's father worked together to improve the VCR, design and adjust it, which could match the circuit diagram of the sound of the 'mechanical Meng Zhang Fei'.

Another half hour later.

Four old men, install batteries, stereos, players, and circuit boards for Zhang Fei.

Xu Fei twisted the energy, and the power supply had been activated at this time, and if the power of the clockwork was exhausted, he would take the initiative to turn off the power.

"There was a teacher who helped, and I really got twice the result with half the effort."

Subsequently, put down Zhang Fei.

"Wow, yes~~~"

Mechanical Zhang Fei held the Zhangba Snake Spear in his right hand, clenched his fist with his left hand, and after taking a pose, he rushed forward with his weapon.

The sound is like Optimus Prime, full of heavy metal texture, and at the same time has a slight echo.

It does seem that it has more selling points than the silent version.

However, the teacher of Yuhong's class frowned slightly, "This is like singing, and it doesn't reflect Zhang Fei's skills." ”

Father Lou nodded, "It should be full of murderous energy, ten thousand enemies, it is very fierce than Guan Yu." ”

The teacher of the Yuhong class, who is over sixty years old, pondered for a moment, his eyes lit up, picked up the recorder, and lowered his throat:

"I'll kill, I'll kill, I'll kill~~~ Hahahaha!"

A dull and hoarse voice echoed through the workshop.

Xu Fei was startled with goosebumps.

Lou's father and the physics teacher also had ghostly expressions on their faces.

The teacher of Yuhong's class put down the recorder and smiled confidently, "How is it?" ”

"Absolutely!"

Xu Fei hurriedly copied the magnet sheet.

The teacher of Yuhong's class stopped, "The action is not right, you should slash wildly, like a wind and clouds, and finally carry the wine jar, look up to the sky and laugh heartily." ”

"This suggestion is worth 100,000 red bills... No, I'll give you a commission, and for every piece sold, you take 5 cents. ”

"No need, I think it's suitable for me to come to your company to make toys."

"Huh?"

"I have been the king of children all my life, but in the end I lost my job."

“？？？”

Lou's father explained: "Now the red class is not raised, but the large and small classes are changed, Lao Jia does not have a teaching qualification certificate, and he has no pension when he retires. ”

"Your voice is enough for you to retire in the company."

"No, I think I can still voice more characters, Huang Zhong, Wei Yan, Cao Cao...... I don't understand them, but I understand young people better. ”

"Sit down, let's continue."

The physics teacher looked at the time, "Are you going back to drink?" ”

"Wouldn't it be more inspiring to bring the food over and drink it while researching?!"

After Xu Fei finished speaking, he gave Ma a look.

The latter returned to finance and brought three bank cards with a limit of 10,000 yuan.

"One for one person, eight zeros for the password, don't refuse, this is foreign company's money, don't don't want it in vain."

"I can't ask for this." Father Lou's face was slightly red, and he refused: "Originally, I was a treat, but I thanked you for finding a good job for Xiaohu, and Nan Nan has also become a regular, what is it now?" ”

"Harm, what's polite, the timbre and dubbing of our follow-up characters have to be remade, if it is done well, cards are indispensable."

"Are foreign companies so wealthy?"

"No, this is a copyright buyout, and it will be used in animations, games, and even movies in the future."

Xu Fei took out his mobile phone and notified the design consulting company to copy the magnet sheet and produce Zhang Fei's promotional video as quickly as possible.

On the 20th, the Three Kingdoms Brawl began, and today it is the 16th, four days, a bit rushed.

Soon, Tang Mo came in person, "Factory director! ”

"Listen to Zhang Fei's voice."

Xu Fei once again gave the mechanical toy a boost.

After Zhang Fei landed......

"I'll kill, I'll kill, I'll kill~~~ Hahahaha!"

"This!"

Tang Mo's eyes widened, "This sentence alone is enough to create a complete image, but can there be a few more paragraphs?" ”

The teacher of the Yuhong class pondered slightly, raised his chest, and said loudly: "Ande is as fast as Yide, and he will punish the negative people in the world!" ”

"Human snobbery is still in the past, who knows that heroes are white? This can be used as Zhang Fei's static lines. ”

Xu Fei thought for a while, "'Yanren Zhang Fei is here, who dares to fight to the death with me' and the like, it can be launched later, the unequaled version of the Three Kingdoms of Machinery, tentatively two lines, two sets of actions, and the promotional video will be made within three days, taking advantage of the popularity of the Three Kingdoms Brawl, the 'Wushuang Mechanical Zhang Fei' will be launched." ”

"Okay, director."

Tang Mo turned around and took his leave.

Xu Fei picked up Meng Zhang Fei and calculated the cost.

The horn occupies a production line.

The player occupies a production line.

The internal structure of Wushuang Machinery Zhang Fei is complex, even if the assembled version is not used, the manufacturing difficulty is still not low. Huangnigang Toy Factory produces speakers and players, and Daze produces Wushuang Machinery Zhang Fei, according to the total safety power, the daily output should not exceed 10,000 sets.

At present, 360,000 sets of ordinary machinery are shipped every day, and the sales volume is about 3.2 million.

If you want to keep it profitable, you can't fix it at less than 320 red bills.

The research and development has a cost, and the speaker uses titanium alloy, plus the technology of 'iron magnetic sheet sound storage', as well as creativity, dubbing and so on.

Domestic 600 red banknotes start, Wadao and South Stick at least 1200 red banknotes......

With such a high price, I don't know if anyone will buy it.