Can you sell me the radio in this car?" Duan Yun glanced at the car radio, then turned to Wang Baoguo, the deputy factory director, and asked.

"This is also a scrapped car, how many years have been put in the garage to eat ashes, the radio on this car does not know whether it can be used, if you need it, I will ask the workers to unload, you just take it, forget the money, I am in charge of this matter. Wang Baoguo said very simply.

"That's so thankful!" Duan Yun said gratefully.

"It's nothing, it's scrapped. Wang Baoguo smiled when he heard this, and then turned his head and asked the master of the car squad to get the tools and unload the car radio.

When the radio was removed from the car, he was more or less surprised, this car radio was much more clumsy than he imagined, about the same size as the drawer of his desk, but the weight was so large that Duan Yun could only hold it with two hands, and it was a little difficult to hold.

After putting the radio in the trunk of his 212 jeep, Duan Yun thanked Wang Baoguo and drove away.

This time, Duan Yun did not drive back to the factory, but went directly to his workshop in Sipailou.

"Brother, what are you carrying?" Seeing Duan Yun park the car at the door of the store and lift out a drawer-like thing from the trunk, Cao Dong asked curiously.

"What are you looking at? Come over and help. Duan Yun greeted Cao Dong.

"Uh. Cao Dong immediately stepped forward and took the car radio in Duan Yun's hand.

"Put it in the backyard. Duan Yun ordered Cao Dong.

Then the two went to the backyard of the store together.

At this time, in the back of the shop, Cui Lin and Lei Zi were working, and when they saw Duan Yun coming in, they all stopped what they were doing.

"Brothers, come here. Duan Yun motioned for everyone in the courtyard to gather, and then asked Cao Dong to put the car radio on the table in the courtyard.

"What kind of treasure is this?" After putting the car radio on the table, Cao Dong immediately took out a cigarette and handed it to Duan Yun, and Lei Zi next to him immediately took out a match to help Duan Yun light it.

"Clean up this radio for me, dip a burlap in alcohol, and be careful not to hurt the wiring and circuit pipes inside. Duan Yun took a puff of his cigarette and said to the two of them.

When the three of them heard this, they immediately took out the sackcloth and liquor from the room, and carefully wiped down the car radio.

After pouring out the dirt inside and removing some of the rust and dirt from the wiring, the electronic components inside were immediately revealed.

The control panel of the radio is printed with the logo of "Shanghai Radio No. 4 Factory", which is a Veuve Clicquot brand, and there are two knobs on the panel to adjust the band and volume.

From the nameplate on the back of the radio, it is known that this Veuve Clicquot car radio is a mid-70s product, and the power amplifier is 3AD6 push-pull, with an output of 7 watts.

This is definitely an antique car radio, the shell is made of 1.5mm iron plate, two poles of high amplification, three levels of medium amplification, the material is very thick, the circuit board is all hand-soldered, the solder appears a little mottled, but the soldering point is quite strong.

Duan Yunchi looked at the circuit board for a while, and quickly figured out the output principle of this circuit board, in general, this car has more power in the car radio than the original home radio, and it can be seen as a strengthened version of the home radio.

"Brother, where did you get this radio? It looks weird?" Cao Dong also found out that this should be a radio, and then asked Duan Yun.

"It's the car radio in the car, which is more advanced than what we use at home. Duan Yu didn't explain the principle of this radio to Mr. Cao's people too much, but just said to them: "The three of you come over and take a good look at the circuit board here, and then go to the house to get me paper and pens and draw a complete circuit diagram." ”

Duan Yin did this, obviously wanting to test the electronic level of Cao Dong, Cui Lin and Lei Zi.

When Duan Yun came here to drink before, he once asked the three of them to learn electronic technology well, and if they set up an electronics factory in the future, they may have to select the backbone of management technology from among them.

Duan Yun has no way to do this, these young workers around him who are loyal to him are basically not highly educated, and it stands to reason that these people with low cultural level should not be selected as the backbone of management and technology, but Duan Yun, a highly educated talent, can't be recruited for a while, basically highly educated talents, as soon as they leave the school, they will be scrambled by major state-owned enterprises, and in desperation, Duan Yun can only be a general among the dwarfs, and train and select the backbone of the future electronics factory from among them.

After hearing Duan Yun's words, the three of them immediately found paper and pens, then removed the circuit board in the box and began to draw the circuit diagram on the paper.

Cao Dong, Cui Lin and Lei Zi really listened to Duan Yun's words, worked during the day, and began to gnaw on books at night.

When they used to go to school, the three of them didn't study well, mainly because they were too playful, and their energy was not focused on studying at all.

But now it's different, since following Zhao Yun, the three of them have made a lot of money, and they have also seen how Duan Yun quickly started with technology, so Duan Yun is the idol of the three of them, Duan Yun's words they must listen, even if they don't like to learn, they have to learn hard.

So since Duan Yun came here to drink wine and told them to learn electronic technology well, the three of them gradually gave up the habit of playing poker at night, and they held books to read when they had nothing to do, and communicated with each other, which was not an easy thing for them, but after this period of study, the three of them made rapid progress in electronic technology and had learned to draw basic circuit diagrams.

The other three had already done the work of soldering circuit boards before, so it was not difficult for Duan Yun to let them draw circuit diagrams this time, and after wiping and cleaning the car audio circuit board, the three of them carefully observed the circuit board and drew it.

And when Duan Yun finished smoking a cigarette, Lei Zi had already finished drawing the drawings first.

Immediately afterwards, Cui Lin and Cao Dong also drew a circuit diagram.

In fact, the circuit diagram of this kind of radio is not difficult for the three people who have often worked with circuit boards before.

Duan Yun picked up the circuit diagram drawn by the three of them and looked at it, then nodded with satisfaction.

Although the drawings were a little sloppy, the connections of the originals were still quite clearly marked, and Duan Yun could easily see the construction principle.

"It's ok. Duan Yun smiled at the three of them, and then said, "It seems that you have made rapid progress during this time, and you usually don't read less, right?"

"Brother Duan let us study, we must study hard, otherwise we will be able to keep up with Brother Duan's footsteps." Cao Dong said with a smile on his face.

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