readx;

The university course has already started, and at the beginning, it was still a foundation, and the content was not challenging for Lin Hong at all, and he had already mastered these knowledge. Pen? Interesting? Pavilion wWw. ｂiquge。 info""None/pop-up window/advertisement full text

The content related to computers is just a basic introduction to computers, which is roughly to talk about the history and basic principles of computers, such as what is binary, what is hexadecimal, etc.

This kind of course is designed for people like Wu Dong, first assuming that the students don't know anything about it, and then the teacher follows the textbook step by step.

But for a student like Lin Hong, who has already mastered the content completely, or who only needs to spend less than an hour to grasp the entire content of the book with a little flipping, it is too much time to do so.

It takes a semester to study such an introductory course, which has to be said to be a kind of torment.

Lin Hong disappeared from the class immediately after taking two classes, and he felt that wasting time like this would be an unforgivable mistake for himself.

The courtyard has been rented by him, and that Professor Yan is a very talkative person, at least in Lin Hong's opinion, he is very talkative, and in order to make Lin Hong pay a little less intermediary fees, he actually reduced the rent by half.

In the past two days, Lin Hong has been busy arranging the laboratory.

He removed the laboratory at home, asked Pan Pan to go back, packed the equipment directly for him, and sent it to Xiang.

Many of those devices are not available in China. Otherwise, it wouldn't have been so troublesome.

Lin Hong ran almost the entire electromechanical and equipment market in Beij City, and finally set up the prototype of the laboratory.

When he was in the military training base, he did some research on the metal card suit, but due to the conditions, he could only see the skin, and this time. He decided to make a replica of the metal plaque and make a 10-fold scale model.

The reason why there is this possibility is because on the one hand, Lin Hong has a relatively in-depth study in this area and is familiar with the unconventional role of these circuits, and on the other hand, because there is no special model of the components used in the metal plate, and the things used are all things that can be found on the market.

One of the most shocking aspects of the basic circuitry involved in energy field technology is that the things used are all things that have existed a hundred years ago. Examples include common resistors, capacitors, and coils. The basic technology used to create energy sites is also derived from electric and magnetic fields, and the most critical point is frequency.

A metal plate is actually a miniature circuit board. Using a technology similar to that of a chip, the manufacturer carved the circuit diagram onto a small metal plaque. The circuits are small, but they can be studied with tools such as magnifying glasses or microscopes.

Lin Hong specially purchased an electron microscope from the second-hand market of experimental equipment, scanned the subtle circuits on the metal plate, and finally restored it.

It seems to be a small brand, but the circuit on it is quite complicated, after Lin Hong scanned the circuit, he studied it for a long time, and he couldn't understand the principle for a while.

He roughly divided the circuits, mainly including the receiving circuit and the excitation circuit.

The receiving circuit is a structure that receives the energy released by the charger. It is somewhat similar to the principle of a radio, except that compared to a radio receiving radio audio signals, it receives vibrational energy, and can convert and store the received vibrational energy.

The excitation circuit is the circuit that generates the energy field. Once you have the energy, this part of the circuit will come into play.

After Lin Hong's analysis, there is a very important cyclic gain structure. This structure allows subtle energy vibrations to oscillate back and forth in it. Its intensity can increase with each oscillation, and so on many times. You can achieve the ideal state.

After all, this is a fist product that the other party has spent a long time researching, and Lin Hong can't fully understand it for a while, but he got inspired by the cyclic oscillation circuit, so he designed the drawings of the superbrain timing signal generator.

Now that the drawings are drawn, the next step is to figure out how to make them.

This signal generator is relatively a bit complicated, not like before, just find a scrapped copper clad laminate, and then solder some components on it, but need to make the circuit diagram on the board first.

Since it was only a sample, Lin Hong couldn't directly hand it over to the manufacturer to print the board directly, so he had to do it himself.

It is not impossible to make their own PCB board, in fact, many radio enthusiasts have had such an experience, sometimes they design a circuit by themselves, and if they want to realize it, they must make it themselves, and even some masters have used this way to make a power amplifier circuit with quite complex circuits.

There are many ways to make PCB boards, the more common ones are knife engraving, photosensitive plate method, heat transfer method, screen printing method and so on.

Lin Hong decided to use the simplest knife engraving method, after all, other methods require certain equipment, such as thermal transfer printing requires a printer, and screen printing requires professional equipment.

Lin Hong went to the material market and bought back the things he needed, mainly copper clad laminates, carving knives, electric drills and some other small things.

Copper-clad laminate is a copper-clad foil laminate, which is a resin board covered with copper foil on the surface, with single-sided copper-clad laminate and double-sided. This kind of board is the basic material of the circuit board, so it is also called the substrate, which is usually light yellow, with a lot of copper foil circuits on it, and some holes for soldering components.

Lin Hong re-planned the circuit diagram, turning all the curves into straight lines, and these lines did not cross as much as possible, and were reasonably distributed in a certain size area. If the lines are crossed, it means that the design is not very scientific, because after the production, this part can not be directly connected with copper foil, and the two parts must be bridged by using jumpers, which is not only not beautiful, but also has many more processes.

Lin Hong cut the copper clad laminate according to the size of the design drawing, put one side of the copper clad laminate facing up, then covered it with a copy of carbon paper, covered the drawn circuit diagram on the carbon paper, and finally redrew it on the paper with a ballpoint pen according to the circuit diagram line, so that the line was displayed on the copper clad laminate.

If you have a printer or thermal transfer equipment, this step is not so troublesome.

Fortunately, Lin Hong's painting skills and muscle control are very good, and the things he draws are not much different from those printed.

The next step is to use a carving knife to carve it.

This part is a test of vision and technology, using a carving knife to cut the copper foil around the circuit diagram little by little, and to ensure that the line must be disconnected from each other, otherwise it is likely to cause a short circuit.

This step of the work is the most complicated, the general beginner's knife carving kung fu is not home, in the process of carving, it is easy to walk the knife, as long as there is a place to accidentally depict the error, may the whole board will be scrapped. Therefore, usually, the knife engraving method to make PCB boards is used to make some relatively simple circuit diagrams.

Lin Hong's control of his strength has reached a very astonishing point, just carving something is not difficult for him, basically he succeeded in this process at one time, and there were no mistakes.

After the successful engraving, the prototype of the circuit board has been basically formed. Next, Lin Hong began to punch holes in the originally designed place.

These holes are reserved for the components, and the circuit diagram is only used as a wire, and its purpose is to connect the components. Regardless of the size and beauty of the thing, it is completely possible to replace the copper foil circuit with wires, but the things made in that way may not look very good, and the wires are staggered and messy.

The final process is to polish the copper foil with sandpaper and apply a layer of rosin alcohol to the copper foil, which has two advantages, one is to prevent oxidation, and the other is to help with the subsequent soldering.

At this point, the board is ready.

Lin Hong picked up the board and carefully checked it twice, comparing it with the original drawings repeatedly to prevent himself from being dazzled in the process of depicting the circuit diagram.

After inspection, he found that there were two places where he had made a mistake, and where they should have been connected, he crossed out the copper foil.

Lin Hong didn't bother to re-depict it, anyway, it was just a sample, he punched holes at the two breakpoints, and then welded them with enameled wire, forming two jumpers on the board.

Lin Hong wanted to continue soldering components, but he suddenly remembered an important problem, on this circuit diagram, there are two integrated blocks and some three-legged components, but he did not pay attention to this when drawing the circuit diagram. In this way, the direction of the punch hole in the circuit diagram he depicted is completely opposite to the actual one.

Because Lin Hong drew the layout of the circuit, the corresponding holes should be completely opposite to the pins of the components, and Lin Hong did not notice this before.

Looks like I'm still inexperienced! Lin Hong sighed.

This problem, if you don't do it yourself, it's really hard to find, and the drawings may be understood, but when you actually do it, it's a different matter.

It seems that you can't steal it if you want to be lazy, and those few triangular parts may be able to make do with it and twist it for welding, but what about the integrated blocks? Not only are the pins relatively short, but the number of pins is more than four, which is simply improvised.

There was no way, Lin Hong had to adjust the circuit diagram, cut the copper clad laminate from the new, re-depicted it, and re-depicted it.

This time, there were no more problems, and he successfully soldered all the components.