What is an analog circuit? The most difficult and basic thing is that under the premise of limiting discrete components and general integrated circuits, undergraduates can't do it, and postdoctoral students can't. This kung fu is so cruel! ! ! Different from math problems and foreign language homework, it can be solved by improving one academic level; Doing business, making achievements and playing stocks can cover up problems with high investment, which is not feasible here! ! Whether it is analog circuit technical indicators, special functions, analog computers, etc. , it is hard! ! ! Many parameters can be calculated or debugged, and they are well-founded. This is not a skill that can achieve the same effect by downloading circuit imitation, but a complex and flexible way of thinking in time and space. We should also give full consideration to market supply conditions, customer requirements and the highest level in developed countries. The thinking mode of mechanical mechanism design and special processing technology is similar. I'm good at this. I have contacted many publishing houses and am willing to provide a complete set of innovative teaching materials from basic circuits to high-performance application examples. They are unwilling to publish them. What they want is the original textbooks translated from abroad and copied from foreign textbooks. Now we are seeking sponsorship from large enterprises. Please contact the director of the Overseas Chinese Affairs Office of the State Council for details. Analysis of the present situation and countermeasures of China's industrial development under the economic crisis: Make the competitive advanced product design materials, process know-how, processing skills, debugging principles and sales strategies completely free of charge, so as to simplify and industrialize enterprises. I contacted the publishing department, but they refused. People's first cognition is the most important. At present, the level and ability of teachers are generally low, so they can't step over the threshold. They can't answer students' questions in class, laboratory and graduation project. Those dozens and hundreds of pages of mathematical formulas were copied from foreign original books, and then they copied the translated textbooks. You can't even design and debug the basic circuit, so your youth is ruined! What are the characteristics of the circuit structure of high frequency power amplifier? Deep understanding and debugging details of high-frequency power amplifier with high efficiency, high reliability and no burning tube. Because it was forced to be laid off, I won't introduce it. After I was laid off, I still kept thousands of high-frequency ceramic skeleton coils and a high-frequency current output by 3DG 12 oscillation, which can light the indicator bulb of electron tube radio through capacitive coupling. This is an incandescent lamp with rated voltage of 6.3V and working current above 100 mA. I have been in contact with many publishing houses for more than 30 years, and they are unwilling to publish; Originally, it was to be sold at the cost price of tens of yuan, and the debugging details involved a variety of actual circuits. The existing science and technology books and textbooks did not have these contents, and the imported version of solid-state circuit textbooks did not have these contents. Under the administrative orders of deputy provincial cadres who were treated as departmental cadres, all these high-frequency ceramic skeletons were destroyed by the garden department. Take the low frequency analog circuit as an example. When undergraduates are weak, it is useless to go to graduate school. This is different from mathematics, foreign languages, Chinese, machining and bioengineering. Some middle school students can't do college entrance examination questions, but those with higher education may do them. This translation writing pupil can't do it, but he can do it with a high degree of education and can't make a famous work; If this part can't be processed, the imported processing equipment will be solved, and the material manufacturing level will always stagnate; Under this genetic condition, the research level of the project can not be achieved, and imported reagents, equipment and the latest foreign literature will be brought down, but the localization of imported reagents is impossible for a long time; No matter how high the level of bicycle thieves and locksmiths is, they can't make sophisticated mechanical locks in developed countries; No matter how brilliant the medical skills of clinicians and surgeons are, they can't produce advanced diagnostic instruments, surgical instruments and drugs; No matter how long a pilot can fly safely and fly over complex climate and environmental conditions, he can't build a large plane or a high-performance plane. As far as analog circuits are concerned, downloading circuits from the Internet is incomplete. If you don't understand the design process, you can't adjust to the best technical indicators. For high-frequency circuits, there must be a design basis and a debugging basis, which are not available in the market, schools and document libraries. Only a few people can sell integrated circuits. No matter how skilled the integrated circuit is, it is impossible to use discrete components. It is a leader to design integrated circuits with imported software with device architecture, but the integrated circuits designed with millions of dollars of software can't capture the international and domestic markets, get back the capital and get into trouble. "Analog Electronic Technology" designed the circuit. Ouch, this was the basic work 30 years ago. What age is this? I just went to the postdoctoral laboratory to ask, and the graduate student he took shook his head. They are masters of conquering the frontier topics of science and technology in the world and future Nobel Prize winners. Forget it, don't you just use integrated circuits? You are uncivilized! You have read bad books! ! ! Analog electronic problems About the rectangular wave oscillator with adjustable duty cycle, I completely realized it with domestic electronic components 30 years ago. Wider duty cycle. The duty ratio is displayed by the pointer instrument, which can generate a peak voltage of 0 ~ 300 volts. The output current is indicated by thermoelectric effect high frequency ammeter, with full scale of 5 amps and peak current of 0 ~ 15 amps. The power transistor adopts 3dd101f. Multiple power transistors are connected in parallel, and the minimum pulse width is 1 microsecond, and the pulse width and pulse repetition period are independently adjustable (only when the duty ratio is disturbed). It can be called a high-power and high-voltage pulse generator, which is used for pulse aging of thin film resistors and designed according to a standard of IEC. At that time, our talents graduated from middle school. Therefore, the system has changed, opened up, reformed, democratic and free, but the ability of the top scholar in the college entrance examination and postdoctoral fellow is not as good as that of himself 30 years ago. Questions about 24V DC wheelchair brake motor
Just sell it to me. I bought two imported ones today, and I dismantled one on the spot. Because it got stuck, I fixed it on the spot. It is planned to lend all kinds of vehicle exhibits to local science and technology museums free of charge, and the design, procurement, assembly and debugging of its control part and transmission part are all open, allowing downloading, and CD carriers can be sold at cost. The modified Japanese moped controller greatly improves the utilization rate of battery capacity, and its original design drawings have been provided to the person in charge of a science and technology museum for free, with 30 drawings. China's science and technology books, diplomas, academic qualifications and professional titles can't replace the above functions. If the official science and technology museum doesn't accept it, please set up a folk science and technology museum to provide effective and substantial original design materials to the visitors at a near-cheap price. This is true patriotism, the most efficient use of resources, the greatest contribution to society, and the fundamental improvement of national quality and the international competitiveness of national industries. A large number of sales quotas and market shares of charged goods in the market are based on unspoken rules such as trade secrets, and even if the design and manufacturing are advanced, it is not necessarily just. Your computer and mobile phone are high-end products now. Do their manufacturers teach you to start from the basics and create innovative products that challenge them? Their whole set of design, procurement, production technology and testing technology, not to mention the core and key, even the existing non-patented technology, have been banned! Therefore, China now says that he wants to "take the market and let it test". It is a major manifestation of incompetence in management. From the publication of basic skills and production know-how, we should combine the daily necessities used by ordinary people to uncover industry secrets; For the world's leading high-end luxury goods with high physical cost and few customers, such as the next generation keyboard, harmonious telephone, high-speed response keyboard for playing electronic online games, etc. For bicycle anti-theft locks with high reliability, various practical design and production materials should be disclosed. By grasping both ends to guide, inspire and motivate enterprises, individuals and students to design and manufacture a wide range of products with mid-range and market competitiveness, that is, to improve the overall quality of the nation, which is what the ancients said; Take the law, only get it; Which do you think is more effective, the champion of the college entrance examination, postdoctoral or doctoral tutor? Talking about innovation and transformation is a waste of social resources, a waste of students' precious youth, a ruin of their own future, and they can't hold their heads in front of developed countries and multinational companies. It takes a lot of time and money to make hardware. Without decades of continuous experience, financial support, production practice verification and business practice suggestions, very few people can come out. One is the high elimination rate, and the other is the lack of funds and time support. More importantly, many people don't know where they are wrong at the end of their lives. What's wrong with it I have no idea what the best way is under the constraints of historical conditions and environment at that time. Science and technology are still excellent, and being admitted to the top of the college entrance examination is affordable and convincing! ! ! Employment is the overriding primary task and the foundation of human survival! ! ! Should the government give money to the poor? It is necessary to disclose all the information about the design, processing, adjustment and parts procurement location of the exhibits of the Science and Technology Museum, teach people to fish, and improve the quality of the whole nation and the whole people. Nowadays, all textbooks are copied, and it is fashionable for system integration and high-tech assemblers to spend money on them. Of course, the strategic secrets of the country should be kept strictly confidential, and the commercial secrets should be protected by the beneficiaries.
Academic research done with social resources abroad is generally completely open. A lot of research done with national resources in China should be made public, and the teaching materials and experimental books in colleges and universities should be made public, otherwise academic corruption will be aggravated! This is the embodiment of being responsible for the use of national and social resources. In China, knowledge is open, competition in substantive content and technical means is open, actual devices can be copied in a third party for free, technical indicators can be measured by an independent third party, and performance comparison data and indicators can be made public. This is the only way to thoroughly improve basic education and cross the long-term threshold, and the state should pay the relevant fees; This is no substitute for plagiarism. The next-generation keyboard I designed 25 years ago has been made public for free in several industries because there is no patent application and no laboratory. Provide innovative exhibitions to science and technology museums and popular science exhibition halls, disclose all design, procurement, processing, debugging and maintenance materials, and improve the basic quality of the whole people. Who can tell me something about the 1970s and 1980s? Just talk about the experience of the older generation. Textbooks, industrial equipment and technical innovation materials in the 1970s were completely open, and the whole country learned from each other and exchanged information without reservation. The utilization rate of raw materials and equipment is the highest, and all kinds of machine tools, automobiles, wire cutting machines, EDM machines, pumps, internal combustion engines, motors, clocks, bicycles, lamps and other parts are universal and interchangeable throughout the country. In the 1980s, diplomas, academic qualifications and professional titles were all imported. In the 1990s, low-level repetitive research was mutually exclusive and hostile. As long as it is the low-end products of different manufacturers, the components with the same function are deliberately made without interchangeability, which greatly consumes social resources and harms the interests of consumers. All the obstacles are to earn more money and cheat more money. I propose to provide innovative exhibitions to national, provincial and municipal science and technology museums, and fully disclose all design, processing, assembly and adjustment information to visitors, and announce the procurement locations of raw materials, equipment and accessories. Where is the university? No matter how high the academic qualifications and professional titles are, you can't design and manufacture teaching AIDS, teaching instruments or maintain instruments and equipment; It is best to import teaching instruments with parents' money to imitate the entrusted factory; Use parents' money to invite people outside the school to repair equipment and buy accessories from outside the school; With parents' money, please ask teaching instrument manufacturers to provide teaching experiment handouts, and fill in the author's name to get the teaching outstanding achievement award; The formulas and foreign languages that teach you to recite will never be as good as the contents of the textbooks published by MIT on the Internet. Students should not complain about the high tuition fees. Except for the above teachers, your own basic experiments and professional courses are all at a loss. Innovative experimental projects, challenge cups, science and technology competitions, graduation thesis, Industry-University-Research, science and technology awards and high-investment commercial development are all hidden in the sun, turning real money into piles of garbage! ! ! ! Nowadays, college students and graduate students themselves have no credit! ! ! Thinking about doing "projects" all day is at best downloading other people's designs, reading foreign materials, organizing activities, creating an atmosphere, doing small businesses and so on. And spend money to cheat money on campus! ! ! ! ! ! ! ! ! ! ! ! ! ! Allowing visitors to download these materials probably won't give * * *, so even if I am willing to give them away, no one will pay attention. How does sci help college students? How do we use it? Thank you for your report, Chief:
It should be capital letters SCI and EI. They can help you take the postgraduate entrance examination, make money, find a job, add honor, win honor for your alma mater, and let the school invest more in you. At the same time, it also corrupted the style of study, promoted plagiarism to spread to most undergraduate graduation theses, created a huge potential social crisis for the society and the country, betrayed the country, kidnapped the government by unscrupulous professors and experts, forced the government to inject huge amounts of money, increased tuition fees and state investment, and purchased a large number of teaching and research instruments, resulting in idle equipment, low intact rate, high maintenance cost, rapid elimination of equipment, low utilization rate and high teaching and social cost. Teachers cheat high salaries, import large-scale precision instruments and reagents, and consume a lot of social resources without income, forming a vicious circle with growing momentum. Its essence is the corrosion and destruction of society by hostile countries through their agents in China-traitors and lawless intellectuals. It is a theoretical virus spread by overseas superpowers and endangers national security! ! ! A more brilliant black trick is that the agents of foreign hostile forces hypocritically induce us to put our national strength into castles in the air for the Nobel Prize, do those absurd topics, cheat you so close, and then import the most advanced foreign analytical instruments and equipment, cultivate and enroll in the top universities in developed countries, so that you can realize the highest realm of your dreams. This is a conspiracy made by a traitor, trying to confuse and destroy the utopian fantasy of the country; It is to dig black holes and traps, and it is a demagogic propaganda trick that consumes great national strength and rewards intellectuals who have published three retrieval papers through various schools to kidnap Fu Zheng. This is the fundamental reason why it is difficult for graduates to find jobs, and the products of enterprises are not competitive in the world, so they can only do system integration, and the ability of basic industries has not been substantially improved. They are still decades behind the developed countries. Even the basic level of China 30 years ago is not as good as other countries, and social contradictions are fierce. Therefore, the measures and practical work that are really meaningful to China are to make use of China's resources to produce internationally competitive products, giving priority to national consumption. It is too dangerous to introduce talents, equipment and integrated circuits with huge social resources for the purpose of smashing political achievements! ! ! We must clean up strictly! No mercy! The reward for the three retrieval papers shall not exceed 1000 yuan, and the domestically produced materials and equipment shall not be transformed into international leading commodities. Papers pieced together by systematically purchasing foreign equipment and reagents will turn real money into garbage, which is a trap and theoretical virus of imperialism, greatly consuming national resources, seriously contributing to corruption, threatening the government and endangering the political power. Therefore, the way out for education in China is not generally open, and now it is too democratic and too free. Instead, we should start from the foundation where problems abound, and solidity is the fundamental way. Mr. Zhang Ming said: Various evaluation index systems, such as the number of papers in core journals, the number of international SCI and EI papers, the number of national projects, the number of provincial and ministerial projects, and the total project funds, are actually just entertaining themselves with China's academic characteristics. The academic quality of China's so-called academic core journals is well known. However, under the situation that universities are crazy about the number of papers, one university took the lead in inventing the method of forcing graduate students to publish papers in core journals as a prerequisite for graduation, artificially increasing the number of papers published in schools, and other schools followed suit, making this essentially illegal behavior a new practice in colleges and universities. Graduate students can't publish papers, so they buy them, not only papers, but also pages and academic journals. Therefore, selling pages has become a common practice, which further deteriorates the quality of academic journals. The current situation is that the number of college students in China ranks first in the world, and the number of papers published in China ranks first in the world. However, the competitiveness of scientific research has been declining year by year, and the capacity of basic industries has not been substantially improved, and it still lags behind developed countries for decades. Core journals and papers are published in this way, and so are so-called topics. Often, the bigger the official, the more topics, and of course the less time to do it (assuming that everyone is knowledgeable). Only students can do it. So graduate students become mentors and wage earners with cheap labor. It is conceivable that such a topic can have any quality. From the teacher's basic level, moral bottom line, innovative ability, sense of responsibility and minimum sense of morality, you can clearly distinguish bicycles in China from bicycles in developed countries in every detail, and you can also clearly understand the substantive level of such topics and papers yourself. In the face of regular evaluation, school teachers must come up with something to make up the number, or they will be laid off. Of course, if the output is high, there will be rewards, especially for publishing articles in so-called A-level and B-level publications, and the bonuses are considerable. Should anti-corruption and anti-pornography be combined? So do anti-terrorism and anti-corruption need to be combined? Please talk about your views on the causes of the current world economic crisis, so we must crack down on political hooligans, academic hooligans, economic frauds and triads. What is bourgeois liberalization? That is to say, professors can't start from the basics and rely on the integration of modules, reagents, integrated circuits, computers, instruments and equipment imported from abroad to coerce the government to shed blood and support "high technology", which is consuming and wasting social resources. What kind of equipment and technology morbid intellectuals are scarce in China? There is no shortage of imported international most advanced equipment and analytical instruments, such as Haas gear processing equipment, and China has imported a lot; There is no shortage of huge scientific research funds. We just can't make top-class mechanical equipment machine tools on this basis. The second prototype of the next generation keyboard is hand-made by the roadside. As visitors, China people mentioned that it was illegally shown to the Japanese at the exhibition booth, and they were about to put it on their booth for video recording. Japanese companies used more than a dozen technicians from China to translate more than 100 pages of basic materials and sent them back to China. However, the Overseas Chinese Affairs Office forced designers and manufacturers to retire early. For more than 20 years, designers and manufacturers have no equipment, working expenses and workplaces. People with high professional titles, high academic qualifications and high scientific research funds cannot surpass this step in engineering technology and theoretical analysis. What do you think China needs? Jiang Shuzhuo accused me of being uneducated. I was forced to be laid off and unemployed, so I won't guide you.
Lei Feng! Look at me! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
Assess the quantitative indicators of the Science and Technology Museum and test the rigid indicators of contemporary Lei Feng.
At present, there are strict requirements for the recruitment of personnel and the selection of exhibits in science and technology museums. We should be able to design and manufacture world-class and internationally leading innovative exhibitions, write excellent documents, and simplify the design, procurement, manufacturing, assembly, process flow, fixture, measuring tool, theoretical calculation and analysis process, adjustment, correction, setting, calibration, maintenance, testing, future development and how to simplify it into internationally competitive products.
Can you achieve this hard goal?
Welcome, we look forward to your arrival!
Serious and important topic, nowadays students (including graduate students and doctoral research projects at all levels) are doing garbage &; & In which: ×× year × month × day × month × day × month × day × month × day × month × day × month × day × month × day × month × day × month × day × day × month × day × day × month × day × day × month × day × day × month × day × month × day × month × day × month × day × month × day × month × month × month ×
The following requirements are put forward for the construction of popular science exhibition halls in China, and the same requirements are put forward for the compilation of teaching materials, teaching experiments, graduation papers, teachers' papers and vocational training in colleges and universities, which will be strictly promoted and implemented as national policies and strategies, and as rigid indicators for quantitative assessment of Scientific Outlook on Development, sustainable development and full utilization of social resources:
The key is that the exhibition should be innovative and the technical data of the exhibition should be completely open.
To make a contribution that can stand the test of history, we must have historical significance, serve the public, have courage and courage, and make full and efficient use of social resources, especially the institutions funded by the state financial allocation, especially the scientific research projects funded by the state financial allocation.
There are many popular science exhibitions, and many enterprises repeatedly produce products with the same principle and design at a low level, which is not a good thing.
There are obvious defects in the design and manufacture of the existing exhibits, and the damage rate is high, so the demonstration and interaction can not deeply reveal its engineering and scientific essence; There is no electronic file system for visitors to download for free or at a low price in each exhibition. In particular, it is necessary to fully and publicly introduce the purchasing place and price of materials and parts, the processing technology and debugging process of non-standard parts, and the constraints on design and manufacturing. I hope that visitors will go back to simplify, improve and develop in the future, that is, to achieve the purpose that visitors can manufacture commercial products for sale; The manufacturers of existing exhibits all come for money and keep the design information confidential, which leads to high maintenance cost and long maintenance cycle (some of them have to be shipped back for maintenance), which obviously affects the exhibition effect; We are going to provide more than 100 innovative exhibitions for free, which will be done by students from nearby universities, and only need to provide public transportation fees. This is the national strategy, the foundation of the country; What needs to be pointed out in particular is that at present, the experimental courses, graduation thesis and innovative research of undergraduate and graduate students all lack the support of engineering technology, which turns the country's precious resources into garbage, makes it difficult to find jobs, prevents products from going to the international market, and has no high-end deterrent to developed countries.
In this way, the fare is not a problem, but can be increased. Not only students who are studying will come, but also unemployed people in society and technical backbones in enterprises will come. It is to improve the quality of the people through free innovation education and rapid basic skills education. As a visitor to the exhibition hall of Shenzhen Hi-Tech Fair, I introduced many innovative technologies that have not yet appeared in the international market to Europe, America and Japan in English. * * * It can also generate income by authorizing domestic and foreign counterparts to sell a full set of innovative exhibits.
With the existing operation mode, the operation cost is of course high.
I already have a complete information and prototype of the exhibition, and anyone in the world is welcome to copy and improve it for free. This robot power supply mode is an engineering structure proposed from the results of mathematical analysis, which is complete in engineering application; The disadvantage is that only the probability solution can be achieved at present, and the audience will be asked to do the analytical solution of pure mathematics in the future, which can not be solved by the Institute of General Mathematics and the Doctor of General Mathematics at present; The two exhibitions will be submitted to the relevant departments for examination to see if they are within the scope of confidentiality restrictions, because they have innovative military applications.
Now that a college student has finished his experiment class, you block him at the door of the laboratory, borrow his experiment textbook and ask the content of this tutorial. As long as the question is accurate and detailed, there is no guarantee that it will not be answered. He was just puzzled and dumbfounded when he asked the teacher. You want him to make experimental equipment, that's Baglu, and you can't help it. At present, all the teaching instruments in the school are purchased from the society. The manuscript of the experimental handout is provided by the teaching instrument supplier, and the rest can be imagined. Graduate students are imported software systems, hardware platforms, modules purchased in the market, system integration of application-specific integrated circuits and components, science and technology fast food and modern science and technology platter under the guidance of original foreign scientific and technological documents and databases.
The prototype that has been provided to * * * for free now is that the robot gets power from the plane, curved surface and steps with its feet or wheels, and it doesn't need to carry a power battery like Honda robot in Japan. The robot, which was manufactured by a doctor of robotics who graduated from Tsinghua University after working in Beijing Jiaotong University, and exhibited at Shenzhen Hi-Tech Fair, is also a traction power supply cable, which is both environmentally friendly and innovative, and also puts forward a new method of four-wheel drive competition. * * * * is a demonstration of patriotism, national defense and military, and popular science education; As for the basic information of the equipment that can generate controllable * * * outside the flight simulation training cabin abroad, it has been notified to * * *, and nearby enterprises can manufacture it. In my ignorance, I have never seen a similar device. You can also guide students to write application documents for invention patents (intellectual property courses in universities and patent agents don't teach you! ), these are the last words to increase the ticket price to attract the audience.
Nowadays, the metalworking practice and electronic component assembly practice of science and engineering students are all processing the same basic parts and circuit boards. When finished, ask the teacher to grade them and throw them away. Graduation thesis, innovative projects, etc. are ugly, so let students download online materials for primary imitation; * * * In * *, we should provide practical topics for the next generation of the motherland and make full use of students' experimental and teaching funds. I am willing to voluntarily guide them to create various innovative exhibitions and guide them to cross the threshold of book content and market contact and participate in social competition.
If you have any maintenance problems, you can email me or call me, and I will give you an answer as soon as possible, because problems in industry, equipment and instruments usually need to be disassembled, measured, observed and analyzed on site.
The industrial devices and instruments made in China are basically imitated from the existing products in developed countries, and there are some problems such as simplifying the original design, redesigning defects and insufficient materials. Therefore, to completely solve the faults of your exhibits, it is often necessary to redesign more perfect parts and remanufacture them. The original manufacturing department has a lot of confidentiality, which cannot be equated with the maintenance of imported equipment. For example, the aircraft maintenance company at the airport has a complete Boeing maintenance manual, and there are very detailed written regulations on the analysis and handling of various faults. I saw the 5 cm thick maintenance manuals they prepared in rows.
We have been working hard to improve the working environment for a long time, and it will take about/kloc-0 to two years to come to an end. Before that, I won't cooperate with you for the time being, unless you agree to make my own independent design exhibits. As for your problem, I can come at the drop of a hat, fight when I come, and stay if I win. There is no guarantee that I can solve the problem. I will arrive as soon as possible. If the problem is solved, I will leave a complete electronic document, indicating the purchasing place of materials and parts and the future countermeasures. I also hope that you can reimburse the transportation expenses to and from the company.
Prepare to provide innovative exhibitions. Please refer to the CD-ROM (delivered * * *) for some basic materials, which will cover a wide range and fields.
I agree with the way that knowledge and know-how were completely free and open during the Cultural Revolution. I think this is the most effective way to promote China's industrial base and scientific and technological level, and it is also the way with the highest utilization rate of social resources, which is urgently needed by China's national conditions.
Some developed countries use national scientific research funds for scientific research projects, and some related information is public, such as the basic information obtained from space exploration, which provides an introduction for anyone in the world to analyze and study. Academicians of the Chinese Academy of Sciences also signed collectively to disclose scientific research materials as much as possible.
The exhibits I provide will fully disclose all design and manufacturing materials, all drawings, the purchase place and price of accessories, processing methods, debugging and modification processes and computer programs. You can provide the audience with CDs and allow them to download these materials. It is up to you to decide whether to charge, whether to allow online publication, whether to allow others to copy the exhibits and sell or display them, whether to apply for invention patents, and whether to license the domestic and foreign popular science exhibition departments to produce and display them with compensation. The audience is welcome to make suggestions for revision. If there is progress after the test, you can improve the original exhibits yourself.
The control part uses analog computers and discrete components as much as possible, followed by electronic circuits composed of general integrated circuits.
For the mechanical part, the cost budget should be made in advance, and the appearance and performance of CNC machining center are good, and the price is bound to be high; Manual processing with electric tools is bound to cost processing, and the working hours are long and irregular, which is suitable for limiting the purchase price. At the same time, it is pointed out that at home and abroad, the market value of devices mainly manufactured by manual processing is higher than that of devices mainly manufactured by machine tools and mass production.
I am generous, allowing anyone to use the basic design materials I independently put forward to make exhibits, without prior economic requirements. Moreover, I won't do the exhibits that cost more than 5,000 yuan without the accumulated funds for selling the exhibits. You are free to choose the manufacturing units and individuals.
The background of this way.
Because I clearly know that the students in various schools are very poor in analog circuit design ability, that is, some students will compile general computer programs. From analog circuit to high frequency circuit, it can be imitated without giving a circuit; Taking medical electronic instruments as an example, imported instruments mainly use discrete components for the front-end part of signal processing, and their performance can not reach the original level according to the original domestic circuits, which is a reflection of their poor understanding of basic electronic circuits.
As long as undergraduates can't debug, so can graduate students. The solution is to adopt ASIC, import the whole machine and integrate the system.