, Analyzing, DFM, and Designing of High Quality and Durage Injection Mold Tool, and avoid unneces that

　　An exception to the need for certification is made in the case of “simple apparatus”. This is the term used for very low power or passive devices that will not cause ignition. Good examples are thermocouples and RTD’s.

　　Avoiding ignition entails minimizing both the available power and the maximum temperatures. Defining the maximum level of available power is complex, but in general terms can be considered as meaning voltage less than 29V and under 300 mA. A simpler view is to say that power must be less than 1.3 W. (Note that much instrumentation requires 24V and can often be designed to draw less than 500 mA; sufficient to meet IS certification in many situations).

　　Six classes define temperature levels. In general, equipment meeting the T4 designation is considered intrinsically safe because temperatures will not exceed 135°C (275°F) (equipment dissipating less than 1.3 W generally stays below this temperature).

　　A wide range of industrial equipment, such as flashlights, cameras, gas detectors and even radios, are available in intrinsically safe forms. In terms of instrumentation the biggest need is for pressure and weight measurement. Temperature measuremen t generally meets the “simple apparatus” rule although temperature transmitters may be needed to send thermocouple signals over longer distances.

　　Typically IS equipment is slightly more expensive than noncertified versions. This results more from obtaining and maintaining the approval than from t he cost of additional or uncommon components. The basic design of an IS barrier uses Zener Diodes to limit voltage, resistors to limit current and a fuse, none of which are expensive.

　　When electrical equipment and instrumentation must be placed in a hazardous environment, IS offers several benefits.

It helps ensure a safe work environment and protects those nearby from explosion risks.

It avoids the cost and bulk of explosion proof enclosures. Additional cost savings accrue from the ability to use standard instrumentation cables.

Maintenance and diagnostic work can be performed without shutting down production and ventilating the work area.

Insurance premiums may be lower as a result of the reduction in risk.

　　No, intrinsically safe apparatus cannot replace these methods in all applications due to the reliance on low power and temperature. Where it is possible i t often leads to significant savings in installation and maintenance costs.

　　No, the performance is the same as the as the non-certified with higher reliability. These devices use the same parts as the non-certified device but have been designed to limit the energy stored and heat generated in case of an internal fault condition.

　　Many industrial, chemical and process environments have significant explosion risks, either due to the presence, actual or possible, of flammable gases and vapors, dusts or fibers. Such environments are termed “hazardous” and it is essential that they are designed so as to eliminate the possibility of igniting the flammable material.

　　Often it’s necessary to incorporate instrumentation of an electrical nature in such environments. When this is unavoidable there are three possible app roaches: put the equipment in an explosion proof enclosure, purge the enclosure with inert gas, or adopt Intrinsic Safety design principles.

　　IS design minimizes power and heat creation. Equipment must be independently certified as IS, and the whole system must be designed to IS standards before entering service. However, adopting IS design can simplify installation, save money, enable maintenance on live equipment, and most importantly, makes for a safer workplace.

　　A.O. Smith innovatively developed a water purifier that can directly produce hot water, so there is no need to wait for hot water to be purified.

　　On March 8, 2018, China Household Appliances and Consumer Electronics Expo (AWE) was grandly opened in Shanghai New International New International Expo Center. As an important exhibitor of this Expo, A.O. Smith’s innovative products made their debut. Among them, this water purifier that can directly produce hot water — — A.O. Smith’s water purification hot drink machine, once unveiled, triggered people inside and outside the industry to stop and understand and find out. This water purification hot drink machine is used with A.O. Smith reverse osmosis water purifier, with a unique patented touch multi-temperature faucet, and hot water with three different temperatures and normal temperature water can be switched at will; Get rid of the long wait for making tea and making milk. 500) this. width = 500′ align =’ center’ hspace = 10vspace = 10Rel =’ nofollow’/> Many patented technologies, reliable and convenient user experience. It is also equipped with a patented zero-steam heating system to avoid burns caused by steam overflowing from the faucet. Child lock function prevents accidental burns caused by children’s misoperation; Food grade 304 stainless steel vacuum insulation liner, safe and energy-saving; One-click emptying old water function, enjoy fresh and clean hot water without worry; The display screen of the fuselage rises 15 degrees, which is convenient to know the running state of the machine in the cabinet when standing.

　　Deciphering the century-old master A.O. Smith, innovative technology is trustworthy.

　　In 1874, A.O. Smith Company was established in Wisconsin, USA. It has a history of 144 years, and it is listed on the new york Stock Exchange (AOS). At present, A.O. Smith’s market value has exceeded $10 billion, and it has been successfully selected as a member of the Standard & Poor’s 500 and among the "American Famous Enterprise Clubs". The innovative idea of "finding a better way through research" has always been the core idea implemented by A.O. Smith. It is precisely because of the persistent pursuit of innovation that A.O. Smith has developed more than 100 patented black technologies, leading technological changes in the industry and being unanimously recognized by the industry. In the future, we will persist in technological innovation to effectively protect consumers’ drinking water safety. 500)this.width=500′ align=’center’ hspace=10 vspace=10 rel=’nofollow’/>

　　An overload or short circuit in a fuse or mini city breaker can lead to Undersupply or Failure of an Entire 24-V dc Power-SUPPLY SYSTEM.

Selectivity Protection using an electronic fuse offers a better propective option in mission-classSSSSS and Applications.

USING Selectivity Protection to Implement NEC Class 2 Control Circuits Requires Just One Large Power Supply Rather than Resorting to Multiple SUPPLIES.

　　Of Plants Adopting and Implementing the Advanced Electrification, Automation, and Digitalization Concepts of Industry 4.0.

　　Shortcomings of Fuses and Miniature Circuit Breakers

　　V Power-supply system. This can down down connected propuction systems, with impacts on a problem, quality, cycle times, and deliver commitments to this.

　　When configuring miniature circuit breakers.

　　be critical.

　　Selective Electronic Circuit Protection with FAULT DETECTION

　　Then, then

　　Selectivity Modules Were Designed Specifically with Power Supplies in Mind.

　　Flexible InRush Current Management During Circuit Load Switch-ONS

　　Then, then

　　In load-dependent sequential connection delays, the next output will be connected as the current of the previous output is les less (fig. 2, agin).

　　Use Case: NEC Class 2 for Apps Requiring Control Circuits with Limited Energy

　　 <100 W rated for each load circuit, these can now be substituted with a single large power supply rated >AS A Result, This Leads to Fewer Components, Less Complexity, Less Wiring Time, and PossiBly A Smaller Control Panel Enclosure, All of Which Can Lead to Potential Cost Saves (FEAG.

　　Other Circuits Continue to be support the interruption. Even PLCS, Which Can only Bridge Power Failures for a Few Milliseconds, Continue to run through problems.

　　Of settings and Diagnostics Possible, Including Those for the NEC Class 2 Outputs.

　　Fast, SIMPLIFIED, and Channel-Specific Diagnostics and Circuit Visibility

　　Programming frameworks.

　　BecauSe only one digital input of the PLC is required.

　　Summary

　　And miniature circuit breakrs to protrical circuits.

　　Circuit Protection Technology with FAST-FAULT Detection.

　　(A) Refrigrator

　　(B) Liner and Door Lining Adsorption Mold

　　Figure 1 The First Stage of HouseHold Appliances and Molds

　　Discharge Machine Tools, ManuoFacturing Capacity of Complex Mold Parts Is Weak. TheReFore, Apperance of Home Appliances on the Market is Basically UnchangedEd, As Shown In Figure 1 Figure 1 Figure 1 Figure 1

　　The second stage is driven by replacement of software and hardware with computer-aided technology and numerical control processing technology to solve complex surface and deep cavity mold development problems. Due to increasing output of home appliances, users have increasingly higher aesthetic needs for appearance of home appliances. Products with curved surfaces and deep cavity designs are favored by consumers. Upgrading demand of home appliance industry has put forward new requirements for home appliance mold technology. Under historical opportunity of reform and opening up, home appliance mold companies have more and more opportunities to communicate with mold developed and regional enterprises. Advanced mold technology and management concepts have been introduced, absorbed and transformed to form core technology competitiveness and management mode of China’s mold enterprises. For example, Haier Mold, in the early days of its establishment, borrowed from Japan and Hong Kong’s mold technology and management experience, through coordinated development with enterprises in Guangdong, Zhejiang and other regions where mold industry developed earlier, it took the lead in forming scale and technological innovation capabilities.

　　A. WASHING MACHINE

　　B. CNC Machine Center

　　C. Deep Cavity Mold

　　Figure 2 Second-Stage Home Appliances and Machine Tools, Deep Cavity Molds

　　Good Role in Demonstration, Promoted Upgrade of Software and Hardware Technology in Entire Mold Industry, As Shown in Figure 2.

　　A. MOLD CAD

　　B. MOLD CAM

　　C. Mored cae

　　FIGURD CAM CAE Technology

　　Which Has Achieved DOMTICIZATION of China’s Main Hime Appliance Products.

　　Use information systems for Enterprise Management, Professional Information Promotion Departments Have Been Established Within Enterprise. Enterprise Management level

　　Same Time, It has said a competition agreement with injection molding equipurers to the application a technologal monopoy in the fire appliances.

　　KEY to Achieving Surpass in China’s Home Appliance Industry.

　　A. High-End Refrigrator with Two-COLOR TECHNOLOGY

　　B. Complete Solution for Two-Color Trim Technology

　　Figure 4 The Third Stage of Home Appliances and Three New Technologies

　　World’s First Brand of Home Appliances, as Shown in Figure 4.

　　for the first time, many technologies have ben upGraded ITERATIVELY in the Next Awards.

　　A. PDM

　　B. SAP

　　C. MES

　　Figure 5 PDM SAP MES Information System

　　, Andustry Management Level has great improved, as Shown in the Figure. 5 Shown.

　　A. Transfer Customized Air Conditioner On-Hook

　　B.3D Printing Air Conditioner on-Hook

　　FIGURE 6 CUSTOM Technology for User Needs

　　On May 4th, a few days ago, foreign VR media RoadtoVR released a survey report on the virtual reality (VR) helmet market in China. According to the report, the retail sales of VR mobile phone boxes reached 1,000 units per day, and the number of distribution channels reached 10,000 units per day.

　　In the past three years, the rise of virtual reality in public discussion can not be ignored. During this period, the mainstream discussions in the United States focused on several major VR manufacturers such as Oculus, Valve/HTC, Sony, Samsung and Google. At the same time, however, the VR market in China outside the ocean can never be ignored. On the other side of the Pacific Ocean, Huaqiang Market in Shenzhen, China is the demand and supply place of vr-platform and software. They are generally high-end office buildings with factories in Dongguan and offices in Nanshan.

　　If you believe in the bright future of VR, you must also believe in people’s ability to access mobile VR. Because smart phone is the only device whose scale, computing power and price are conducive to the promotion of mobile VR. The Shenzhen model is also because of this. Unlike Rift and Vive, they are very expensive. In China electronic market, thanks to the low cost and threshold, mobile VR can be described as a hundred flowers blossom.

　　The survey divides the VR helmet market in China into three categories &mdash; &mdash; Mobile VR, VR integrated machine of PC platform.

　　Mobile VR

　　The so-called mobile VR is a cheap VR mobile phone box &mdash; &mdash; With a pair of plastic lenticular lenses in the box and a mobile phone, you can turn your smartphone into a VR viewer. Of course, they still look higher than Cardboard. The cheapest product of this kind in the domestic market is only 10 dollars (65 yuan RMB, and the price will soon dive). Think about it, with low cost and ubiquitous smart phones, it is easy to catch fire.

　　According to the report, the retail sales of VR mobile phone boxes can reach 1,000 units per day, while the number of distribution channels can reach 10,000 units per day. Most buyers are locals or buyers from South Korea and Japan.

　　When asked what kind of scenes are the most popular, the answer is VR cinema, that is, watching 2D movies in 3D space, such as mobile phone boxes with their own apps, Storm Mirror and VRCase.

　　VR of PC platform

　　The building adjacent to the mobile parts is SEG Building, and there are dazzling electronic equipment retailers on 10 floors of the 72-story building. Here, we found some competing products of Rift and Vive, such as AntVR (Ant Vision) which provides DK2 as a general sample and costs about 280 dollars.

　　However, due to the high threshold of use, the VR of PC platform can be called "high-end" VR, so consumers’ enthusiasm for such helmets is obviously not as high as that of mobile phone boxes, so that investigative reporters think they are more like a novel display, although they are already cheap compared with Oculus Rift and HTC Vive.

　　virtual reality all in one headset

　　After traveling around Huaqiang North, you will find that the secondary reason for the rapid expansion of VR is &mdash; &mdash; Halo effect of non-VR helmet. Why do you say that? These devices are called VR all-in-one. They are essentially stereo media players, that is to say, they use helmets to realize the cinema-like viewing experience. In fact, there is no built-in gyroscope or acceleration sensor &mdash; &mdash; Devices that can’t track head movements are not real VR products. Their characteristics are that they are all equipped with large screens, and they can play content based on Android platform. In addition, such devices also provide USB ports, allowing users to connect USB flash drives and watch their downloaded content. Its price ranges from 120 dollars to 600 dollars.

　　There are many factors contributing to the prevalence of these products. For example, with the high price of high-end equipment such as Sony HMZ and Vuzix iWear (799 US dollars and 500 US dollars respectively), more and more low-cost substitutes are born. But at the same time, more immersive VR all-in-one machines equipped with sensors are being released one after another, such as Storm Devil and LeTV VR helmet.

　　The investigative reporter also bought a set of head-mounted display equipment called Bijela iTheater, which can basically be an all-round tablet computer. This device operates like a computer, with many desktop applications (e-mail, web browser, and even Kindle reader). However, it is small in size and suitable for backpacking, and the price is about $190, which is 40% lighter than GearVR plus mobile phone. Obviously, these devices whose prices and functions are just between PC VR and mobile VR are likely to become popular among young consumers.

　　Oil breakers.

　　Electromagnetic Effects.

　　There are mainly two types of acb, 3 POLES Air Circuit Breaker and 4 POLES Air Circuit Breaker.

　　How do I chooose an Air Circuit Breaker?

　　After all, we have too many technologies in the hands of others. If we don’t put these technologies in our own hands, sooner or later, some enterprises will not escape the "dilemma" of Huawei.

　　Just after the domestic semiconductor field understood this truth, it also began to take action. It can be said that in recent days, the domestic semiconductor field is really active.

　　For example, nearly tens of thousands of enterprises have transferred to the semiconductor field. For example, the Chinese Academy of Sciences has also announced that it will use all its strength to overcome the problems in mask aligner and solve the difficulties that our domestic enterprises may face in the future. For example, our country also plans to achieve a self-sufficiency rate of 70% from the current 30%. For another example, a semiconductor company in Suzhou recently bought a mask aligner for the R&D project of manufacturing high-end photoresist.

　　Another particularly exciting thing is that our country will set up the first "chip university". It is reported that many scientific and technological enterprises in the United Nations, such as Huawei and SMIC, will come together to train more talents of scientific and technological chips for China.

　　From these actions, it is not difficult to see that China’s actions in the domestic semiconductor field are very frequent. And they all have a common goal, which is to master the core technology in their own hands.

　　Just after our domestic semiconductor field ushered in these frequent actions, it also attracted the voice of foreign media.

　　According to relevant information, the British media have expressed their views on various actions in our domestic semiconductor field. It said that if China solved the problem on the chip, the chip would be worthless in the future.

　　In this regard, many people don’t agree with this view, because they think that the chip will not be worthless. After all, we have invested so much in the early stage, how can the chip successfully developed in the end be worthless?

　　But in fact, everyone has misunderstood this statement. Their so-called chips are worthless, not really worthless, but because when we master our own technology and can produce and manufacture chips ourselves, they will have no advantage to monopolize and have no chance to raise the price of chips by virtue of their own technology, which will become what they call "worthless".

　　But then again, it also shows that they are also very optimistic about the semiconductor development in China, otherwise they would not say such a thing.

　　Moreover, Xiaobian himself believes that the day when we overcome the difficulties in the semiconductor field will come sooner or later. Because we attach great importance to this aspect now, and everyone understands the importance of not mastering technology in others’ hands. Then under the combination of the two, the day of overcoming difficulties will come sooner or later.

　　Write it at the end

　　To tell the truth, we all know that it is a long task to overcome the difficulties in the semiconductor field, but this does not mean that we will not do it after a long time. If we don’t do it, we will always be blocked by such a "mountain", but if we do it, this "mountain" blocked in front of our eyes will have a chance to be removed.

　　What do you think of this? Welcome to comment, like and share!

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　　At 8: 00 pm (Beijing time) on Thursday, November 25th, 2021, the long-awaited 25th issue of iCANX Story is about to hit hard. The guest in this issue of Master Story is Professor Bao Minhang from Fudan University, the leader of MEMS in China.

　　He was the first person to engage in the research of MEMS in China. He was conscientious in his studies and published many monographs, enjoying a good reputation in the international MEMS field. For students, he is tireless in teaching others, and the students he has trained have blossomed everywhere in the MEMS field; For learning, he is tireless, constantly accumulating, exploring and innovating.

　　He is a bridge connecting domestic MEMS field with international academic circles, the founder and pioneer of MEMS field in China, and a scholar who has achieved many "firsts".

　　If you are also interested in his experience, please lock in iCANX Story at 8 pm this Thursday to take you to explore the story behind the master.

　　In this interview, you will learn:

　　1. The specific content, principle and significance of the research on film damping;

　　2. Briefly talk about the views on "quantity" and "quality" of thesis writing;

　　3. Review the major events experienced in the development of MEMS;

　　4. Friendship between teachers and friends in international cooperation and communication;

　　5. How to solve scientific research problems innovatively;

　　6. Teaching and research experience of being a teacher and friend with young researchers, etc.

　　Bao Minhang, a professor at Fudan University, is also a professor at Shanghai Institute of Microsystems and Information Technology. After returning to China in 1981, he took the lead in developing micro-mechanical technology and micro-mechanical sensor technology in China. The research work involves pressure sensor, Hall sensor, ISFET, acceleration sensor and silicon micromachined gyroscope. He has visited U. C. Berkcley, National Microelectronics Center of Spain, Microelectronics Institute of National University of Singapore, Royal Melbourne Institute of Technology of Australia and Delft University of the Netherlands. He has written "Micromechanical Transducers" (Elsevier, 2000), "Integrated Sensors" (National Defense Industry Press, 1987) and "English-Chinese Electronic Dictionary" (Shanghai People’s Publishing House, 1974), and has 12 patents and more than 10 scientific and technological achievement awards. In 1988, he was awarded the title of "Young and Middle-aged Expert with Outstanding Contributions" by the Ministry of Personnel. He is currently a member of the Chinese Institute of Electronics, deputy director of the Institute of Sensitive Technology of the Institute of Electronics, and vice chairman of the Shanghai Institute of Sensor Technology. Internationally, he is a senior member of IEEE, a bachelor of British Physics Society and a registered physicist, and a director of the international sensor academic conference. In 2019, he was awarded the medal of "Celebrating the 70th Anniversary of the Founding of People’s Republic of China (PRC)".

　　Dr. Zhang Haixia, Professor eecs, an internationally renowned scholar in the field of micro-nano, the founder of the International University Student iCAN Innovation and Entrepreneurship Competition, the International iCAN Alliance, the founder of iCANX Talks, etc. Professor Zhang Haixia’s research group has been focusing on micro-nano systems and micro-energy technology for a long time, which has had a great influence in academic circles at home and abroad. He has published more than 250 academic papers in important international academic journals, and has 42 invention patents authorized by China and 3 invention patents authorized by the United States, and published 8 monographs and books. As the organizer of Beijing Branch of IEEE NTC, 2013 IEEE NEMS International Conference, 2021 IEEE MEMS International Conference and several international conferences. He served as the editorial board of magazines such as IEEE TNano, JMEMS and MNE of Nature Department. Professor Zhang Haixia has won many awards at home and abroad, including the second prize of national technological invention in 2006, the second prize of teaching achievement in Beijing in 2013, the gold prize of Geneva International Invention Exhibition in 2014, the honorary title of excellent teacher in Beijing and top ten tutor in Peking University in 2017, the May 1st Labor Medal in Beijing and the second prize of national teaching achievement in 2018, the teaching guidance meeting of innovation and entrepreneurship of the Ministry of Education in 2019, and the top 50 scientific and technological women in Forbes in 2020.

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