Currently, when applying new teaching methods, teaching integrated into vocational training institutions to train human resources to meet social needs, teaching according to each vocational skill, it is required to have adequate equipment and models. images for teaching purposes. In the Electrical Vocational Training Program: System of practical exercises, students must perform installation, inspection, operation, maintenance and repair of control systems. To perform this skill before when there was no Electrical Control Model – Automation, teachers Thai Nguyen College of Industry and Trade Having to describe on many different tables, moving from one location to another is time consuming, investing in many different desks is also costly for the school. + Stemming from the fact that school equipment has not been synchronized, some purchased devices still have some limitations: – The teacher’s pedagogical intentions have not been achieved; – There is no versatility for many lessons and many modules; – Transport difficulties; Using the model to introduce and manipulate the test, repair and connection of electrical circuits in the teaching process – High price; + Derived from the actual demand, it is necessary to add equipment to improve the quality of teaching in the condition that the school is still limited in terms of investment capital. In order to create favorable conditions for students to access advanced and modern equipment, suitable to reality and training program, the author has designed and manufactured: “Electrical control model – Automation” with purpose: – Visualization of modern teaching equipment, high technical features, safe to transport for teaching and learning; – Teaching many lessons, many modules that other devices cannot meet; – Exploit creative features of teachers and students, practice skills, approach new technologies; – Reduce investment costs to purchase equipment for the school; After having an idea The Electrical – Automation control model is integrated with equipment mounting on the practice table, applying many subject modules to help the practice process have the same field as the actual production, thereby helping For teachers to describe the operation of each detail, the system is comprehensive and realistic to help students easily think and form skills. Teachers teach on an integrated model that saves space, time, and costs for materials and accessories for students’ practice. Teaching time helps students understand the lesson faster, giving them time to practice connecting devices on the table, the model is enough to be able to work in groups. For teachers: – Explain to students the knowledge of structure and operating principle of applied electrical circuits. – Using the model to introduce and manipulate the test, repair and connection of electrical circuits in the teaching process. – With advanced exercises, teachers create incidents similar to reality for students to think, judge and propose solutions. In addition, teachers can use the device to practice skills for students – students participating in Skill Competitions at all levels and regions. Teachers can use the device to practice skills for students – students participate in Skill Competitions at all levels and regions For students: – Consolidate knowledge of structure and operating principle. – Practice checking, repairing and connecting electrical circuits separately according to each lesson in modules: basic PLC; Advanced PLC; Small-scale programming topics; Sensor engineering; Electric equipment; Electronic instruments; Electrical measurement; Basic electronics; Some technical momentum – With advanced exercises, students think, judge to find out the damage and propose remedial methods. – Through the process of practicing on the model, students can check, repair and connect actual electrical circuits. Electrical control model – Automation is used to teach theory, practice or integrated method for vocational subject modules: Industrial Electronics, Industrial Electrical and basic training part of occupations. Mechanical, Equipment Dynamics at Intermediate and College level. The model is applied with forms of concentrated training, regular training, vocational training for rural workers. Include: The novelty of the initiative New point of the model In order to help learners have access to modern technology, the author has designed an HMI screen display module to help learners implement the screen interface with the system’s operation. The HMI screen has an Ethernet port to connect to the LAN to collect data, display the operating status, warn of errors, command control of production machines, machine tools through PLC. Thanks to the HMI sensor screen interface, it is possible to simulate the working process of the system in a realistic way. At the same time, the operator can easily monitor and detect errors when problems occur and control the working system remotely through the network connection of the HMI screen. On the model, the author builds the application of PLC in mixing control controlled through the HMI sensor screen: the materials contained in tanks A and B are passed through the mixing tank by PLC programming. The PLC control device S7-200 has been upgraded to replace the PLC S7-1200 with more outstanding features such as: The S7-1200’s compact design, low cost, and powerful instruction set make the solution perfect for the application used with the S7-1200. The S7-1200 provides a PROFINET port, supporting Ethernet and TCP/IP standards. Figure 1: Difference between PLC S7-200 and PLC S7-1200 siemens Figure 2. Mixing model simulation interface using HMI . display Creative point The model mentioned that the active and active learning method of students contributes to the realization of the goal of modern education to “Train students to be dynamic, creative and independent people, to modern scientific and technical knowledge”. The model promotes activeness in students’ learning activities, puts knowledge into practice, and maximizes learners’ initiative. Apply practical skills. Up to now, teaching models usually only serve each separate module, now we have combined many modules for teaching, saving a lot of money on investment in facilities as well as time of teachers and students. born. Especially in this model, the author has incorporated intelligent control devices into teaching to help learners access the development of science and technology in daily life to serve daily life and work. his job. The initiative is worth 161,500,000 VND The beneficial value for the initiative Equipment on the market: 220,000,000 VND The author bought and assembled in 01 model by himself: VND 58,500,000 Value of benefit: 161,500,000 VND The initiative has been applied: The model after participating in the competition of do-it-yourself teaching equipment at School, Provincial and National levels in 2019 has been applied in the teaching process at schools since 2019. February 2021 has improved and continued to apply in the teaching process at the Faculty of Electrical and Automation, Thai Nguyen College of Industry and Trade, now the College of Technology and Commerce.

People then talked about strategizing against rats, setting extremely sophisticated traps, or fortifying houses against small but annoying enemies. Six months have passed, the number of rats has once again increased sharply, despite thousands of tons of rat poison used, not to mention a terrible flood that swept across the east coast of the country. Rats are no longer an enemy to be eradicated, they seem to have become annoying black fluffy clouds that move everywhere where people have to learn to live together, according to the report. Guardian . Nightmare The nightmare that Australia is experiencing is known as the “rat epidemic”, caused by huge populations of house mice. The house mouse was brought to Australia by Europeans in 1788. Since then, rat epidemics have occurred several times in Australia when conditions are favorable, with increasing frequency. This year, the situation became so serious that the New South Wales state government had to announce an emergency relief package of 50 million USD for people to fight the rat epidemic, including money for rat poison research, drug support. mouse and rat traps up to $1,000 per small business and $500 per household. Dead rat in a farmer’s warehouse in Walgett. Photo: Guardian. But for many people, the support is nothing compared to the damage the rats cause. “We were away for four weeks and had relatives check the house every day. There was a period of about four days when no one came to look, and in those four days, they were all over the house,” said Louise McCabe, resident in the town of Tallimba, said. When relatives were asked to open the door by McCabe, thousands of rats were inside. “They chewed up the new carpet, they ate the wooden floor. The oven they broke. They ate the insulation inside the dishwasher,” McCabe said. McCabe later discovered rats nesting inside pillows on lounge chairs, crawling into kitchen cabinets, destroying electrical circuits. Damages totaled up to $30,000. The climax was when the woman put the clothes soaked in rat urine into the washing machine. When she returned, she discovered a dead rat had swollen inside the glass. Meanwhile, a farmer named Ben Storer living in Walgett, said that 800 hectares of his sorghum has been destroyed by the herd, causing damage up to 200,000 USD. Rats attack every part of Storer’s farm, from the grain barn and the mill to the swimming pool’s filter pipe. At the height of the rat epidemic, thousands of dead rats were found every time Mr. Storer used a grinder to grind the grain he harvested. Baiting is the only measure that can be deployed on a large scale to control rat populations. As a result, in the worst-affected towns, the smell of urine and dead rats was overwhelming. Local residents described the smell of rotting rats as “unbearable”. “With poison, we can kill 100,000 rats a night. But the next morning, another 200,000 will come back,” Mr. Storer said. “No one understands the rat epidemic until they’ve experienced it. No one understands the extreme stench, vandalized furniture. Rats eat all the insulation in the air conditioning system, eat the wires on the roof, corrode parts of the circuit board,” said John Southon, principal of Trundle Central High School. Winter hope While local residents seem to have given up on the fight against rats, New South Wales authorities have stepped in. Experts say they have successfully developed a rat poison that can turn the tide of the current war. A new rat poison using a super toxic chemical called bromadiolone is being approved for emergency use by the New South Wales government. However, scientists warn the drug can be dangerous for native animals that eat the dead rat. Steven Henery, broaching expert with the Australian Agency for Science and Industrial Research, said the coming winter would be an opportunity for humans to put an end to the current rat epidemic. “My hope is that winter will slow down the birth rate of mice, and that only a very small number of mice will survive,” said Henery. One of the real concerns, Mr. Henery warned, is that the rat population has a high winter survival rate, and if the weather conditions are favorable the following spring, they will start to thrive again. Farmers burn fields after harvesting to destroy the rat’s food source. Photo: Guardian. “In August, farmers need to go out to their fields, look for signs of infestation. If they find any, then they will have to kill them before the breeding season. property arrives,” Mr. Henry said. Any human rat eradication strategy will only be able to reduce the rat population to a certain extent. Experts say that to be able to overcome the rat epidemic, humans will have to wait for the help of natural phenomena that are really terrible for mice. “The very large number of individuals interacting with each other increases the risk of disease transmission. When this phenomenon occurs at the same time they run out of food, they will fall ill and start eating each other, eating the animals. young. That’s when their whole growth system collapses,” said Mr. Henery. But until that day comes, people will have to keep setting traps, laying baits, and praying the weather will turn bitter cold. “I can only pray for freezing cold. That’s all I can do right now,” McCabe said.

Before this review, please also say that I am not a fan of the built-in amps. Cramming an entire preamp, poweramp, and even a digital source into one box to me has never seemed the smartest technical choice. Clearly, such a composite design not only significantly increases the risk of electromechanical interactions between three different circuits, but the power supply also faces the ability to provide independent stable power to multiple functional boards. . However, after a period of experience with Goldmund Telos 590 NextGen II, a 125W Class A / B amplifier, equipped with 384K / 32-bit DAC decoder, I and a few colleagues had to change their perception. about the performance capabilities of the integrated amplifier. Technical structure On the outside, the Telos 590 NextGen II looks identical to its predecessor, NextGen I, which was once highly regarded. It’s a rectangular box made of solid, harmonious, rectangular steel, weighing about 20kg, with an LED display that serves as a center console in the center of the front. Above the screen is a glossy gold Goldmund logo placed solemnly in the center. The display correctly shows 3 indicators: on the left side is the selected number of inputs (from “1” to “8” and all stops in the middle); on the right is the volume level (from “00” to “99”); and the center indicates the device’s power status (a pair of horizontal bars light up confirming that the source is turned on and the built-in device is ready to play music). There are metal knobs on either side of the LED screen (two buttons in total). The left button will change the input and the right button will change the volume. The knobs when turned quite lightly and show the next drag when rotating. While the input and volume controls can be done directly via the front panel controls, Goldmund still features a compact metal remote control to meet the demands of lazy audiophiles. moved on. This remote also lets you perform other functions through the buttons. In addition to changing the input and volume levels, it allows you to mute the pre-amp (also turn off the volume lights on the right side of the LED panel) or put the unit in Standby mode (this also dimming the whole monitor sets). On the back, the Telos 590 NextGen II has 8 inputs and a complete set of loudspeaker wiring stakes without criticism. If you are an audio enthusiast using subwoofer, you will be out of luck with the Telos 590 NextGen II, because the manufacturer wants this integrated amplifier to be a “purest” component for the sound system. stereo and traditional two-channel music lover. The amplifier has 3 digital inputs including a USB 2.0 port, a TosLink and a 75 ohm SPDIF coaxial and 5 pairs of analog RCA. The machine is also integrated 32-bit DAC, with the ability to receive and decode high-resolution digital music sources in a variety of formats, including 32bit / 384kHz PCM and DSD 128. The fin-shaped heatsinks are designed on either side of the chassis. Unlike Krell, which often makes “razor sharp”, the radiator of Telos 590 Nextgen II is smooth enough to touch without causing injury and although in fact this amplifier has a fairly large capacity, but they are still not too hot. . It’s all thanks to Goldmund recently developing a sophisticated cooling system. “The company has created a mechanical link between the power MOSFETs and the heatsink to make heat dissipation more efficient. This mechanical refinement contributes to flexibility, providing extreme dynamics and speed. In fact, the Telos 590 NextGen II has become refined, comfortable and smooth with dense colors and details No one would have thought that a mechanical device, independent of the actual circuit. , it can make such a profound difference “. As many people know, Goldmund’s electronics have long been praised for their power, speed, and resolution. In addition, they are prized for their gentle, mellow tonal balance. For listeners looking for detail delivered with lifelike speed and impact, Goldmund’s products have long competed with the best. However, for listeners looking for warm, natural sounds and 3-dimensional space, they have not yet satisfied much. For example, the Telos 590 NextGen a few years ago had been well-praised for its very high resolution, characteristic of Goldmund, but still had slight flaws for still being cold. But the new Nextgen II version of this integrated amplifier has changed completely when showing a different face. Of course, Goldmund also claims improvements in the circuitry of the Telos 590 Nextgen II, including reduction of intermodulation distortion (especially important for woofer control), improved linearity in all The amplification stages and greatly reduces time distortion. The company also says on its website that the key to high-fidelity audio is achieving the right balance between power and control. Judging by the results, Goldmund definitely achieved his goal with the Telos 590 Nextgen II. Sound quality assessment To hear what Goldmund advertised, all you have to do is find a live recording that features a performer you often listen to and love. In this try we chose the great blues guitarist BB King and the popular album Live at the Regal. I enjoyed the King band’s performance (all smart uniformed trumpets swing their instruments perfectly between breaks, like the drummers swing their baton) , or the beautiful melody of King’s guitar, Lucille, and the expressive way he plays it and sings. Through Goldmund, Lucille is “inflated” into three dimensions, her voice is filled and “deeper”, comes close to the male voice and feels miraculously revived. And not only did Lucille benefit from the NextGen II “treatment”, but so did King’s silky, vaguely high-pitched voice like Nat Cole, creating a sweet contrast to his historic guitar playing style. his. Nextgen II not only brought Lucille and King to life as if they were singing live, but it also had the same effect on his wonderful acoustic rhythm. We can almost see them play and rotate simultaneously on stage from left to right. It can be said that NextGen II is still a champion when it comes to detail reproduction – both in music, performance and technique. If you are a simple audiophile “cannot live” without hearing a single chip (made of thin copper pieces or from laminated bamboo, fixed at an upper open end in the flat surface of a trumpet or tube) flute) of the saxophone fluttering gently at the end of a long note, like Branford Marsalis’s tenor saxo in Harry’s “A Nightingale Sang in Berkeley Square”, the Telos 590 NextGen II is sure will be your first choice. What sets the Telos 590 apart from the original Telos 590 (and previous generations of Goldmund) is that in addition to the instrumental and performance details, NextGen II also offers the colors of that sax and tuba. almost perfect. Once you combine ultra-high resolution with incredibly natural tone, pitch, intensity, and duration, you get what everyone calls completeness – along with neutral, one of the two. An indispensable element of the equipment used to recreate the real stage. And the Telos 590 NextGen II has such a finish, at an excellent level. Conclude
Goldmund’s Goldmund Telos 590 NextGen II excels in low-end and strength (but in some respects, mid- and high-range still). And it did so without great reservations about soundstage size, dynamics and impact, detail retrieval and noise levels. You can hear all of these advantages in Goldmund’s built-in amps, especially in the bottom octave, where it has such a power, solidity, and tonal density that I would not have dared to think of. As you add the sweetness and friendliness of the sakura to the mids and highs to this incredibly solid bass and power base, you get neutral tones for tonal and fidelity great that every music lover craves.

An auto warranty is a must-have when buying a car, demonstrating the manufacturer’s responsibility to the customer, making sure the product is sold at its best and increasing the buyer’s confidence. Currently, some car manufacturers confirm the quality of the car through warranty. However, the car owner should note that for some cases such as adding some accessories and toys on the car, it is possible that the warranty will be denied. Refusal of car warranty “degree” Warranty between car manufacturers may vary, but there are some common features regarding the eligibility of the warranty as well as disclaimer. In particular, many car owners are also confused that they will be denied the warranty. Mr. Nguyen Hoang Quan shared: “I need advice on installing options such as DVD, subwoofer, reverse sensor, camera … In general, it is related to the electrical part and works at the outside garage that is not managed by the car manufacturer . But when buying a car, the sales staff told me that it will not be covered by the warranty according to the regulations. ” Issues such as glazing and floor coverings do not affect the vehicle’s warranty. Photo: THY NHUNG Accordingly, some people believe that this is just a “trick” for sales of employees, while mounting toys outside will not affect the car warranty. However, there are also some opinions that car owners should consider and ask the car manufacturer before adding the interior. “I think that before doing it, I also advise some brands, instead of installing it outside, the owner can buy accessories to bring into the installation company and still be warranted. Most of the electric damage is due to the addition of toys (electrical parts) without reference to the design diagram of the circuit according to the vehicle “- said Mr. Ngo Quynh, a car owner. According to a survey of PV, although according to regulations of some car manufacturers, the installation of toys or not depends on the toy involved, affecting which parts of the vehicle. For example, furniture such as screens, speakers or cameras … affecting the electrical system may be a possibility that the car company will refuse the warranty. However, not all car manufacturers “impose” this regulation. Each car company rules differently The installation of accessories can cost the cheapest about 200,000 VND and the highest up to tens of millions VND. Having lost a large amount of cost to “level” the car, in addition to not being warranted, the owner should also note. Mr. Chien, Manager of Muoi Hung Auto store, said that it depends on the position that the owner of the car can replace or renew. For example, cars such as Audi, Lexus, BMW, … luxury cars, technically not hard-skilled will be susceptible to errors, so the firms refusing to warranty are correct. For large interiors, more skilled engineers are likely to make no impact. “Ordinary cars are not a problem, but when buying a car, the sales staff will also advise customers” – Mr. Chien said. According to Mr. Chien, related to the screen, lights, sound, the use of electric wires is likely to affect. It’s okay to have parts like flooring, leather or glazed. Because in the process of doing, there are errors that the technicians do not notice, affecting the safety of the vehicle, this problem cannot be confirmed. Universal models with normal structure and not as detailed as luxury cars will be more difficult to handle. Regarding this issue, the director of a car dealership in Ho Chi Minh City also shared: “This is not a strict regulation of car manufacturers, but this regulation is intended to ensure safety for owners, especially when traveling on the road ”. In some cases, warranty may be denied – In cases where customers take the car for maintenance and care at other facilities, not with the company’s warranty center. If there is any damage or damage, the car company is not responsible for handling. – Products and liquids such as oils, greases, battery electrolytes, radiator coolants, air conditioner refrigerants, power steering fluids and other items not approved by the manufacturer Export specified. Any damage caused by or related to the above products is not covered under warranty. – Damage caused by participating in racing, parade or any competition, if damage occurs, the automaker is not responsible. – Installation and replacement by non-genuine parts causing damage to the vehicle. Such as coolant, raw material, lubricant is not suitable for vehicle. – Using non-genuine parts or using the wrong fuel, lubricant or liquid not recommended by the manufacturer. – When modifying or assembling or dismantling equipment on the vehicle, affecting the function and operation of the vehicle.