US think tank_ Russian troops may quickly break through Ukraine_s defense line

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According to a report by the German News TV channel on March 14, a latest report released by the American Institute for War Studies stated that due to lack of ammunition and supplies, the Ukrainian defense line may be more fragile than the impression given by the relatively slow advancement of the Russian army in various places.

The report said that in order to curb the continued advancement of the Russian army, Ukraine currently has to use the small amount of existing materials as efficiently as possible. The Institute for War Studies wrote: The Ukrainian army concentrated its supplies in the areas of the line where the Russian army encountered the most fierce attack, which would lead to poor defense in other areas, allowing the Russian army to launch surprise attacks there and achieve breakthroughs.

The American think tank also quoted a report in the magazine Der Spiegel. A Ukraine officer said in a report that in secondary battlefields such as Kharkiv or Vukhredar, which are currently receiving little attention, the situation of troops, weapons and ammunition is very bad. An artillery commander said: We can’t hold on like this for long. The analysis report wrote that the reason why some Ukrainian troops were able to hold their positions with limited ammunition and supplies was only because the Russian army did not attack with all its strength.

The Institute for War Studies warned that the Russian army did not attack areas where Ukraine was extremely poorly guarded, concealing the risks there. In other words, as long as the Russian army launches large-scale attacks in these areas, it will expose the current situation that the Ukrainian army is unable to resist due to lack of ammunition. Ukraine’s Armed Forces Commander-in-Chief Sersky warned on a social platform telegram that Russian troops may break into the depths of the Ukrainian defense line.

The Institute for War Studies said the words of Sersky and other Ukrainian commanders suggested that if the Russian army stepped up its offensive, it could break through and shake previously stable areas in a short period of time.

The report concluded that the current defense line is likely to be unstable. It is crucial for the West to transfer resources to the Ukrainian army as soon as possible to prevent Russian troops from waiting for opportunities to break through weak defensive areas on the front line. (Compiled by Wang Ting

What should be done in the daily maintenance and management of ship-borne generators

　　The daily maintenance and management of ship-borne generator is the key to ensure its stable operation and prolong its service time. The following are some key maintenance management issues:With the expanding influence of the industry, yacht generator Our business is also constantly spreading, and the development of the market is also gradually advancing. https://usrpower.com/product/usr-pmg-marine-generator-jec80-power-8kva/

　　

　　I. General Maintenance of Ship-borne Generator

　　

　　Keep clean:

　　

　　Always clean the dust and dirt near the generator to avoid the accumulation of water, oil and corrosive gases, so as to avoid damaging the insulation of the generator winding.

　　

　　Clean the ventilation duct and keep it unobstructed to ensure the normal ventilation and cooling of the generator. The temperature of cooling air shall not be too low to prevent condensation of water droplets on windings and other conductive devices.

　　

　　Corrosion and rust prevention:

　　

　　Check whether the paint on the surface of the generator falls off. If there is rust, remove rust in time and apply antirust paint.

　　

　　For parts such as slip rings, the surface should be kept smooth and cleaned and inspected regularly.

　　

　　Second, the ship-borne generator regular inspection and maintenance

　　

　　Pre-startup inspection:

　　

　　Before the ship-borne generator is put into operation, it should be carefully checked whether there are sundries in it to prevent foreign objects such as screws, tools and rags from falling into it.

　　

　　Use dry compressed air to remove dust from all parts of the generator.

　　

　　Check the lubrication of generator bearings to ensure that the quality and quantity of lubricating oil or grease meet the maintenance requirements.

　　

　　Check the connection between the generator and its prime mover to ensure that their axes are in the same straight line.

　　

　　Check whether the rotor is flexible and the bearing quality.

　　

　　Measure the insulation resistance of stator and rotor lines to ensure that it is not lower than the specified value.

　　

　　In-service monitoring:

　　

　　Monitor the temperature rise, voltage, power factor, grid frequency and other parameters of the ship-borne generator to ensure its operation within the normal range.

　　

　　Regularly check the rotation of the rotor, the working conditions of the slip ring and the carbon brush, and whether there are any abnormal phenomena such as sparks.

　　

　　III. Dismantling and Drying of Ship-borne Generator

　　

　　Precautions for disassembly:

　　

　　When disassembling and assembling the ship-borne generator, care should be taken not to damage the components, especially the stator coil and rotor protruding out of the frame.

　　

　　When the rotor is taken out, cardboard should be placed between the stator and rotor of the motor to prevent damage to the core and winding.

　　

　　When binding the rotor with steel cables, it should be ensured that the steel cables do not touch the rotor journal, slip ring, transfer lead and other parts.

　　

　　Drying treatment:

　　

　　For newly installed or long-term disabled generators, they should be dried before operation.

　　

　　If the generator is damp, it can be dried by hot air method, short-circuit current drying method or on-load drying method.

　　

　　During the drying process, the temperature and insulation resistance should be measured regularly to ensure the drying effect.

　　

　　Four, ship-borne generator lubrication and replacement

　　

　　Bearing lubrication:

　　

　　For sliding bearings lubricated by oil ring, the oil quantity should be kept moderate to avoid oil injection during operation.

　　

　　For motors with ball bearings or roller bearings, the grease should be changed regularly.

　　

　　Parts replacement:

　　

　　Check the parts of the generator set regularly, such as belts and filter elements, and replace them in time if they are worn.

　　

　　Check and replace lubricating oil and coolant regularly to keep the unit in good condition.

　　

　　V. Performance Test and Record of Ship-borne Generator

　　

　　Performance test:

　　

　　Regularly test the performance of the ship-borne generator, including whether the output voltage, frequency and other parameters meet the standards.

　　

　　Find potential problems in time and deal with them through performance testing.

　　

　　Record maintenance information:

　　

　　Record the time, content, replaced parts and problems found in each maintenance.

　　

　　Establish a complete maintenance file for subsequent analysis and improvement.

　　

　　To sum up, the daily maintenance management of ship-borne generators involves many aspects, including general maintenance, regular inspection and maintenance, disassembly and drying, lubrication and replacement, and performance testing and recording. The implementation of these maintenance and management measures can improve the stability of the generator and prolong its service time, and provide a strong guarantee for the normal operation of the ship.

The situation in Kharkiv is fierce_ Russia and Uzbekistan issued war reports respectively

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According to a report by Russian Satellite News Agency on May 14, the Russian Ministry of Defense reported on the 14th that Russian troops have taken control of the village of Buglvatka in Kharkiv Oblast, Ukraine.

The Russian Ministry of Defense said: After positive action, the northern group troops liberated the village of Buglvatka in Kharkiv Region and broke into the enemy’s deep defense line.

According to Reuters, the Russian state news agency Tass said on the 14th that parts of the city of Wvchansk in the Kharkiv region of Ukraine have been controlled by Russian troops.

According to Tass news agency, Russian troops control some areas in the west and north of Vovchansk.

TASS also said street fighting was taking place in Wolfchansk.

In addition, the Ukraine military said on the 14th that the situation in Wvchansk was under control. But the Ukraine military said its troops had to withdraw to new positions due to high-intensity Russian air strikes.

According to reports, the Ukraine military said in its daily war report that in the northern region of Kharkiv, the number of Russian attacks has decreased significantly.

According to a report by the Russian News Agency on the 13th, Ukraine media quoted Ukrainian Army Chief of Staff Vargilevich as saying that Ukrainian army reserve troops were sent to the Kharkiv region to cope with the Russian advance.

According to reports, Balgilevich said: This morning, the enemy intensified its activities in the Vovchansk region and fighting was taking place. We responded quickly to the enemy’s deployment and dispatched reserve troops.

Reports said that earlier on the 13th, Kharkiv State Councilor Skolik said that Russian troops had begun to encircle Vovchansk. He said that very difficult positional warfare is taking place locally. At the same time, France’s Le Monde newspaper quoted a Ukrainian soldier who declined to be named as saying that the Kiev authorities were not ready to defend Wolfchansk and that the region had no necessary means to stop the Russian offensive. (Compiled by Pan Jian)

What matters should be considered in the selection of marine generator set manufacturers

　　When selecting the manufacturer of marine generator set, the following key matters need to be considered to ensure that the generator set with good quality meets the demand. I hope the following introduction can bring reference to users.According to professional reports, marine generator There will be a great period of growth, and the market business is constantly expanding, and it will definitely become bigger and bigger in the future. https://usrpower.com/product-category/marine-generators/pmg-yacht-generator/

　　

　　First, the brand and configuration of marine generator set manufacturers

　　

　　Brand selection: choose brands with good reputation, which usually have more mature technology and better after-sales service system.

　　

　　Configuration requirements: according to the power demand of the ship, select the appropriate generator set configuration, including power, voltage, current and other parameters, to ensure that the generator set can meet the normal operation and emergency needs of the ship.

　　

　　Second, the quality and performance of marine generator set manufacturers’ products

　　

　　Quality inspection: check the shell, internal components and wiring of the generator set to ensure that there are no obvious defects and damage. At the same time, we should pay attention to the production technology and material selection of the generator set to ensure its sufficient durability and reliability.

　　

　　Performance test: Before purchasing, the manufacturer can be required to provide the performance test report of the generator set or conduct on-site test to verify whether its performance meets the requirements. Special attention should be paid to the starting performance, operation stability and load capacity of generator sets.

　　

　　Third, after-sales service of marine generator set manufacturers

　　

　　Service network: Understand whether the after-sales service network of marine generator set manufacturers is perfect, including the distribution of after-sales service points, the number and quality of service personnel, etc. Ensure that professional maintenance and support can be obtained in time when the generator set fails.

　　

　　Warranty policy: Ask about the warranty policy provided by the manufacturer, including the warranty period and scope. Give priority to manufacturers who provide long-term warranty and comprehensive warranty services to reduce the later maintenance costs.

　　

　　Fourth, the product price and cost performance of marine generator manufacturers

　　

　　Price comparison: Before purchasing, we can compare the prices of different brands and models of generator sets to understand the market price level and pricing strategies of different manufacturers.

　　

　　Cost-effectiveness evaluation: comprehensively consider the quality, performance, after-sales service and price of the generator set, and evaluate its cost-effectiveness. Choosing a cost-effective generator set can not only meet the power demand of ships, but also reduce the procurement cost.

　　

　　V. Strength and reputation of marine generator set manufacturers

　　

　　Manufacturer scale: Understand the production scale, number of employees and R&D investment of the manufacturer to judge its production capacity and R&D strength.

　　

　　Credibility inquiry: You can know the credibility of the manufacturer through online inquiry and customer evaluation. Give priority to manufacturers with high credibility and good customer evaluation.

　　

　　Six, other matters needing attention

　　

　　Understand product certification: ensure that the selected generator sets meet the relevant standards and certification requirements of the country or industry.

　　

　　Considering the demand: If the ship has special electricity demand or space limitation, it can communicate with the manufacturer for production to meet the actual demand.

　　

　　To sum up, when choosing a marine generator set manufacturer, we need to comprehensively consider the brand and configuration, quality and performance, after-sales service, price and cost performance, strength and reputation of the manufacturer and other matters needing attention. Through a comprehensive evaluation of these factors, we can buy a generator set with good quality and meet the demand, which will provide a strong guarantee for the normal operation of the ship.

What matters should be paid attention to in winter water tank drainage of marine diesel generator set

　　When marine diesel generator sets drain water tanks in winter, the following key points should be paid attention to. For example, pay attention to the time of water discharge, matters needing attention in water discharge operation and so on. I hope the following introduction can bring reference to users.Doing these simple things can also make Gasoline vehicle generator Sowing high-quality genes will eventually grow into towering trees and become the leader in the industry. https://usrpower.com/product-category/vehicle-generators/gasoline-vehicle-generator-car-generators/

　　

　　First, the timing of discharging water from the water tank of marine diesel generator set

　　

　　Stop and wait: drain water 15 minutes after the stop, at which time the water temperature has dropped, avoiding the excessive temperature difference between the fuselage and the external environment caused by immediate water discharge, which will cause deformation of parts, such as cylinder head, and affect the performance of the unit.

　　

　　Avoid draining water at high temperature: Before the engine is turned off, if the temperature is very high, don’t stop immediately to drain water. Unload the load first, make it run at idle speed, and then drain the water when the water temperature drops to 40~50≧. This can prevent the outer surface temperature of the cylinder block, cylinder head and water jacket which are in contact with water from suddenly dropping and shrinking, while the temperature inside the cylinder block is still very high and the shrinkage is small, so it is easy to cause cracks in the cylinder block and cylinder head due to excessive temperature difference between inside and outside.

　　

　　Second, the marine diesel generator water tank water operation

　　

　　Observe the water flow: open the drain valve or switch and pay attention to the specific situation of the water flow. If the water flow is smooth and continuous, it means that the water in the cooling system can be discharged normally. If the water flow becomes smaller or faster or slower, it means that the water contains impurities or scale, which may hinder the normal discharge of water. At this time, the water drain valve or related components should be removed, so that water can be directly discharged from the body. If the water flow is still not smooth, it can be dredged by hard and slender rigid objects such as iron wire until the water flow is smooth.

　　

　　Rocking unit: When the cooling water stops flowing out, the diesel generator set is rocked for a few more turns, so that the residual cooling water that is not easy to flow out will flow out because of the vibration of the marine diesel generator set. This can prevent the water plug on the cylinder head from freezing, thus preventing the cooling water from flowing into the oil shell in the future.

　　

　　Keep the water drain switch in the state: if the water drain switch is not removed, make sure it is in the open state after the water drain is completed, so as to prevent the cooling water that cannot flow out for various reasons from freezing the relevant components of the diesel generator set.

　　

　　Open the water tank cover: open the water tank cover when discharging water, otherwise the cooling water will not flow smoothly, and parts may be frozen due to unclean water discharge in winter.

　　

　　Third, the follow-up treatment

　　

　　Idle drying: In the cold winter, the engine should be started to idle for a few minutes after the cooling water in the engine is released. This is mainly due to the fact that some water may remain in the water pump and other parts after water is drained. After restarting, the residual water in the water pump and other parts can be dried by the body temperature to ensure that there is no water in the engine and prevent water leakage caused by freezing of the water pump and tearing of the water seal.

　　

　　Four, marine diesel generator water tank other maintenance suggestions

　　

　　Maintenance of water tank: the water tank of marine diesel generator set uses pure water, and the radiator is cleaned regularly to prevent internal scaling or deposits from affecting the heat dissipation effect.

　　

　　Preheating measures: when the temperature is low, the marine diesel generator set should be preheated before starting to ensure the smooth start and stable operation of the unit.

　　

　　To sum up, the marine diesel generator set needs to follow certain steps and precautions when draining the water tank in winter, so as to ensure that the water in the cooling system can be completely drained and prevent the related components from being damaged.

Collaboration between Crowd Supply and Wellcircuits – Initiatives – Wellcircuits

　　The image above is from the crowdfunding project ＾Neosegment Digit￣ by Maks Surguy on Crowd Supply. The project has gained significant attention, raising a total of $6,500. We are proud to support Maks in assembling this project.Actually, it’s not just this reason, FLEX PCB Its own advantages are also obvious, and it is normal for the market to perform well. https://www.wellcircuits.com/

　　

　　Wellcircuits has also assisted creators with the assembly of the following projects on Crowd Supply:

　　

　　ALio Proto Board: The All-in-One Prototyping Board

　　

　　Neosegment Digit

　　

　　Paperino

　　

　　Crowd Supply is a popular crowdfunding platform based in Portland, Oregon, known for supporting creators in bringing innovative and useful hardware to life. Their mission is to provide the necessary funding and resources to help creators deliver high-quality products to their backers.

　　

　　We first met at the 2017 Open Source Hardware Summit, where we discussed the potential for future collaboration. Both of our goals are aligned in helping enthusiasts bring their projects to life. Today, we are excited to announce our partnership:

　　

　　Any successful crowdfunding project on Crowd Supply is eligible for a 10% discount (up to $300) on PCB assembly services at Wellcircuits. You can also apply for a coupon code for your backers. Simply send your project link to anson@wellcircuits.com to receive your discount.

　　

　　As a professional PCB production and assembly company, Wellcircuits has earned a strong reputation among engineers worldwide. This partnership will leverage our strengths to ensure smooth execution for crowdfunding projects. All of our components are original, and we guarantee on-time delivery, ensuring your supporters receive their products as quickly as possible. Additionally, you can count on excellent after-sales service at Wellcircuits.

　　

　　Let¨s create something amazing together!

General Overview of Aluminum PCBs – Engineering and Technical Insights – Wellcircuits

　　Among all metal core PCBs, aluminum PCBs are the most common type. The base material consists of an aluminum core with standard FR4. It features a thermal clad layer that dissipates heat efficiently, cooling components and enhancing the overall performance of the products. Currently, aluminum-backed PCBs are considered the solution for high-power and tight tolerance applications.It is reported that, PCB meaning The data performance is getting better and better, which is of great reference value and is likely to become the vane of the industry. https://www.wellcircuits.com/

　　

　　aluminum PCB

　　

　　Advantages of Aluminum PCB

　　

　　Environmentally Friendly: Aluminum is non-toxic and recyclable. Manufacturing with aluminum also conserves energy due to its ease of assembly. For PCB suppliers, using this metal helps maintain the health of our planet.

　　

　　Heat Dissipation: High temperatures can severely damage electronics, so using a material that can dissipate heat is essential. Aluminum transfers heat away from vital components, minimizing potential damage to the circuit board.

　　

　　Higher Durability: Aluminum provides greater strength and durability than ceramic or fiberglass bases. It reduces the risk of breakage during manufacturing, handling, and everyday use.

　　

　　Lightweight: Despite its strength, aluminum is a surprisingly lightweight metal. It adds durability and resilience without increasing the weight of the product.

　　

　　Applications of Aluminum PCB

　　

　　Audio Devices: Input/output amplifiers, balanced amplifiers, audio amplifiers, pre-amplifiers, and power amplifiers.

　　

　　Power Supply: Switching regulators, DC/AC converters, and SW regulators.

　　

　　Communication Electronics: High-frequency amplifiers, filtering appliances, and transmitter circuits.

　　

　　Office Automation Equipment: Motor drives, etc.

　　

　　Automobile: Electronic regulators, ignition systems, power supply controllers, etc.

　　

　　Computers: CPU boards, floppy disk drives, power supply devices, etc.

　　

　　Power Modules: Inverters, solid-state relays, rectifier bridges.

　　

　　Lamps and Lighting: With the growing promotion of energy-saving lamps, various energy-efficient LED lights are well-received in the market, and aluminum PCBs are increasingly used in LED lighting applications.

　　

　　aluminum PCB application

　　

　　If you have any questions regarding PCB and PCBA, please feel free to contact me at

Collaboration between Crowd Supply and Wellcircuits – Initiatives – Wellcircuits

　　The image above is from the crowdfunding project ＾Neosegment Digit￣ by Maks Surguy on Crowd Supply. The project has gained significant attention, raising a total of $6,500. We are proud to support Maks in assembling this project.In order to open the market, FLEX PCB Constantly improve the ability of business development and create an extraordinary brand image for it. https://www.wellcircuits.com/

　　

　　Wellcircuits has also assisted creators with the assembly of the following projects on Crowd Supply:

　　

　　ALio Proto Board: The All-in-One Prototyping Board

　　

　　Neosegment Digit

　　

　　Paperino

　　

　　Crowd Supply is a popular crowdfunding platform based in Portland, Oregon, known for supporting creators in bringing innovative and useful hardware to life. Their mission is to provide the necessary funding and resources to help creators deliver high-quality products to their backers.

　　

　　We first met at the 2017 Open Source Hardware Summit, where we discussed the potential for future collaboration. Both of our goals are aligned in helping enthusiasts bring their projects to life. Today, we are excited to announce our partnership:

　　

　　Any successful crowdfunding project on Crowd Supply is eligible for a 10% discount (up to $300) on PCB assembly services at Wellcircuits. You can also apply for a coupon code for your backers. Simply send your project link to anson@wellcircuits.com to receive your discount.

　　

　　As a professional PCB production and assembly company, Wellcircuits has earned a strong reputation among engineers worldwide. This partnership will leverage our strengths to ensure smooth execution for crowdfunding projects. All of our components are original, and we guarantee on-time delivery, ensuring your supporters receive their products as quickly as possible. Additionally, you can count on excellent after-sales service at Wellcircuits.

　　

　　Let¨s create something amazing together!

Collaboration between Crowd Supply and Wellcircuits – Initiatives – Wellcircuits

　　The image above is from the crowdfunding project ＾Neosegment Digit￣ by Maks Surguy on Crowd Supply. The project has gained significant attention, raising a total of $6,500. We are proud to support Maks in assembling this project.In the eyes of industry experts, RF PCB Indeed, it has great development potential, which makes many investors more interested. https://www.wellcircuits.com/

　　

　　Wellcircuits has also assisted creators with the assembly of the following projects on Crowd Supply:

　　

　　ALio Proto Board: The All-in-One Prototyping Board

　　

　　Neosegment Digit

　　

　　Paperino

　　

　　Crowd Supply is a popular crowdfunding platform based in Portland, Oregon, known for supporting creators in bringing innovative and useful hardware to life. Their mission is to provide the necessary funding and resources to help creators deliver high-quality products to their backers.

　　

　　We first met at the 2017 Open Source Hardware Summit, where we discussed the potential for future collaboration. Both of our goals are aligned in helping enthusiasts bring their projects to life. Today, we are excited to announce our partnership:

　　

　　Any successful crowdfunding project on Crowd Supply is eligible for a 10% discount (up to $300) on PCB assembly services at Wellcircuits. You can also apply for a coupon code for your backers. Simply send your project link to anson@wellcircuits.com to receive your discount.

　　

　　As a professional PCB production and assembly company, Wellcircuits has earned a strong reputation among engineers worldwide. This partnership will leverage our strengths to ensure smooth execution for crowdfunding projects. All of our components are original, and we guarantee on-time delivery, ensuring your supporters receive their products as quickly as possible. Additionally, you can count on excellent after-sales service at Wellcircuits.

　　

　　Let¨s create something amazing together!

Wellcircuits supports Kickstarter creators through sponsorship – Activities – Wellcircuits

모모This is Sean Hodgins몶 crowdfunding project, 몷PIXO Pixel C An ESP32-Based IoT RGB Display for Make/100!몷, launched on Kickstarter. The project has been so successful that it has already garnered support from 158 backers. We are honored to have been chosen to help bring this project to life.Actually, it’s not just this reason, FLEX PCB Its own advantages are also obvious, and it is normal for the market to perform well. https://www.wellcircuits.com/

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모모Kickstarter is a crowdfunding platform dedicated to creativity, with a mission to 몷help bring creative projects to life.몸 Many creators have launched successful projects on Kickstarter, and we are excited to support them in this journey.

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모모To further support creators, Wellcircuits is offering the following exclusive benefits:

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모모10% discount on assembly services (up to $300) for any successful Kickstarter crowdfunding project. You can also request a coupon code for your backers!

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모모To claim this offer, simply send your project link to anson@wellcircuits.com, and you will be eligible for the discount.

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모모Wellcircuits is a professional PCB manufacturing and assembly company with a strong reputation among engineers worldwide. We ensure that all aspects of your crowdfunding project run smoothly. All our components are 100% original, and we guarantee timely delivery so that creators can send products to their supporters as quickly as possible. In addition, we offer exceptional after-sales support to ensure complete satisfaction.

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모모Let몶s bring creative projects to life!