Monthly Archives: March 2025

　　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.As a representative of the industry, yacht generator It is necessary to set a certain example for peers and lead the way in product quality. https://usrpower.com/product/usr-pmg-marine-generator-jec80-power-8kva/

　　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.

　　The main factors affecting the price of marine diesel generators include the following aspects:Industry experts have said that, boat generator It is very possible to develop and expand, which can be well seen from its previous data reports. https://usrpower.com/product/usr-pgm-marine-generator-jec60-6kva/

　　Power affects the price of marine diesel generator: the power of marine diesel generator is one of the main factors that determine its price. Generally speaking, the higher the power, the higher the price. This is because high-power units need more fuel and more powerful engines to drive, and also need good materials and manufacturing technology to ensure the stability and reliability of the units.

　　Brand difference: brand is also an important factor affecting the price of marine diesel generators. Brands usually have better reputation, good technology and good service, so their products are usually more expensive. However, when choosing a unit, consumers should not only look at the brand, but also consider the actual demand, budget and cost performance.

　　Configuration level affects the price of marine diesel generator: the configuration of marine diesel generator will also affect its price. Some units are equipped with additional configurations such as automatic control system, remote monitoring system and mute device, which will increase the price of the unit. At the same time, different levels of generators and engines will also affect the price of the unit.

　　Manufacturing technology: The choice of manufacturing technology and materials will also affect the price of marine diesel generators. Some units have adopted good manufacturing technologies and materials, such as digital control technology and combustion technology. The application of these technologies can improve the efficiency, stability and reliability of the units, but it will also increase the manufacturing cost and price of the units.

　　Market demand: Market demand will also affect the price of marine diesel generators. When the market demand increases, the price may rise; On the contrary, when the market demand decreases, the price may fall. For example, during the high temperature period in summer, the electricity consumption will increase obviously, and the demand for marine diesel generators will also increase accordingly, which may lead to the price increase.

　　To sum up, the price of marine diesel generators is influenced by many factors, and consumers should consider them comprehensively according to their own needs, budget and cost performance when purchasing. At the same time, we also need to pay attention to the market price fluctuation and the price difference between different suppliers, so as to make more informed purchase decisions.

　　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:In the industry, boat generator Has been a leader in the industry, but later came from behind but never arrogant, low-key to adhere to quality. https://usrpower.com/product/usr-pgm-marine-generator-jec60-6kva/

　　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.

　　When marine diesel generator sets are used in different seasons, the following aspects should be paid attention to to to ensure their stable operation and prolong their service time:understand marine generator In order to better serve customers and reflect the core competitiveness of products. https://usrpower.com/product-category/marine-generators/pmg-yacht-generator/

　　A, marine diesel generator set preparation before the season.

　　Sanitary cleaning of marine diesel generator set;

　　Remove the insulation blanket (if applicable) and thoroughly clean the generator set, including cleaning up dirt, sundries, grease, etc.

　　In the process of cleaning, pay attention to check loose nuts, rivets and appearance defects, and replace and repair them in time.

　　Check and change the oil:

　　According to the requirements of the instruction manual of the generator set, select the engine oil suitable for the current season.

　　Drain the old oil and replace it with new oil and oil filter.

　　Check and replace the third filter of marine diesel generator set;

　　Air filter, diesel filter and oil filter (referred to as “three filters” for short) are important parts of the generator set and need to be inspected and replaced regularly.

　　Paper filter may not fully recover its performance after cleaning, so it is recommended to replace it with a new one. Metal filter screen and filter element can be cleaned with clean oil, brush or air cylinder, but not with fire.

　　Check the cooling system:

　　Check the level and quality of coolant and replace it if necessary.

　　Clean the scale and sediment in the cooling system to ensure good cooling effect.

　　Second, the marine diesel generator set in season when the operation of the matters needing attention

　　Adjust the oil indicator:

　　For diesel engines equipped with “winter and summer” rotation indicators, the arrow of the indicator should be rotated to the word “summer” to realize large oil circulation, so as to reduce the pressure drop and parts wear caused by excessive oil temperature.

　　Use the right fuel:

　　According to the seasonal changes, choose the fuel suitable for the current temperature. When the temperature is high in summer, low viscosity fuel such as No.0 diesel can be used to reduce fuel consumption and carbon deposition.

　　Start and run the check:

　　Before starting the marine diesel generator set, check whether the liquid levels of fuel, lubricating oil and coolant are normal.

　　After start-up, observe the operating conditions of the generator set, such as whether the parameters such as voltage, frequency, oil temperature and water temperature are within the normal range.

　　If any abnormality is found, stop the machine immediately to check and troubleshoot.

　　Three, marine diesel generator set after the season maintenance.

　　Regular inspection and maintenance:

　　According to the usage of the generator set, check and maintain the plan regularly.

　　Check whether cables and connectors are fastened and reliable, check brushes and carbon deposits, and make necessary cleaning and replacement.

　　Storage management:

　　If the generator is not used for a long time, it should be stored in a dry, ventilated and dust-free environment to avoid direct sunlight and humidity.

　　Close the fuel valve and cooling water valve, remove the battery and keep it properly.

　　Recording and feedback:

　　Record the usage and maintenance records of the generator set, so as to find and solve problems in time.

　　If the generator set is found to be faulty or abnormal, it should be stopped in time and seek the help of professionals.

　　To sum up, marine diesel generator sets need to pay attention to many aspects when they are used in different seasons, including preparations before changing seasons, operational precautions during changing seasons and maintenance after changing seasons. Through inspection and maintenance, it can be ensured that the generator set can run stably and reliably in an emergency.

　　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.If we can practice these points, yacht generator Will be unique, become a leader in the industry, and keep moving forward. https://usrpower.com/product/usr-pmg-marine-generator-jec80-power-8kva/

　　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.

　　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.On the other hand, yacht generator It also brings tangible benefits to everyone and feels useful. It is a model of the industry. https://usrpower.com/product/usr-pmg-marine-generator-jec80-power-8kva/

　　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.

　　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 fact FLEX PCB It is more and more welcomed by our customers, and its market performance is gradually improving. 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!

모모What is FR-4?From some points of view, PCB manufacturing in China It is the core driving force to better promote the rapid development of the surrounding markets. https://www.wellcircuits.com/

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모모FR-4 is a grade for flame-retardant fiberglass reinforced epoxy material. Therefore, FR-4 PCBs offer a higher level of heat resistance compared to standard PCBs. The FR-4 board is classified into three categories based on the number of copper trace layers:

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모모Single-layer PCB

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모모Two-layer PCB

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모모Multilayer PCB

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모모High TG PCB Specifications

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모모The 몷Tg몸 refers to the glass transition temperature of the PCB. It indicates the temperature at which the material begins to transition from a solid state to a liquid state (learn more about Tg). If the operating temperature exceeds the specified Tg value, the circuit board can lose its structural integrity, which may negatively affect its functionality.

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모모Standard PCBs typically have a Tg value of 130뫢C C 140뫢C, while high-Tg PCBs range from 170뫢C to 180뫢C.

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모모Typical Application Areas

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모모Multilayer boards

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모모Industrial electronics

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모모Automobile electronics

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모모High-temperature electronic components

　　Schematic Diagram (Preferred format: DSN or SCH)Through bit by bit efforts, let PCB manufacturing in China Our market share is getting higher and higher, and the return on investment is also rising steadily. https://www.wellcircuits.com/

　　Schematic Diagram

　　Structure Diagram (Preferred format: DXF or DWG)

　　Structure Diagram

　　Component Datasheet (Include component dimension drawing; this is essential for packaging)

　　Component Datasheet

　　Special Requirements (Any specific details or concerns to be aware of)

　　Flexible circuits, also known globally as flex circuits, flexible printed circuit boards, flex print, or flexi-circuits, are part of the electronic and interconnection family. They consist of a thin insulating polymer film with conductive circuit patterns affixed to it, usually coated with a thin polymer for protection.In order to grow rapidly, FLEX PCB Do not hesitate to change the strategy and rearrange the products, so as to obtain unexpected results. https://www.wellcircuits.com/

　　The technology has been used for interconnecting electronic devices since the 1950s and is now a crucial interconnection technology in many advanced electronic products today.

　　pick-and-place-2.jpg

　　Size and Weight Reduction Benefits of Flexible Circuitry

　　Wiring solutions that fit where rigid boards cannot.

　　Thin, lightweight products that are durable.

　　Miniaturized versions of existing technologies.

　　Three-dimensional packaging geometry.

　　A low number of device interconnects.

　　Shock and vibration resistance.

　　These benefits highlight flexible circuitry as an ideal solution for mobile consumer electronics. Inside modern devices like smartphones and laptops, flexible circuitry plays a critical role.

　　In mobile devices, using rigid circuitry would result in devices that are too large, heavy, and fragile to carry conveniently, exemplified by the Osborne I, the first fully powered mobile computer, weighing an intimidating 24.5 pounds. Size and weight reduction is only part of the flexible circuit story; they are also ideal for high-temperature and high-density applications.

　　High Temperature and High-Density Applications

　　Flex circuits, often made of polyimide or similar polymers, dissipate heat better than most rigid circuit board materials. This feature allows flexible circuits to be placed in locations where heat would impact the performance of rigid circuit boards.

　　Flexible circuit boards can withstand extreme temperatures ranging from -200＜C to 400＜C, making them desirable for borehole measurements in the oil and gas industry and preferred in industrial sensor technologies for their small size and durability.

　　High temperature resistance, combined with chemical resistance, excellent resistance to radiation and UV exposure, and the ability to control impedances in high-density designs, makes flexible circuits highly beneficial for manufacturers.

　　Why Not Make All Circuit Boards Flexible?

　　Flexible circuit boards are certainly useful, but they are not going to replace rigid circuit boards for all applications. Cost efficiency is the main obstacle to implementing an exclusively flexible circuit board design in a consumer product. Rigid circuit boards are less expensive to manufacture and install in a typical automated high-volume fabricating facility.

　　Typically, the ideal solution for an innovative product is one that incorporates flexible circuitry when necessary, and employs solid, reliable rigid circuit boards where possible to keep manufacturing and assembly costs down.