AC/DC power adapters are a type of power supply used to charge phones, laptops, and other electronic devices. The "CE" mark is a safety certification mark and is regarded as the manufacturer's passport to open and enter the European market. CE stands for Compliant Europe. In the European Union market, the "CE" mark is a mandatory certification mark. Products made by enterprises within the EU or in other countries must bear the "CE" mark if they are to circulate freely in the EU market, to show that the product meets the basic requirements of the EU Directive on the New Method of Technical Harmonisation and Standardization. This is a mandatory requirement for products under EU law.     The power adapters are subject to several regulations in the European Union, including the Low Voltage Directive, the EMC Directive, and Regulation (EU) 2019/1782, which is an implementing measure under the Ecodesign Directive. The CE EMC instruction covers all live products with circuit boards that generate electromagnetic radiation. Adapters exported to the EU must be CE certified under the EMC+LVD Directive. Here are some information about the regulations. Low Voltage Directive (LVD) The Low Voltage Directive (LVD) sets safety requirements for importers and manufacturers of electronics and electrical devices that

Any electronic device marketed or sold in the US must have Federal Communications Commission (FCC) approval. What is FCC, you may ask? Power adapter FCC certification is a mandatory electromagnetic compatibility (EMC) certification implemented by the Federal Communications Commission (FCC) for power adapter products. And the Federal Communications Commission (FCC) is an independent government agency, overseen by the U.S. Congress, responsible for implementing communication laws and regulations throughout America as well as enforcing them. FCC certification is designed to ensure that electronic products do not cause harmful interference to radio communications under normal working conditions, while protecting users from potential electromagnetic radiation hazards from these products. For manufacturers and suppliers who want to export power adapter, battery charger, power supply and other electronic products to the US market, obtaining FCC certification is a necessary condition for entering the market.

LED strips are not as simple as traditional incandescent light bulbs when it comes to installation and set up. Because the strip lights utilize energy efficient, and low-heat 12 volt Direct Current (DC) power, which is unfortunately not what most homes are wired with. That means you'll need to use LED power supply if you want to use LED strip lights, all equipment that provides electrical energy to the light strip is collectively referred to as an LED power supply, some people also call it an LED driver because it drives the led strip to work. So choosing a correct power supply is very important. The appropriate power supply can not only provide stable voltage and current, but also ensure the normal operation of the light strip and extend its life. When choosing a power supply suitable for the light strip, the following points need to be considered: The first step is to figure out what the voltage of the LED strip is. The majority of LED strips available on the market run at 12V DC. Others are primarily at 24V DC. Power supply device converts 120V/240V AC (depending on your location) into the voltage signal that LED strips can use, like 12V or 24V. The output voltage of the led driver is generally 12VDC or 24VDC. So when choosing a power adapter, you must ensure that its output voltage fully matches the requirements of the light strip.

Power adapters provide necessary power for various electronic equipment and ensure the safety and performance of the devices. Its quality and safety are directly related to the user's experience and personal safety. Therefore, its quality and safety are directly related to the user's experience and personal safety. According to Chinese laws and regulations, products related to electrical safety, including AC/DC power adapters, must undergo 3C certification before they can be legally sold and used.   What is CCC? In the field of product certifications, the abbreviation CCC ( also often called 3C certificate ) stands for China Compulsory Certificate. Power adapters must have a CCC certificate before they can be legally sold in China. It is a mandatory certification in China. The CCC certification is comparable to other certifications for the standardization of product quality and safety, such as the European CE system. Some requirements for power adapter 3C certification Security requirements. The 3C certification standard has strict requirements on the appearance structure, insulation performance, grounding, etc. of the power adapter to ensure that the product does not pose any threat to user safety during normal use. EMC requirements

The power adapter accelerated aging test is a method that used to simulate the aging effects on power adapters by applying increased stress conditions such as higher temperature and voltage to predict performance degradation and design failure over an extended period in a shorter time frame. It simulates the aging of the product under various factors involved in actual use conditions and creates corresponding conditions to strengthen the experiment process, thereby shortening the test time. Through a short test, you can know the degree of the product's aging equivalent to several years of use. This test is designed to identify potential issues with the product in advance, allowing for improvements and adjustments before it is officially launched. Accelerated aging testing can help us understand the reliability, durability and performance stability of the product.   Tools for aging test: The aging cabinet This test equipment mainly used to simulate a high temperature and harsh environment test equipment for high-performance electronic products, such as automotive electronic products, power supplies, monitors, exchangeable chargers, etc. This equipment is crucial for enhancing product stability and reliability. In addition, it is an important experimental step to improve product stability and reliability, and an important production process to improve product quality and competitiveness. Moreover, it can configure the main system, main power system, control system, temperature control system, time control system, etc. according to different requirements. This test program can detect defective products or defective parts. It is an effective means to quickly find and solve problems, and fully improve production efficiency and product quality.  

We run every power supply through burn-in testing before it ships. Why? To make sure it stays stable and reliable when you're using it. Simulate real-world application environments by subjecting the power supply to continuous full-load operation to assess its ability to maintain stable output over extended periods.

Establish Enterprise with Technology, Base on Quality, Uphold Integrity, Achieve Long-term Development through Diligence Recently, Kelic has been steadily engaged in product R&D, and has achieved further progress in market promotion. The company still adheres to its core values: establish enterprise with technology, base on quality, uphold integrity, and achieve long-term development through diligence. It takes technological innovation as the foundation of development, product quality as the lifeline, and honest cooperation as the principle of conduct. Down-to-earth and striving for excellence, Kelic provides customers with more stable, reliable and valuable solutions. In terms of scientific research, Kelic continues to take it as the core and invests the company's main efforts in R&D. This is to continuously verify Kelic's core concept of optimization and innovation, and moreover, to enable customers to experience better technological products from Kelic. The philosophy of "technology first, quality foremost" is also reflected in many work details of Kelic. Enhancing technological strength means enhancing the core competitiveness of products. Increasing R&D investment continuously and keeping up with technological trends is always the best reflection of serving every customer with sincerity. Kelic's development is not only reflected in the key scientific research sector, but also in its market expansion and customer service. While growing continuously, Kelic has always adhered to the cooperative concept of win-win through integrity and long-term collaboration. Ke

Keeping Pace with the AI Era: Kelic's Forward March In the contemporary era characterized by the rapid iteration and robust development of artificial intelligence (AI) technology, its influence has permeated every facet of people's lives. It not only offers convenient and efficient living experiences to the public but also propels the innovation and upgrading of production models across various industries, rendering efficient, precise, and intelligent production methods the norm. As a professional enterprise with 13 years of profound engagement in the power supply domain, Kelic has consistently concentrated on the research, development, and production of adapters, switching power supplies, LED power supplies, and industrial power supplies. Amid the AI wave, it not only fully reaps the technological dividends but also integrates AI empowerment into every link of research, development, production, and customer service. This further deepens the core business philosophy of Integrity, Quality, and Innovation and responds to the trust and expectations of global customers with superior services and products. Confronted with the development opportunities presented by AI, Kelic proactively embraces change and deeply applies AI technology to the entire operational process, making convenience and efficiency a new impetus for enterprise development. In the pre-sales service link of power supplies, the "human-machine collaboration" model has significantly enhanced sales efficiency. By leveraging AI technology to optimize cross-language communication exper

When you choose a power adapter for your electrical device, you better know what plug you need first. But there is more than one standard being used in the world. A different country may use different power cord types, different plugs, and connectors, especially the plug types. So today let’s learn about the two-pin plug first. Two-pin plug is a basic type of electrical plug. It has two pins: a hot pin and a neutral pin. These pins enable the plug to connect to a power source and create a circuit that will enable the operation of devices. The two-pin plug is ideal for smaller appliances. The hot pin connects to the hot slot of the receptacle, drawing current to power the load. The neutral pin connects to the neutral slot, returning the current to the receptacle and completing the circuit. These plugs can be easily inserted into two-slot receptacles. The two-pin plugs is not rewirable and must be supplied with a flexible cord. It can be inserted in either direction, so hot and neutral are connected arbitrarily. To improve contact with socket parts the plug has slightly flexible pins which converge toward their free ends. There are also polarized plugs. The polarized plugs feature a neutral pin that is wide

Power adapters are widely used in various industries, such as water purifier, cash register, intelligent security, commercial display advertising machine, CCTV, scanner, LED etc. Different products have different requirements for the DC size of the power adapter. There are many standards for dc connectors. So today we’ll discuss part of them. The types of DC heads can be roughly divided into the following: Coaxial power connector 1.2.5*0.7 (outer diameter * inner diameter, the same below): referred to as dc2507, it is mainly used for small electronic products and mini electronic products with limited volume, such as tablet computers; At present, tablet computers of major brands are charged with micro usb interface. • OD – Outer diameter of the plug. • ID – Inner diameter of the plug. 2. 3.5*1.35 (dc35135): mainly used for network set-top box, USB hub external power supply, webcam, LED desk lamp, etc. 3. 4.0*1.7 (dc4017): mainly used for mobile DVD, EVD, PSP and some network set-top boxes.

With the improvement of people’s living standards, they are paying more and more attention to their health. The clean and purified water is a basic necessity for good health. Then how to get clean and purified water? So the RO (reverse osmosis) system or water purifiers have become the necessary solution for ensuring safe drinking water at home. The main parts of the water purifier are the water pump, filter element, and power adapter. For these systems to function efficiently, a reliable and stable power supply or waterproof power adapter is essential. So, how to choose the

A power adapter is a device that converts alternating current into direct current, also known as an external power supply. Power adapters are an integral part of many electronic devices and are responsible for stable and reliable power supply. Despite their important role, power adapters are prone to wear and tear, resulting in a shortened lifespan. Here are some of the factors that can affect the lifespan of a ac/dc power adapter:  1.Ambient temperature. The operating environment plays a very important role in determining the lifespan of a power adapter. Engineers who want to ensure the long life of a ac/dc power adapter should also consider the maximum rated ambient temperature for the intended application. It should be taken into account that degradation can be accelerated if the power adapter is exposed to extreme temperature, humidity, dust and other environmental factors. Extreme heat or cold may affect the operation of the power adapter. High temperatures can cause thermal runaway, shortening equipment life and reducing component reliability, while low temperatures can have various effects on performance and product life. 2.Component quality. The quality of materials used in the manufacture of power adapters, such as capacitors, transformers, resistors and cables, affects the service life of power adapters. High-quality components can withstand more stress and work more efficiently over a longer period of time.  3. Load and usage patterns. The way the device is used directly affects the life of the ac/dc power adapter. Overloading the power adapter beyond its rated capacity can stress internal components, causing them to overheat and fail. To avoid overloading t

A capacitor is an electronic component that stores electrical charge and releases it when needed. It consists of two conductive plates separated by an insulating material called the dielectric. When the two plates of a capacitor are connected to the positive and negative poles of a power source, charges will accumulate on the plates, forming an electric field, thereby storing electrical energy, just like a container that can store charges. The size of the capacitor depends on the area of the plates, the distance between the plates, and the properties of the insulating medium. Capacitors are common components in switching power supplies. They can be used to reduce ripple noise and improve the stability and transient response of power supplies. However, there are many types of capacitors. How can we quickly select capacitors with high reliability and stable performance?   Knowledge of capacitor types A general understanding of capacitor types will help you quickly screen the capacitor types when selecting capacitors. There are many types of capacitors. According to the package, there are chip capacitors and plug-in capacitors. According to the dielectric, there are ceramic capacitors, electrolytic capacitors, mica capacitors, etc. According to the structural form, there are fixed capacitors, semi-fixed capacitors, and variable capacitors. In switching power supplies, we use ceramic capacitors

In electrical engineering, high voltage testing is a process that is used to ensure the safety, efficiency, and reliability of electrical components, equipment, and systems like electrical machines, circuit breakers, insulators, etc. under high voltage conditions. The high voltage test of the AC/DC power adapter and battery charger refers to the withstand voltage test of the power adapter under certain voltage conditions to verify its insulation performance and high voltage resistance. This test mainly detects whether the power adapter can work normally and does not cause safety problems by applying high voltage. High voltage testing involves procedures to ensure that electrical equipment can withstand various voltage stresses during its operational lifespan. During high voltage testing of electrical equipment, several different types of tests are performed. The Insulation Resistance Test. By measuring the insulation resistance of the power adapter at an appropriate voltage, it can be verified whether the insulation performance meets the standard requirements. The purpose of this test is to determine the electrical resistance of the insulation material used between the conducting components and the

High and low temperature test is the abbreviation of high temperature test and low temperature test. High - and low - temperature testing is a method used to determine the adaptability of products to storage, transportation, and use under high - or low - temperature climate conditions. The severity of the test depends on the temperature and exposure duration at high or low temperature. High and low temperature testing is performed to ensure the reliability and safety of AC/DC Power Adapter. During the test, it is necessary to monitor the temperature changers of each electronic component to ensure that they can operate normally under high and low temperature conditions. How to conduct point temperature testing? The constantly changing temperature environment will affect the the product’s function, performance, quality and lifespan, and accelerate product aging and shorten the service life of the product. If the AC/DC Power Adapter is in such a high and low temperature environment with large changes for a long time, it needs to have sufficient ability to resist high and low temperature cycles. Therefore, we need to simulate certain environmental conditions and conduct high and low temperature tests on the product to understand the performance of the product in this regard. If the test results do not meet the standards we set, we will improve the product according to the test results and then r

AC/DC Power adapter are an indispensable part of electronic equipment, and they provide the appropriate power supply for the equipment. People's use of power adapters has become more and more frequent, in the process of daily operation and use, you can effectively extend the service life of the dc power adapter through the following measures to ensure the stability and safety of the equipment, and bring a better use experience. Check regularly for maintenance and cleaning Regardless of whether the power adapter has a fault during use, it is necessary to carry out a regular inspection and maintenance; First check the cables, plugs and connectors of the power adapter, whether they are intact, to ensure that they are not worn, damaged or loose, to avoid physical damage, short circuit or poor contact. After the inspection, it should be cleaned, clean the adapter and its socket, and avoid affecting the heat dissipation and connection effect due to dust or dirt; You can also clean the surface and socket of the power adapter with a dry cloth or cotton swab. Avoid using cleaners that contain chemicals to avoid damage to the power adapter.  

Recently, KELIC carried out fire emergency training activities, and all employees actively responded to participate in the company to further enhance the staff's awareness of prevention and self-rescue ability, familiar with the company's emergency route, firmly build a safety defense line, alarm bell ringing, and escort the company's safety, health and orderly production and development.     The main content of the drill training activities includes the correct use of fire equipment, the correct escape posture and route, the rescue of the injured during the escape process, how to avoid and prevent the occurrence of fire and so on. In the open and ventilated place, the practical exercise is carried out. First, professional firefighters explain and demonstrate a correct use method and precautions of fire extinguishers. After the explanation is completed, it is the turn of on-site employees to carry out practical operation to extinguish the fire at the simulated fire point on the scene. In addition t

The exhibition is organized and managed by professional exhibition organizers, where exhibitors can showcase their products, services and solutions, discover and connect with potential customers, and communicate with them for follow-up business cooperation. The exhibition has three main bodies: enterprises (exhibitors), customers and competitors.         Establish a brand image: The exhibition is a face-to-face and customer communication platform, by showing their product strength, can improve the brand exposure, establish and maintain a good brand image, but also can let customers have a more comprehensive and true feeling of the brand and products, to leave a vivid impression to customers is conducive to mining and development of potential customers.     Understand the current market situation:

What is a power adapter? The AC/DC Power Adapter is an important key part of the charger, the working principle is to convert alternating current into direct current, the power adapter can provide power for the device, but also to stabilize and filter the voltage and current, in addition，it has a main feature to having a specific output voltage and current to match the needs of the device to ensure the stable operation of the device.     Application scenario of the power adapter The power adapter is generally suitable for charging and powering most electronic devices. For example, laptop computers: Laptop computers need a power adapter to convert the input alternating current into suitable direct current to power the computer and rechargeable batteries. In addition to Charger for laptop, it can also provide a stable working environment for monitors, routers, printers, etc., to meet the needs of various electrical equipment. Waterproof Power Adapter can ensure safety in wet and accidental water splashing environment can work normally at the same time, its design incre

The working principle and basic composition of the power adapter The power adapter is a device that transforms the power supply of electronic equipment and electronic appliances, and it is also a bridge between the power supply and the equipment.Its current mode is from AC input to DC output, Power adapters have been widely used，according to the connection mode ，they can be divided into Wall Mount Power Adapter and Desktop Power Adapter. A complete ac dc power adapter usually consists of transformer, rectifier, filter, input, output, power plug and circuit board and other components. Transformers and rectifiers are the most core components. The circuit board is the key component of the adapter, which is responsible for converting alternating current to direct current and stabilizing the output voltage and current.The transformer plays a role in regulating the voltage to ensure that the output voltage of the adapter matches the requirements of the device. Select the power adapter precautions Look for safety certification and identification: When purchasing a power

What's a power adapter? A power adapter is a device that converts alternating current to direct current and can also be called an external power supply. Power adapters are essential components of many electronic devices, responsible for providing a stable and reliable power supply, so it is widely used in electronic devices, such as laptop chargers, monitors, water filters and so on. The power adapter can be divided into two types of  ： Desktop Power Adapter and Wall Mount Power Adapter according to the connection method.   Know the difference between AC and DC The current direction of alternating current changes periodically, and the electrons change direction periodically from forward to reverse. That is, the alternating current will switch directions back and forth in the circuit at a certain

Referring to the previous article, we have already learned about two-pin plug and three-pin plug, so now let’s take a look at the difference between them. In a house outlet, power flows from live to neutral. The appliance you plug into an outlet completes the circuit from the live slot to the neutral slot, and electricity flows through the appliance to run a motor, heat some coils or whatever. A 2-pin plug has two pins, while a 3-pin has three. The main difference is grounding functionality. The primary function of the 3-pin plug is based on a safety function, which is an extra safety measure. The live pin provides the voltage, the neutral pin provides the return path for the current, and the earth pin provides a path to dispose of excess voltage in case there is a current leakage, which can be fatal to users. Typical applications include large appliances, including air condition, refrigerators, and some devices that cannot be grounded electronically in a dependent country with an unstable leadership. And two pins are used for double-insulated equipment that does not require the earth pin for safety reasons. Typical applications include: Mobile phone chargers, LED lights, water purifier, small kitchen appliances and so on. So the choice between the two plugs depends on the appliance that has to be equipped with protection and safety requirements. 

The power adapters of some electronic devices with high safety requirements, high power or specific electrical performance requirements often use three-pin plug. For example, the power adapters of computers, printers, projectors and other equipment can use three-pin plug to connect the metal shell of the equipment to the ground wire. When a leakage fault occurs inside the equipment, the current will be introduced into the earth through the ground wire. The three-pin plug has three pins which are the live pin, neutral pin and the earth pin. Compared to the two-pin plug, they include an additional grounding pin, which is connected to the electrical system’s ground wire. This pin is positioned below the hot and neutral pins and does not carry current under normal conditions. The earth pin is a safety feature designed to direct stray electricity away from the appliance in case of a fault, short circuit, or surge. It channels excess current to the ground, preventing electrocution, electrical fires, and damage to the appliance. Today, three-slot receptacles are commonly required in new construction for added safety. Three-pronged plugs are typically used for high-power appliances such as industrial machinery, and sensitive electronics. They are also essential for devices housed in metal casings, like computers and game consoles, where stray electricity could potentially cause shock. The grounding pin helps to safely redirec