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