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Shenzhen KINRI Energy Technology Co.,Ltd.

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· Why is the laptop power adapter so large？

The reason why the laptop power adapter is designed so large is mainly due to the limitations of its internal structure and the development of technology. Modern laptops generally use lithium batteries, and the output voltage of lithium batteries is generally around 10V. In order to fully utilize AC power and convert it into DC power through transformers, laptop power adapters need to convert AC power with a voltage of over 100V into 10V DC power. Therefore, large capacity transformers and capacitors are needed as components. At the same time, in order to ensure continuous and stable power output during use, the adapter also needs to have certain overcurrent, overvoltage, short circuit protection functions, etc., which also leads to an increase in its volume.Upgrade of laptop power adapterAlthough the bulky adapter has brought some inconvenience to lightweight laptops, manufacturers have not stopped working hard to improve this. In recent years, some laptop adapters have become smalle...
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04-28
2024
· Complete Guide to EV Charging Station Knowledge

With the popularization of electric vehicles(EV), EV charging stations have gradually become a topic of concern for people. However, for ordinary car owners, the knowledge related to EV charging stations is still not comprehensive enough. Today, let's learn some basic knowledge about EV charging stations together.7KW Smart AC EV Charging Station1. Types of EV charging stationsCharging piles can be divided into two types: AC charging piles and DC charging piles. The communication charging station is currently the most widely used charging station, mainly used to provide slow charging services for vehicles, with a general charging power of 3kW~22kW. DC EV charging stations can provide fast charging services for EV, with a general charging power of 50kW~400kW. In contrast, DC EV charging stations have faster charging speeds but are also more expensive and have higher installation costs.2. Standards for EV charging stationsIn order to ensure the compatibility and interoperability of vario...
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04-27
2024
· The difference between plug-in power adapters and desktop power adapters

Power adapters are divided into plug-in power adapters and desktop power adapters. plug-in power adapters, also known as plug-in power adapters, can be simply explained as plug-in power adapters. plug-in power adapters are power adapters that can be directly plugged into a power board, while desktop power adapters are power adapters that need to be placed on the desktop. The difference between desktop power adapters and plug-in power adapters is that desktop power adapters require an AC cable to be connected to the mains.plug-in power adapterdesktop power adapterThe difference between plug-in and desktop power adapters is as follows:1. Different usage scenariosA plug-in power adapter is directly plugged into a socket and is typically used for small electrical devices such as smartphones, digital cameras, and small speakers. Due to the direct insertion of the plug into the socket, it can effectively reduce the use of connectors, reduce the burden of cables, have high safety, and is por...
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04-27
2024
· What are the testing items for aging test of power adapters?

Power adapter aging test refers to conducting high load, long-term operational testing on the adapter to evaluate its performance, stability, and reliability. Aging testing can detect the long-term use of power adapters, guiding their design and development, and improving their quality. Due to the requirement of long-term operation for aging testing, the testing method of the power supply automation testing system breaks traditional methods, improves testing speed, and ensures the accuracy of test results.Power adapter aging test cabinetWhat are the testing items for aging test of power adapters?1. Load testingSimulate the current and power requirements of the power adapter under actual usage, apply maximum load to the adapter, work at high load during testing, continuously run for hours or days, and evaluate the stability and quality of the adapter under long-term high load operation.2. Switch testingTest the stability and quality of the power adapter when turned on and off.3. Temper...
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04-26
2024
· Do you know how to choose a switching power supply?

In modern electronic devices, switching power supplies play a crucial role. However, facing numerous switching power supply products, making the right choice has become a key issue.switching power supplyThe key factors in choosing a switching power supply1. Power demandClarify device power consumption: It is necessary to have a precise understanding of the actual power consumption and possible fluctuations of the device.Leave appropriate margin: The power of the selected switching power supply should be slightly greater than the equipment demand to ensure sufficient power supply.2. Voltage and current specificationsMatching equipment requirements: Carefully check the technical parameters of the equipment to ensure that the output voltage and current of the switching power supply meet the operational requirements of the equipment.Adapt to input voltage range: Consider input voltage changes in different power supply environments.3. EfficiencyEmphasize energy utilization: Efficient switc...
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04-26
2024

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