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Shenzhen KINRI Energy Technology Co.,Ltd.

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· How to choose a water purifier power adapter with waterproof function?

In today's era of increasing environmental awareness, water purifiers have become essential equipment for many households and offices. However, during the use of water purifiers, we inevitably encounter some problems, one of which is the waterproof function of the power adapter. In this article, we will explore the importance of waterproof function of water purifier power adapters and how to choose a power adapter with waterproof function.1. The importance of waterproof function of water purifier power adapter● Prevent accidental electric shockIf the power adapter of the water purifier has waterproof function, it can effectively prevent the occurrence of accidental electric shock. If the power adapter is not waterproof during the use of a water purifier, it may cause electric shock accidents and pose safety hazards if it comes into contact with water droplets or humid air. A power adapter with waterproof function can effectively avoid this situation and ensure safe use.● E...
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04-24
2024
· Solution to the interference problem of high-frequency switching power supply

With the development of power supply technology, high-frequency switching power supply control has gradually evolved from analog circuits to high integration control devices such as microprocessors and DSPs. These devices have small size and high precision, but the electromagnetic interference and radiation inside the switching power supply are stronger compared to other communication equipment working environments, which puts higher requirements on auxiliary power supplies. This article elaborates on the working characteristics and waveforms of auxiliary power supplies in high-frequency switching power supplies, and focuses on analyzing the issues that should be paid attention to and the selection of parameters in the design of high-frequency switching power supplies based on experimental data.1. Interference issues with high-frequency switching power suppliesIn current intelligent switch mode power supplies, internal microprocessors or DSPs are used for monitoring and communication...
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04-23
2024
· How to perform maintenance operations on switching power supplies?

How to carry out maintenance operations for switching power supplies, and what are the commonly used maintenance methods? Here are four methods for switch mode power supply maintenance, including short circuit method, false load method, etc. Let's understand together.Four Methods for Maintenance of Switching Power SupplyThere are three methods: short circuit method, series bulb method, false load method, and exchange method.1. Short circuit methodThe switching power supply of LCD displays mostly uses a direct sampling and stabilizing control circuit with a photoelectric coupler. When the output voltage is high, a short circuit method can be used to distinguish the defect range.2. Series bulb methodThe series light bulb method refers to removing the fuse of the input circuit and using a 60W/220V light bulb to string at both ends of the fuse. After applying communication voltage, if the light bulb is very bright, it indicates that there is a short circuit in the circuit. A light bulb ha...
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04-23
2024
· What standard requirements do switching power supplies need to meet?

Regular switching power supplies need to meet the following standard requirements.1. EMC standard requirementsThe EMC standard for switch mode power supplies is a specification requirement for their electromagnetic compatibility performance, to ensure stable operation in interference environments without generating electromagnetic radiation that hinders the normal operation of other electrical equipment. Switching power supplies need to meet relevant standards such as EN55022, CISPR 22, and FCC PART15B during production.2. Safety standard requirementsThe safety standards for switch mode power supplies usually require that there should be no issues such as leakage or electric shock during use, and there should be no safety hazards such as overheating or fire. The safety standards of switch mode power supplies usually require compliance with relevant national and regional safety certification standards such as IEC60950-1 and GB4943.3. Energy efficiency standard requirementsIn order to e...
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04-23
2024
· How to reduce transformer losses in switching power supplies?

Switching power supply transformer losses can be reduced through the following two aspects.1. Reduce copper loss(1) Choose a lower current density;(2) Reduce the number of turns, but it will increase the magnetic flux density of the magnetic core and increase the iron loss. When the copper loss is significantly higher than the iron loss, use with caution;(3) Changing the transformer process to reduce the AC resistance of the winding can be achieved by reducing the diameter of the copper wire (without reducing the total cross-sectional area), increasing the adjacent faces of the primary stage (which will increase the distributed capacitance of the primary stage), reducing the distance between the primary stages (which will increase the distributed capacitance of the primary stage), and loosening the coil;(4) Changing circuit operation parameters to reduce AC resistance, such as lowering switching frequency, can increase the magnetic flux density of the magnetic core and increase iron l...
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04-23
2024

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