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Shenzhen KINRI Energy Technology Co.,Ltd.

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· Do you know the advantages and disadvantages of push-pull switching power supplies?

In today's electronic world, power plays a crucial role. The push-pull switching power supply has become an ideal choice in many fields due to its unique advantages. Whether in precision instruments, communication equipment, or consumer electronics and household appliances, it has demonstrated excellent performance and reliability.Operational principle of push-pull switching power supplyThe direct current at the input end supplies power to the power supply pins of the chip through the startup circuit, and the VDD charges the capacitor after being powered on. When the operating voltage of the chip is reached, the chip begins to work, and the OUTA outputs a high level. The upper MOSFET conducts, and the current flows through the main winding of the transformer to charge the lower capacitor. The transformer converts electrical energy into magnetic energy, while the output winding converts magnetic energy into electrical energy for the load. After the upper MOSFET conducts for a period of...
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04-17
2024
· Which brand of Apple third-party charger is the best and its ranking?

Nowadays, smartphones have a wide range of functions, including video calling, drama watching, gaming, socializing, and shopping. Daily entertainment and life can be easily handled with just one phone. The fast charging capacity of mobile phones has increased from 18W, 27W, 40W, to 65W, 120W, and the charging speed has been steadily increasing. The fast charging capacity is related to the user's mobile experience. Everyone is complaining about the high cost of the quick charger on the official Apple website. Here, I would like to share the ranking of third-party chargers of Apple.1.Nank Charging Head C1The Nank Charging Head C1 charging head is a recently popular fast charging head brand, which was recently praised by major digital media as the "Best Charger for iPhone 12" in 2021. Its internet celebrity temperament and explosive sales have been once again elevated and recognized.In terms of configuration, this compact and lightweight charging head weighs only 42g, which is about 40%...
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04-17
2024
· Can I use a third-party laptop charger?

1.Can I use a third-party laptop charger? Normally, third-party laptop chargers can also be used, but the prerequisite is that the voltage, current, power and other parameters corresponding to the interface of the power adapter need to be the same as the original charger, otherwise it may cause damage to the computer. If you are unsure if a third-party charger is suitable for your laptop, please first understand the charger parameters of your laptop and choose a third-party laptop charger that meets the specifications when purchasing.2.What should I pay attention to when choosing a third-party laptop charger?(1) Power adapter parameters. When choosing a laptop battery charger, the first step is to determine the power adapter parameters of your laptop, including voltage, current, and power. If these parameters do not match, neither the original charger nor the third-party charger will function properly.(2) Brand and quality. To ensure the quality and reliability of the charger, it is...
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04-17
2024
· What are the pros and cons of high current charging vs high voltage charging？

Fast charging technology refers to the technology that shortens the charging time of devices such as electric vehicles or mobile phones by increasing charging power. The principle of fast charging technology is based on the power formula P=UI, where power equals voltage multiplied by current. To achieve fast charging, it is necessary to increase the charging voltage or current, or both. At present, there are two main fast charging technology solutions on the market: high voltage fast charging and high current fast charging. This article will introduce and compare these two solutions, analyze their advantages, disadvantages, and development trends.High voltage fast chargingHigh voltage fast charging refers to a technical solution that improves charging power by increasing charging voltage and reducing charging current. The advantages of high voltage fast charging are lower technical difficulty, lower cost, lower heat generation, and lower requirements for cables and interfaces. The dis...
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04-17
2024
· What is a self-excited switching power supply？

Self excited Switching Power Supply, abbreviated as self-excited power supply, is an electronic device that converts alternating current into direct current. It has the advantages of high efficiency, small size, light weight, and low cost, and is widely used in electronic devices.1. What is a self-excited switching power supply？A self-excited switching power supply is a type of power supply that uses AC input voltage to drive the switching transistor for self-excited oscillation. It does not require an external startup circuit to achieve voltage conversion from AC to DC. It consists of an input filtering circuit, a bridge rectification circuit, a switching transformer, an output rectification filtering circuit, and a feedback control circuit.2. Working principle of self-excited switching power supplyThe self-excited switching power supply starts working from the AC input voltage. When the input voltage is applied to the primary coil of the transformer, a magnetic field is formed, caus...
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04-16
2024

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