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Shenzhen KINRI Energy Technology Co.,Ltd.

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· The correct way to charge a mobile phone

For many people, the amount of battery left on their mobile phones is a crucial question. What is the correct way to charge a mobile phone? Do I have to fully charge my phone?There is always a saying about charging: when the phone runs out of battery, it needs to be fully charged each time, which is beneficial for battery maintenance. Charging at any time can affect the battery life.In fact, these theories are quite outdated.Rechargeable batteries widely used in earlier years, such as nickel cadmium batteries, mainly use nickel hydroxide and metal cadmium as raw materials, but their drawbacks are obvious: they have a memory effect.When the battery is not fully charged or fully charged multiple times, the battery capacity will "remember" the amount of electricity charged during charging and power-off, treating them as the maximum and minimum values of electricity, resulting in a decrease in battery capacity.But now, nickel cadmium batteries and other batteries have gradually been phas...
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03-11
2024
· The production process of switching power adapter (2)

The design and production of switch mode power adapters should start from the main circuit, where the power conversion circuit is the core of the switch mode power adapter. The structure of a power conversion circuit, also known as a switching power supply topology, has multiple types. The topology also determines the corresponding PWM controller and output rectifier/filter circuit. The previous article explained the circuit structure and control circuit, while this article will introduce the auxiliary circuit of the switch power adapter, circuit schematic organization, and high-frequency transformer production.1. Determine the auxiliary circuitSwitching power supply adapters usually consist of input anti electromagnetic interference filters, rectification filtering circuits, power conversion circuits, PWM controller circuits, output rectification filtering circuits, etc. The power conversion circuit is the main circuit of the switching power supply adapter, which plays a crucial role...
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03-09
2024
· The production process of switching power adapter (1)

The design and production of switch mode power adapters should start from the main circuit, where the power conversion circuit is the core of the switch mode power adapter. The structure of a power conversion circuit, also known as a switching power supply topology, has multiple types. The topology also determines the corresponding PWM controller and output rectifier/filter circuit. The following is a general process for designing and manufacturing switch mode power adapters. 1. Determine the structure of the circuitWhether it is an AC/DC switching power supply or a DC/DC switching power supply, its core is a DC/DC converter. Therefore, the circuit structure of the switching power adapter refers to the structure of the DC/DC converter. The commonly used topology of DC/DC converters in switching power supplies is as follows:a) Buck Converter, also known as buck voltage regulatorb) Boost Converter, also known as Boost Voltage Stabilizerc) Flyback Converterd) Forward Convertere) Half Br...
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03-09
2024
· The difference between active power supply and passive power supply

The full English name of PFC is "Power Factor Correction". A computer switching power supply is a capacitive input circuit. Since the maximum current and maximum voltage of AC power do not occur at the same time, the product of the power calculation formula "current x voltage" does not equal the power of the current work. In this case, we also need to multiply it by a coefficient, This coefficient is PFC, also known as power factor correction, and its value range is between 0 and 1. Basically, power factor can measure the degree to which electricity is effectively utilized, and the larger the power factor value, the higher its electricity utilization rate. There are currently two types of PFC, one is passive PFC (also known as passive PFC) and active PFC (also known as active PFC).Passive PFC is usually a large inductor composed of multiple silicon steel sheets wrapped with copper wires. Its principle is to use inductance compensation method to reduce the phase difference between the...
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03-08
2024
· How to Choose Modular Power Supply in Automotive Electronics and Other Fields？

Module power supply is a power supply that can be directly mounted on printed circuit boards, providing power for specialized integrated circuits (ASICs), digital signal processors (DSPs), microprocessors, memory, field programmable gate arrays (FPGAs), and other digital or analog loads. Generally speaking, these types of modules are referred to as load (POL) power supply systems or point of use power supply systems (PUPS). Due to the obvious advantages of modular structure, modular power supplies are widely used in communication fields such as switching devices, access devices, mobile communication, microwave communication, optical transmission, routers, and automotive electronics, aerospace, etc.The selection of module power supply should consider the following points:1. Consider the output power of the product:1-60W, it is generally recommended that the actual power used is 30-80% of the rated power of the module power supply (the specific proportion is also related to other fac...
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03-07
2024

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