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In order to avoid high fines for violating new EU rules, Apple abandoned the Lightning interface that was born in 2012 and changed the charging interface of all iPhone 15 series to Type-C interface. For a while, many fruit fans were a bit uncomfortable, and how to purchase new charging heads and data cables became a new problem.In fact, the Type-C interface only unifies the shape of the interface, which still includes many concepts such as USB4, Thunderbolt, Thunderbolt, and fully functional C-ports. The charging cables on the market also use the Type-C interface, with prices ranging from a few yuan to several hundred to thousands. So how do you choose the right charging cable for your iPhone? What are the differences between Apple original cables, Android official cables, and third-party brand cables?Kinri Energy has specially prepared original fast charging kits from Apple, Huawei, Xiaomi, OPPO, and vivo, as well as charging cables from well-known third-party brands such as Green...
2024
The switch power supply circuit is mainly composed of fuses, thermistors, mutual inductance filters, bridge rectifier circuits, filtering capacitors, switch oscillator integrated circuits, switch transformers, optocouplers, three terminal regulators, etc. To design a high-performance switching power supply, it is necessary to understand and understand the types and main functions of various components in the switching power supply. The types and main functions of common components in switch mode power supplies are as follows:Resistor1. Sampling resistor - a sampling circuit that forms the output voltage and sends the sampling voltage to the feedback circuit.2. Equalizing resistance - plays a voltage balancing role in the symmetrical DC input circuit of a switching power supply, also known as balancing resistance.3. Divider resistor - forms a resistive voltage divider.4. Discharge resistor - When power is cut off, it can discharge the charge stored in the capacitor of the electromagnet...
Remote Power Manager (Reachctrl Power), also known as Intelligent PDU, IP Power, Intelligent Power, and Rack mounted Power Distribution Unit, combines power distribution and management functions. Intelligent PDU can monitor parameters such as power supply voltage, power supply voltage frequency, and output current of each channel, as well as achieve remote control, centralized management, automatic cycle control, safety management, reliability management, etc. It is a good helper for power management.Detailed introductionThe Remote Power Manager introduces novel communication methods such as Ethernet and voice services, and adds intelligent management control modules and control chips that traditional PDU and PCU devices cannot provide, forming a power distribution unit that can be remotely controlled and planned for management. With the continuous development of the remote power manager industry, more and more enterprises and industries are using remote power managers, and some enter...
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...
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...