A battery pack with 4 to 6 strings can achieve fast charging with a buck-boost or buck-boost circuit. In addition, the introduction of USB PD3.1 supports 48V output voltage and 240W output power. With...
I got a book in this book grab event: Here is the 3D photo:I got this book by following others. It is a bit difficult for me and I need to study hard for a while! ! ! I want to say that I followed oth...
CSP ( chip scale packaging ) technology is driving the development of packaging and printed circuit boards towards smaller size. Wafer-level CSP refers to silicon wafers with redistribution film layer...
Please help recommend a DC/DC suitable for the following parameters, thank you! [color=#000][backcolor=rgba(0, 0, 0, 0)][size=10.5pt] 1. Voltage: Input voltage is greater than about 40V (40V, 45V, 50V...
I recently looked at several circuit diagrams and found that the COM terminals of chips or module circuits are sometimes connected to GND. I also saw a GND marked as COM in RS232. I am not a professio...
I have been working on a UCOS ii program these days, which is based on IAR software. There is one thing I don't quite understand. At the beginning of the program, after stacking the various stacks, it...
This program is written to simulate the serial port hardware mechanism. When used, a timed interrupt can be set with a time interval of 1/4 baud rate. The receiving function is called once for ea...[Details]
This article discusses how to wake up a touch-sensitive device such as a tablet without touching the device, using basic gesture recognition and novel proximity sensors. The article discusses the p...[Details]
DSP (digital signal processor) is used more and more frequently in today's engineering applications. There are three main reasons for this: first, it has powerful computing power and is capable of ...[Details]
1. Background:
The instrument system parameter detection and control of the chemical production workshop of Tangshan Coal Gas Coking Plant are all analog instruments, some of which are eve...[Details]
In recent years, with the rapid development of the information industry, dot matrix LED display screens have been widely used in various advertising and information display systems such as the fina...[Details]
Problems such as the depletion of natural resources, air pollution, traffic congestion, and rising fossil fuel prices have forced societies and individuals to seek alternative means of transportati...[Details]
Motors, especially those with brushes, generate a lot of noise. This noise must be dealt with if the appliance is to meet the requirements of EMC standards. The means to solve EMC are nothing more ...[Details]
Today, the value of electronic components in cars accounts for 15-20% of the total vehicle. In the future, this proportion may be as high as 30-40% as more safety electronics, fuel consumption and ...[Details]
Since AC mains power may experience power outages, voltage sags and surges, continuous undervoltage and overvoltage, and frequency fluctuations during supply, these factors will affect the continuous ...[Details]
With the continuous advancement of various technologies in the field of measurement and control, the baseband subsystem of general measurement and control equipment has entered the fourth generation o...[Details]
Abstract: Based on the ZigBee parking lot SMS car search system, the location of the vehicle in the parking lot is sent to the owner through SMS, which is convenient for the owner to quickly find ...[Details]
LED is the abbreviation of the English word. Its main meanings are: LED = Light Emitting Diode, a solid-state semiconductor device that can convert electrical energy into visible light. It can dire...[Details]
The emergence and development of street lamps are inseparable from the prosperity and progress of cities, which makes street lamps useful. Conversely, street lamps also make the night of the city n...[Details]
The production process of lithium batteries does not mention the previous processes such as material preparation, winding, liquid injection, and packaging, but only talks about the final formation ...[Details]
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This article will briefly analyze the success and shortcomings of high-frequency DC-DC switching power supplies in the process of miniaturization (the second basic goal), and propose m...[Details]
Power technology
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