The new generation of iPhone 8 / iPhone 8 Plus / iPhone X that supports PD fast charging has appeared. Although most consumers know that iPhone already supports fast charging, and major media have als...
485 (generally known as RS485, EIA-485) is an electrical characteristic of the physical layer of the OSI model, which specifies the standard for 2-wire, half-duplex, multi-point communication. Its ele...
This car charger was given to me by someone else. It is of good quality and should be a relatively cheap one. I changed it after using it for a while because of poor contact. Now the new one I bought ...
The signal at the signal input IN is a sine wave (which contains more harmonic components). Remember to filter and follow it and then pass through a passive crystal oscillator. The 8M marked on the fi...
This book introduces the theory and design methods of switching power supplies while taking into account both practicality and theory. It is a book specially written for researchers and engineers enga...
Discussion on LED driver selection
1. LED driver IC features and selection
Question from netizens: Do LED drivers have to use dedicated LED driver ICs? What are the advantages and d...[Details]
Universal Instruments works with experienced US distributors to bring the company's solutions to customers in the mid-Atlantic region of the United States. In order to strengthen its strength in th...[Details]
It is easy to find 100fF capacitors as parasitic elements in your power supply . You must understand that you have to deal with them to get a power supply that complies with EMI standards.
A...[Details]
STM8S's PB4 and PB5 are I2C function pins. There are no pull -up resistance inside. It is true OC. As a control output, it can add a 10K to a 10K resistance to enhance the driver. PB4/PB5 only have...[Details]
Question one
Reason: Undefined symbol SystemInit, translated as: SystemInit symbol is not defined, the following parentheses tell you that it is mentioned in the startup_stm32f10x_md.o ...[Details]
CMMB is the abbreviation of China Mobile Multimedia Broadcasting. CMMB mainly provides broadcasting and television services for small-screen portable handheld terminals such as mobile phones and PD...[Details]
Programmable logic controllers (PLCs) control various types of equipment through input and output signals, and can execute user-oriented instructions such as logical operations, sequential control,...[Details]
According to Jiwei.com, Xiaomi’s official Weibo account officially announced today that Xiaomi’s annual flagship MIX 4 will be released at Lei Jun’s annual speech on August 10. Xiaomi said that MIX...[Details]
At present, with the continuous increase of LED display industry in China, LED large-screen displays are gradually increasing in the streets and alleys of major cities, people's consumption level i...[Details]
1 Introduction
Most of my country's medium and large petrochemical enterprises use a small current grounding system for power supply, and the power system is relatively large. This type of syst...[Details]
4Layout and routing rules
The layout of components on the PCB board can be carried out according to the following principles:
Layout is performed according to the function and type of...[Details]
A switching power supply is a power supply that uses modern power electronics technology to control the time ratio of the switch on and off to maintain a stable output voltage. With the ATMEGA16 mi...[Details]
The so-called static VAR generator (SVG) in this text refers specifically to a device that uses a self-commutated power semiconductor bridge converter to perform dynamic reactive power compensation...[Details]
With the rapid development of modern society, along with the improvement of people's living standards and the acceleration of the pace of life, many bottled, canned and bagged foods and beverages that...[Details]
As the new four modernizations enter the "second half" of intelligentization, intelligent driving and intelligent cockpit have become the hottest topics in the industry. However, many people tend t...[Details]
Power technology
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