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The latest report released by market research firm Counterpoint Research shows that iPhone XR is the world's best-selling smartphone in the third quarter, with a market share of 3%. So far, iPhone XR...[Details]

The "high availability" of the UPS power supply system requires that the system must have four elements: reliability, functionality, maintainability and fault tolerance. The internal topology of ...[Details]

DC/DC is a switching power supply chip. Switching power supply refers to the use of the energy storage characteristics of capacitors and inductors to perform high-frequency switching through contro...[Details]

        During the annual Worldwide Developers Conference (WWDC), Apple holds a "talk show" (The Talk Show) at Apple Park to discuss all the content released by the tech giant at this year's WWDC. 　　...[Details]

The mains over-voltage and under-voltage protector circuit consists of a voltage detection circuit and a control circuit, as shown in the figure: The voltage detection circuit is composed ...[Details]

Abstract: Aiming at the low automation level, low detection accuracy, narrow detection range and poor visualization of domestic ceramic performance detectors, a ceramic detection real-time control sy...[Details]

MOS tubes have always been one of the topics that engineers are keen to discuss, so we have sorted out the relevant knowledge of common and uncommon MOS tubes, hoping to be helpful to all engineers. ...[Details]

In 2020, the supply pattern of TV panels changed dramatically, resulting in tight supply and demand and a sharp rise in prices. Entering the first week of 2021, against the backdrop of a shortage of ...[Details]

General purpose of startup code 1. Initialization of heap and stack; 2. Vector table definition; 3. Address remapping and transfer of interrupt vector table; 4. Initialize the fracture with spe...[Details]

According to foreign media 91mobiles, Huawei applied for smartphone interface patents in the German Patent and Trademark Office in March this year under the names of "Huawei Ark OS", "Ark" and "Huawe...[Details]

Some medical testing instruments need to simulate the human body temperature environment to ensure the accuracy of the test. This article uses STM32 as the main controller and the motor driver chip DR...[Details]

Abstract: Follow-up control is a type of servo control and a type of feedback control. Its given value varies within a wide range, which allows the system's follow-up variables to quickly and accur...[Details]

5G has become a battleground with its three major features of "high speed, low latency, and wide connection". In fact, 5G is not an independent, new wireless access technology, but the evolution of...[Details]

Central multifunctional touch screens are increasingly replacing dedicated switches. Although central multifunctional touch screens look sophisticated and are cheaper to produce, they can distract th...[Details]

The servo motor encoder is an important component of the servo system. Its function is to convert the servo motor's rotation position, speed and other information into electrical signals to provide...[Details]