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The parallel P2 port of the MCS-51 series microcontroller also has two functions. For microcontrollers with internal program memory (such as customized 8051), the P2 port can be used as an input port...[Details]

　　The precautions for measuring ground resistance with a clamp-type ground resistance tester are as follows: 　　1. Users sometimes use ETCR2000 and the traditional voltage and current method for compa...[Details]

In test and measurement work, we often need to describe all periodic signals. In this case, we will use amplitude and phase. Then the phase change of the signal must be calculated when the signal pas...[Details]

Our reporter Li Wenshan Recently, data released by the China Automotive Power Battery Industry Innovation Alliance showed that from January to July this year, the cumulative installed capacity of powe...[Details]

　　1 Overview 　　Three-phase AC motors have long been a workhorse in industry because they are reliable, efficient, cost-effective, and require little or no maintenance. In addition, AC motors (such...[Details]

Beijing time, April 15th morning news, according to reports, three people familiar with the matter revealed that Intel's autonomous driving car company Mobileye has hired Goldman Sachs Group and Morg...[Details]

　   This article introduces a brick moisture content measuring instrument with simple circuit, easy installation and adjustment, convenient use, rapid testing and high accuracy, which is particularly...[Details]

Linear's LT3791 is a synchronous four-switch boost-buck LED driver controller that can make VIN higher, lower or equal to VOUT, with an efficiency of up to 98.5%, an input voltage of 4.7V~60V, an o...[Details]

Early this morning, along with iOS/iPadOS 14.4 and watchOS 7.3, software version v14.4 for HomePod/HomePod mini was also released. The most important feature of this update is the new relay function ...[Details]

Earlier, the well-known third-party market research organization IDC released the market report on China's 5G smartphones in the third quarter. Data shows that as of September, the total shipment of ...[Details]

1. Introduction to the application of LED light sources: LED lighting industry is an emerging industry, it is deeply favored by people for its unique advantages. Nowadays, in optoelectronic en...[Details]

   Emitter trackers used in MOSFET gate drive circuits have been used and we have seen that drive currents in the 2A range can be achieved with small SOT-23 transistors. In this design tip, we loo...[Details]

With the rise of the trend of miniaturization and functional diversification of electronic products, portable electronic communication products are popular, such as laptops, mobile phones, digital ...[Details]

1. Introduction At present, the world has entered the "energy-saving era". Countries are actively looking for emerging industries that are energy-saving and environmentally friendly. ...[Details]

近期由于iPhone 4走红，许多媒体纷纷宣扬iPhone将引爆传感器题材商机，在报导描述中也用上了热门的技术名词：微机电系统（MEMS），期望使题材能更热。 MEMS传感器的称呼，使许多人以为iPhone 4内所用的传感器全是用MEMS技术实现的，特别是许多苹果粉丝，阅读这类文章后也跟着在自己的部落格上宣扬这类题材，反而使歪述更为扩张。因此笔者期望藉此文说明一些传感器技术，...[Details]