First of all, I wish you all a happy Chinese New Year. This year can actually be described as "turbulent". Electronic technology and chips have become the top search terms in 2019. Every fluctuation i...
Basic knowledge of Keil C51 development system 1. Section 1 System Overview Keil C51 is a 51 series compatible microcontroller C language software development system produced by Keil Software, USA. Co...
How to use NE555 to build a square wave signal with a duty cycle of 50%, a signal amplitude of -5V~+5V, and an adjustable frequency (1khz~50khz). I have only learned the basics of circuit analysis and...
Rule 1: Understand what is DC/DC power supply and DC/DC conversion circuit classification. DC/DC power supply circuit is also called DC/DC conversion circuit. Its main function is to convert input and...
As shown in the picture, the actual boost voltage of the ME2139 DC-DC boost IC I used is 4.8V, and the current it can withstand is 2.5A. There is a series heating wire (2.5R) in the COIL, and I connec...
In this section, we will improve the button function implemented last time and provide a button response function. Currently, we only implement a switching function of turning the breathing light on a...
This circuit uses the method of cutting off the power supply of the receiver and then powering it on again, so that the satellite receiver automatically resumes normal operation. The entire process...[Details]
environment: Host: WIN10 Development environment: MDK5.13 MCU:STM32F103 illustrate: The basis of the gui library is a 2D graphics library that provides drawing functions for controls This graphics ...[Details]
This article introduces the phase compensation of wound-rotor asynchronous motors. In order to improve the power factor of the power supply line, it is generally achieved by installing synchronous ...[Details]
The 4th Focuslight Laser Application Industry Forum was successfully held in the Xi'an Focuslight Technology Co., Ltd. The forum was born in 2015. After four sessions of careful construction, it has ...[Details]
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In early June this year, when Steve Jobs, who was still on sick leave, announced that Apple would build a new headquarters that looked like a "spaceship", Apple fans around the world were onc...[Details]
Huami Technology and Amazon Web Services recently announced a strategic partnership. Huami Technology will fully use Amazon Web Services around the world, using its global infrastructure, industry-le...[Details]
1. Overview
With the development of science and technology, PLC is increasingly used in industrial control. The reliability of PLC control systems directly affects the safe production and econ...[Details]
Although Doherty power amplifiers have high efficiency, their linearity is usually poor, and digital pre-distortion technology is needed to linearize them. In order to meet the increasingly higher c...[Details]
Zhang Xiaomu, Party Committee Member of State Grid Ningxia Electric Power Co., Ltd. and General Manager of Yinchuan Power Supply Company
The company's second quarter work meeting in 2019 point...[Details]
Design a single-phase industrial frequency AC power parameter detector based on MCS-51. The AC effective value is 0-220V, and the current effective value is 0-40A. The voltage and current values ar...[Details]
Introduction Over the past fifteen years, energy demand has increased tenfold, and energy costs have risen fourfold. Power outages and brownouts have already occurred in the United States and ...[Details]
Power devices, such as IGBT, Power MOSFET and Bipolar Power Transistor, etc., need to be adequately protected to avoid damage caused by conditions such as undervoltage, loss of saturation, Miller effe...[Details]
The latest statistics show that one out of every three smartphones in the world is a Chinese brand. In addition, Huawei ranked second in the global market share ranking in the first quarter of this y...[Details]
The basic framework is written according to the program in Guo Tianxiang's Lesson 8, but when fading in, the instruction Guo used is write_com(0x18); But when I used it, it just didn't show up, so ...[Details]
The servo motor acceleration and reduction system is a common transmission device in the field of modern industrial automation. It achieves precise control of the load by converting the high-speed ...[Details]