Driving a three-phase BLDC/PMSM motor requires varying degrees of intelligence to ensure the correct magnetization sequence is successfully generated. By using a microcontroller, motor drive designers...
1. If the MCU has a serial port peripheral, plus a level conversion chip, such as MAX232, SP3485, it is the RS232 and RS485 interface. 2. RS485 uses differential signal negative logic, +2~+6V represen...
#Create a new folder and store files in a USB flash drive in C language in Linux##1. Storage path plan```c #includeint main(void) { char file[30] = {'\0'}; //File name char filefolder_path[30] = {'\0'...
[i=s]This post was last edited by hujj on 2020-12-23 16:30[/i]After the LCD display driver is completed, the DS1307 calendar module is driven. This module uses I2C communication. I used the CLK and DI...
Power supply topology: PSR. Control mode: PSM. Switch chip: LNK3604D.Input 220VAC, output not fully loaded.1. How to determine whether the power supply is stable?2. Can the error in transformer manufa...
I would like to ask about the design/sample making of high-frequency transformers. If I provide the parameters in the figure to the manufacturer, there should be no problem in making this kind of tran...
1 Overview of the working principle of the keyboard The keyboard is the most common device in the computer, and it is also the device that is most easily intercepted and reproduced except for the di...[Details]
Recently, the mold of Apple’s new iPhone case was exposed. Judging from the information summarized by all parties, the “heater-shaped” camera on the back of Apple’s new iPhone is basically a done dea...[Details]
Refer to Chapter 10 "PWM Timer" in the S3C2440 data sheet Overview The S3C2440A has five 16-bit timers. Timers 0, 1, 2, and 3 have pulse width modulation (PWM) functions. Timer 4 is an internal tim...[Details]
Foreign media GSMArena today exposed a technology demonstration phone of realme. The phone uses a single-hole curved screen and has a matrix rear triple-camera design. It is the first mobile ph...[Details]
After Hertz discovered electromagnetic waves, they were first used in wireless telecommunication transmission experiments. The earliest wireless telecommunications controlled the spark dischar...[Details]
Source: APP Devoloper Magazine From 5G and driverless cars to scientific research, hardware is required to perform unique tasks reliably, quickly, and efficiently, and to adapt to changing standard...[Details]
China Energy Storage Network News
: On December 12, the Yinchuan Urban Energy Internet Comprehensive Demonstration Project of State Grid Ningxia Electric Power Co., Ltd. - the 110 kV Fengdeng...[Details]
Network Analyzer Block Diagram Figure 1 shows the internal block diagram of a network analyzer. To complete the transmission/reflection characteristic test of the device under test, the network analy...[Details]
Steps and diagrams: 1. First, let me give you the CPU data. You should pay attention to the three red circles, architecture, model, Flash and SRAM size as shown in Figure 1 (STM32F107VC 256KB F...[Details]
Hydrogen energy company Verdagy has raised $25 million in a new round of funding, just months after announcing its spinoff. The lead investor is TDK Ventures, with additional investment from a number...[Details]
On January 18, Unigroup Guoxin released its performance forecast, saying that the company expects to achieve a net profit attributable to shareholders of listed companies of 1.9 billion yuan to 2.1 b...[Details]
The top annual event of the embedded industry - Shenzhen International Electronics Exhibition (ELEXCON 2019) was grandly opened at the Shenzhen Convention and Exhibition Center on December 19. Nation...[Details]
Wide dynamic range
Digital wide dynamic range does not achieve the purpose of expanding the dynamic range of imaging in a real sense, but it improves the contrast of local areas through the so...[Details]
The appearance of the transformer clamp ammeter is shown in Figure 1. It is mainly composed of a through-type current transformer and a magnetoelectric rectifier system measurement device, as shown i...[Details]
Recently, the planned projects of Jiangsu Province's Carbon Peak and Carbon Neutrality Science and Technology Innovation Special Fund in 2024 were announced. A total of 14 projects are planned to b...[Details]
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