II. Relay-related knowledge (8) 1. What is compound rectification? 2. Briefly describe the composition and working principle of an uninterruptible power supply (UPS). 3. What is the role of transforme...
[i=s] This post was last edited by Five plus one equals six on 2017-1-24 16:49 [/i] As shown in the figure, pins 1 and 2 are the controlled terminals (DC), and pins 3 and 4 are the control terminals (...
As the title says, I use ADC3 to sample PB1 (AIN9) but the result is always 0. There is no problem using other channels with ADC3 (tried 0, 1, 10, 11, 12, 13). There is no problem using ADC1 to sample...
My FIR filtering code#define M 16 /*number of coefficients*/#define N 16 /*number of output samples*/COEFS fir_coefs;/*coefficients structure*/int a[N];/*filter output vector* /int x0[N];short x[M+N-1...
(Open door - identify - swipe card - close door) The mechanical part of opening door and identifying door has been completed, and the program control is missing. We are looking for interested parties ...
I was studying Yang Zongde's "μC/OS-2 Standard Tutorial" and found that there was no CD attached. I hope the master can give me an X86 version of the μC/OS-2 project. If any master has the CD of the b...
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[Details]
Introduction
Power subsystems are becoming more and more integrated into the overall system. Power systems have moved from being separate "essential dangerous devices" to being monitorable...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
Nippon Electric Works and Volvo Technology Japan have developed a wireless power supply system for electric vehicles (EVs). Using this system, the two companies have successfully conducted an exper...[Details]
VP2188 is a color STN LCD module produced by Jingdian Pengyuan. This module is a dot matrix transmissive color STN display screen with a color scale of 65 k colors and white LED backlight. Its core...[Details]
1. Disadvantages of choosing too high a voltage level
Choosing too high a voltage level will result in too high an investment and a long payback period. As the voltage level increases, the...[Details]
OC faults may be the most frequent and the most frequent of all faults in the inverter. They alarm during the startup process, during the shutdown process, during operation, and even when powered o...[Details]
Motors are important products that convert electrical energy into mechanical energy to achieve automation, and they are widely used in industrial control, medical electronics, white a...[Details]
Spatial Division Multiplexing (SDM) MIMO processing can significantly improve spectrum efficiency and thus greatly increase the capacity of wireless communication systems. Spatial Division Multip...[Details]
Preface
In recent years, white light LEDs have gradually replaced incandescent bulbs and fluorescent lamps because they have unparalleled advantages over traditional light sources in terms...[Details]
LED light sources have many environmental advantages, but early products still have certain technical bottlenecks in heat dissipation and high brightness design that cannot be broken through....[Details]
0 Introduction
With the rapid development of social economy and science and technology, electric locomotives, subways and electric vehicles will be widely used. The power conversion and cont...[Details]
0 Introduction
Wireless Sensor Network (WSN) monitors the target by deploying a large number of sensor nodes in the target area. WSN realizes the positioning and tracking of the target, determi...[Details]
1 Embedded Systems
Embedded System refers to a collection of computer hardware and software with specific functions or purposes, which is divided into embedded software system and embe...[Details]
In recent years, with the increasing maturity of LED technology, LED light sources have been increasingly widely used due to their advantages of using low-voltage power supply, low energy consumpti...[Details]