[i=s]This post was last edited by SsvepX on 2018-7-23 08:54[/i] Use square wave to detect sine wave, square wave 0~5V, CD4053 power supply is +-5V, sine wave amplitude is 4V, no bias, frequency 23.5k,...
For scanning mode: 0: Laser/button 1: Laser 2: Button Function: Realize the barcode scanning function according to different scanning methods. I referred to an example that comes with evc++ (it does n...
[i=s] This post was last edited by cxmdz on 2016-12-20 14:45 [/i] Let me share a gui example I made recently. The board is 1788, 512K flash 96kSRAM and integrated LCD controller with two SDRAMs. The p...
Event details: https://bbs.eeworld.com.cn/thread-316002-1-1.html1. All prize delivery costs are borne by the winners themselves, and SF Express pays. (Since all prizes are selflessly contributed by ne...
Thanks to [size=12px][url=https://home.eeworld.com.cn/space-username-tiankai001.html]tiankai001[/url][/size] for his new work! PIC Microcontroller Learning Topics (1 ~ 12), a total of 12 topic collect...
At present, the development of wireless power supply technology for electric vehicles (EVs) is becoming more and more active. In 2012, Volvo of Sweden established Volvo Technology Japan in Tokyo as...[Details]
1. Introduction
RFID (radio frequency identification) is a non-contact automatic identification technology that emerged in the 1990s. It uses the characteristics of radio frequency signal prop...[Details]
Automotive applications are particularly sensitive to EMI events, which are unavoidable in a noisy electrical environment consisting of a central battery, bundled wiring harnesses, various inductiv...[Details]
In order to highlight the concept of "energy saving and environmental protection" of intelligent buildings, solar street lights are designed for intelligent communities. The inclination and capacit...[Details]
Electronic systems are located at different points on the automotive power bus and therefore often need to operate under very stringent power requirements. These include load dump, cold crank, very lo...[Details]
Although it is relatively easy to check the stability of a simple amplifier at lower frequencies, it may be much more difficult to evaluate the stability of a more complex circuit. This artic...[Details]
Vertical cavity surface emitting lasers (VCSELs) are gradually replacing traditional edge emitting lasers, especially in low bandwidth and short-distance communication systems where cost factors ar...[Details]
1. Introduction
Testing the temperature of steel billets before rolling is an important measure to ensure the quality of steel. Traditional manual testing is difficult to ensure product qu...[Details]
On the afternoon of July 10, Beijing time, Taiwan's largest chip designer MediaTek expects its smartphone chip shipments to grow by double digits in the third quarter of this year, and the company is ...[Details]
LED lamps and bulbs are now rapidly replacing incandescent, halogen and CFL (compact fluorescent lamp) light sources in many general lighting applications. Flyback DC/DC converters are the power su...[Details]
In recent years, with the rapid development of the information industry, dot matrix LED display screens have been widely used in various advertising and information display systems such as the fina...[Details]
The concept of state machine
State machine is an important concept in software programming. More important than this concept is its flexible application. In a clear and efficient program, ther...[Details]
introduction
MEMS is a high-tech that has flourished on the basis of integrated circuit production technology and dedicated micro-electromechanical processing methods. Pressure sensors develop...[Details]
Today, the value of electronic components in cars accounts for 15-20% of the total vehicle. In the future, this proportion may be as high as 30-40% as more safety electronics, fuel consumption and ...[Details]
Since AC mains power may experience power outages, voltage sags and surges, continuous undervoltage and overvoltage, and frequency fluctuations during supply, these factors will affect the continuous ...[Details]