The most common ones now are voice control, light control, and infrared lights, but they are still not very convenient, and many of them are not easy to use. [The voice control of my staircase is not ...
noise
Electronic noise is a serious problem in production environments. Fluorescent lights, mechanical devices, large metal objects that act as antennas, such as component handlers, and other noise so...
Event Details:
https://bbs.eeworld.com.cn/thread-290311-1-1.htmlEveryone, check which day you are on duty and be prepared!Friends who have confirmed their duty time can leave a footprint here to show ...
I am using evc4 and GT4220 development board. The database is created under GT4220. How to query the records in the .dat file? I hope experts can give me some advice. Since I am a beginner in EVC, it ...
[font=Tahoma]Hello everyone, the circuit below is a sine-rotating AC signal processing circuit. May I ask 1) What are the functions of C54 and C55? Do R29 and C54 form a low-pass filter circuit? 2) Wh...
September 26In the afternoon, Brother Niu went to Jing'anzhuang National Exhibition to visit the China International Auto Parts Expo. Hall 1 is dominated by Zhejiang manufacturers, including private e...
This program is written to simulate the serial port hardware mechanism. When used, a timed interrupt can be set with a time interval of 1/4 baud rate. The receiving function is called once for ea...[Details]
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[Details]
At present, the traffic congestion in cities is quite serious. According to relevant news reports: In China, the traffic congestion has expanded from megacities such as Beijing, Shanghai, and Guang...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
DSP (digital signal processor) is used more and more frequently in today's engineering applications. There are three main reasons for this: first, it has powerful computing power and is capable of ...[Details]
1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
1. Background:
The instrument system parameter detection and control of the chemical production workshop of Tangshan Coal Gas Coking Plant are all analog instruments, some of which are eve...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[Details]
12v Lead Acid batteries used in trucks, cars, RVs and uninterruptible power supplies are usually rated at 12V. This circuit monitors the battery, the charge and discharge curves, gives the cu...[Details]
At present, a large number of cooling tower fans, speed fans and special fans are in use in petroleum, chemical, pharmaceutical, metallurgical and other enterprises. Some fans have no monitoring in...[Details]
introduction
Steam turbines are driven by high-temperature and high-pressure steam generated by boilers to run at high speed. They are key power equipment in thermal power plants. The emergenc...[Details]
As the global LED market demand continues to increase, my country's LED industry will face huge opportunities in the future. However, the core LED technology and patents are basically monopolized b...[Details]
introduction
At present, the research on micron and nanotechnology is very active, which has led to the rapid development of microtechnology and micro-mechanical electronic system (MEMS) t...[Details]
This article discusses the six design steps of LED lighting system design in detail: (1) determine the lighting requirements; (2) determine the design goals and estimate the optics; (3) the efficie...[Details]
The emergence and development of street lamps are inseparable from the prosperity and progress of cities, which makes street lamps useful. Conversely, street lamps also make the night of the city n...[Details]