On a night in early summer more than 20 years ago, in the hangar of an aviation museum of a university, two seniors who were about to graduate were "drinking wine and talking about heroes". The wine w...
Nowadays, with people's attention to green and sustainable development, and governments of various countries have successively introduced policies to limit carbon emissions, renewable clean energy suc...
Aries mother often reminds Aries: "Don't swing when you are wearing a skirt; otherwise, the little boys will see your underwear!" One day, Aries said to her mother happily: "Today, Xiao Ming and I had...
[i=s]This post was last edited by jameswangsynnex on 2015-3-3 20:02[/i]The battle for IPTV dominancePolicy barriers to IPTVH.264, AVS and MPEG4 three major standardsSingle content and lack of business...
Energy conservation and environmental protection recruitment needs (focus, urgent recruitment) Product R&D Director 20W/Y ? Recruitment number: several ? Job responsibilities Responsible for the resea...
The simple music box I made is not fully functional. The functions of switch 1 and switch 2 are not implemented. Please help me see if there is a problem with the program or somewhere else. Urgent hel...
System design is a complex process. It is not enough to just use ICs. There are many details to consider. This article uses a high-fidelity music playback system as an example to introduce how to s...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
Continuity test
A variety of devices need to be checked for continuity, including cable assemblies, printed circuit boards, and connectors to ensure that these components have the expected contin...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
In the "digital pressure measurement" experimental device of applied physics, the subject technical knowledge of analog circuits, digital circuits, sensors and single-chip microcomputers is used. In o...[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]
People who often surf the Internet until late at night, their families always complain that turning on the big lights in the living room affects their rest, but some people don't have keyboard ligh...[Details]
Based on the actual situation, a remote intelligent anti-theft alarm device for home use, connected to the telephone line, simple to operate, and stable and reliable in operation is designed. When ...[Details]
1 Introduction
CAN (Controller Area Network) bus is a kind of field bus. It is used in many industrial sectors due to its outstanding advantages such as high performance, high reliability, high...[Details]
1 Introduction
Lijia'an Yellow River Diversion Culvert is a large gravity diversion gate in the lower reaches of the Yellow River. The Yellow River Diversion Culvert is located in Lijia'an Vi...[Details]
The circuit has overcharge protection, over-discharge protection, over-current protection and short-circuit protection functions. Its working principle is analyzed as follows:
1 Normal state
...[Details]
Single-chip microcomputer is the abbreviation of single-chip microcomputer. It is made by integrating CPU, ROM, RAM, TIMER/COUNTER and input/output interface (I/O) on a large-scale integrated circu...[Details]
As the automobile consumer market heats up, the safety performance of automobiles has attracted more attention from consumers. When driving at high speed, tire failure is the most worrying and diff...[Details]
0 Introduction
In microwave, radar, radio and television, and communication systems, the problem of coupling RF power is often encountered. A directional coupler is a directional power divide...[Details]
The use of power switches is complex and confusing to most electronic product designers, especially those who are not experts in power management. Power switches are increasingly being used by desi...[Details]
DSP and ARM Processors
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