Beamforming is a mature technology used in cellular communications and other applications. Beamforming was originally developed based on various analog signal chain techniques and processes. Generally...
As shown in the attached picture, how do you understand that the voltage at point B increases as the voltage of the positive half-period signal increases? VD1 and VD2 are diodes, so how does the AC si...
I saw this kind of chat about circuit board anti-tampering in a group and thought it was quite interesting. I posted it to let my colleagues know and discuss itI heard there is a special silk screen i...
Aiming at the error of Hall sensor detecting motor current caused by temperature, a temperature error compensation system , and the system is simulated and tested experimentally. The results show that...
UHF and HF are both general technology categories, but each category has independent supporting protocols. HF is more consistent in the 13.56MHz frequency band, although there are many internation...[Details]
Obtaining real-time and reliable traffic information has always been a bottleneck problem in the development of intelligent transportation systems. The establishment of an intelligent transportatio...[Details]
Multi-parameter monitor is an important device in clinical nursing. It can monitor the patient's ECG, blood pressure, blood oxygen saturation, respiratory rate, pulse rate and temperature. At present,...[Details]
introduction
The data detected by various
measuring instruments
often need to be transferred to a PC for data processing and archiving, so as to make full use of the rich hardware an...[Details]
The discipline of HHCE (Home Health Care Engineering) is gradually entering people's lives as people pay more attention to health and telemedicine develops. It advocates the concept of "seeking m...[Details]
In the WTK22wtklibdevicesDefaultColorPhoneDefaultColorPhone.properties file in the WTK directory, there is a line touch_screen=false. Change it to true.
MIDP2.0 has three touch screen methods:...[Details]
1.AVI
The full name in English is: Audio Video Interleaved. People are very familiar with the AVI format, which is also very common in daily life, and the video quality is also very good. ...[Details]
0 Introduction
High-frequency switching power supplies have been widely used in the communication and low-voltage industries, and have gradually been used in power systems, due to their ad...[Details]
1 Introduction
With the continuous development and improvement of digital technology, digital image processing technology has been widely used in industry, military, biomedicine, telecom...[Details]
S3C44B0X is a cost-effective microprocessor launched by Samsung for embedded systems. It is a 16/32-bit RISC processor based on the ARM7TDMI core and has a main frequency of 66MHz. In order to redu...[Details]
0 Introduction
With the rapid development of digital technology, more and more circuit systems integrate A/D converters as a submodule into the system. For example, in portable data transm...[Details]
1 Introduction
In the development of the inverter, we chose the TMS320F240 chip as the main CPU. The TMS320F240 series was launched by TI in 1997 and is a 16-bit fixed-point digital signal...[Details]
It is commonplace today for consumers to use their mobile devices in ways that were unheard of just 10 years ago. Whether browsing the web at their favorite coffee shop, listening to stereo mus...[Details]
0 Introduction
In power electronics technology, the conversion of a DC voltage value into another fixed or adjustable voltage value through a power electronic converter is called DC-DC con...[Details]
Utilities are pushing to replace old electromechanical meters with microcontroller-based smart meters that, in addition to having intelligence and communication capabilities, are tamper-resistant.
...[Details]
DIY/Open Source Hardware
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