Why can passive filters filter?
The essence of a filter's ability to filter is to select frequencies by causing reflections and losses through the construction of specific impedance characteristics.
F...
The chip resistors on the circuit board are marked with resistance values, but the chip ceramic capacitors do not have any markings.The capacitor installed on the circuit board is suspected to be dama...
1. I looked at the examples and found that there is no FFT example. Does this DSP28335 not support FFT? By the way, the C2000 series has the C2000 ware library. It is much more convenient, but I am no...
The standard bell on the bicycle looks ordinary. I bought a small 3V horn online. It is very cheap and easy to use. It only needs to be powered and does not need to be driven.The speaker modification ...
The most mainstream QI wireless charging schematic in 2022
In 2022, when it comes to wireless charging, everyone is familiar with it. Since the release of Apple 8, consumers have had a preliminary und...
Introduction to various video signal formats and terminals
The readers of this magazine all have a certain basic knowledge of electronics. Video signals are the display signals we are most...[Details]
Broadband Matching Design of RF Power Amplifier
在很多远程通信、雷达或测试系统中，要求发射机功放工作在非常宽的频率范围。例如，工作于多个倍频程甚至于几十个倍频程。这就需要对射频功放进行宽带匹配设计，宽带功放具有一些显著的优点，它不需要调谐谐振电路，可实现快速频率捷变或发射宽的多模信号频谱。宽带匹配是宽带阻抗匹配的简称，是宽带射频功放以及最大功率...[Details]
English abbreviation ROM. The data stored in ROM is generally written in advance before being installed in the whole machine. It can only be read out during the operation of the whole machine, and ...[Details]
The analysis of the ARM Linux boot process is what I want to introduce. The portability of embedded Linux allows us to see it in various electronic products. The Linux boot process is also different ...[Details]
One of the major factors restricting the development of smart phones is the battery. For so many years, it can be said that the battery of mobile phones has been stagnant. The performance of mobile...[Details]
Circuit Function and Advantages
The circuit shown in Figure 1 is a multichannel, flexible analog output solution using only two analog components that meets most requirements for multichannel I/O c...[Details]
According to the "Russian Satellite News Agency", India's anti-financial crime agency issued formal notices to Xiaomi's Indian branch, company leaders and three banks within the framework of the inve...[Details]
Voice-controlled interfaces such as Amazon Alexa, Apple Siri, and Google Home rely on always-on voice capture to detect wake words or phrases used to initiate complex voice processing algorithms th...[Details]
Recently, CATL's first overseas factory in Thuringia, Germany, achieved mass production of lithium-ion battery cells as scheduled, marking a milestone breakthrough in CATL's global development....[Details]
Researchers want to give cars, planes and drones spider-like perception capabilities. They want to equip autonomous machines with sensors that mimic nature. According to a paper published in ACS Nano...[Details]
According to the current reliable news, Apple's annual flagship iPhone 12 series will still provide four models this fall, including iPhone 12, iPhone 12Max, iPhone 12 Pro, and iPhone 12 Pro Max. Now...[Details]
#include
#define PORT P2
sbit RS = P3^5; //1602 data/instruction selection control line
sbit RW = P3^6; //1602 read/write control line
sbit EN = P3^7; //1602 enable control line
unsigned ...[Details]
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On January 13, Beijing Jingcheng Mechanical and Electrical held a signing ...[Details]
After ten years of hard work, the industrialization of silicon-based anodes has reached a critical "matching point". In the second half of 2023, silicon-based anodes, as upstream materials for lith...[Details]
The circuit monitors a bipolar power supply with user-defined positive and negative reset thresholds. When either voltage drops below (usually toward 0V) the corresponding threshold, the circuit ge...[Details]
RF/Wirelessly
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