As shown in the following 2 pictures, personal opinions1. In this case, the common-mode inductor should be effective, the board reflux is offset, RS485 communication is not grounded, and there is comm...
[i=s]This post was last edited by Feihong Haojie on 2019-11-14 17:58[/i]I found the above picture when I was looking for the absolute value circuit, and then I fell into deep thought.
The op amp input...
Fully integrated optical modules enable higher specification performancePhotoplethysmography (PPG) is a common technique for measuring blood oxygen saturation (SPO2) levels. A light transmitter is use...
[i=s]This post was last edited by lsj306 on 2018-10-19 18:21[/i] [align=left][b]I have been very busy this month and don't have much spare time to debug this GD32F350 board. This is my first time to u...
[i=s]This post was last edited by qwqwqw2088 on 2020-12-13 17:43[/i]What I want to analyze for you is a Xiaomi wireless charger and Bluetooth speaker. This phone not only supports 50W wired fast charg...
Abstract: In view of the shortcomings of the star-shaped optical fiber communication network in the substation automation system, a set of optical fiber self-healing ring network system structur...[Details]
A research team at the Swiss Federal Institute in Zurich has developed a rectifier for computer power applications that works almost as efficiently as the theoretical maximum limit.
The team l...[Details]
The biggest feature of the magnetic column level gauge is its intuitiveness. People can observe the liquid level in the tank conveniently and intuitively only by naked eye without other means. There ...[Details]
Recently, I got a USB-C to Lightning cable from a supplier that uses a non-Apple original MFi chip, but the performance of this cable is almost the same as the original cable, and it also supports Ap...[Details]
According to reports on December 28, multiple domestic media reported that Tesla’s Shanghai Gigafactory will implement production cuts in January next year, which also means that the factory’s produc...[Details]
Pulse circuits are circuits that are specifically used to generate electrical pulses and to amplify, transform and shape them. Pulse circuits are used in timers, alarms, electronic switches, electr...[Details]
On the morning of December 18, Apple seems to have become more aggressive in its marketing strategy. They recently cooperated with the short video social software TikTok to offer a four-month fr...[Details]
If universal electrification becomes a reality, the world will look like this. Satellite images of Italy before and after the COVID-19 pandemic (2 months apart). The significant reduction in activit...[Details]
Speaking of shaking, it is a word that makes photographers "shudder". It can be said that shaking is simply the biggest enemy of imaging equipment and photographers. But have you ever thought that...[Details]
For wearable devices and Internet of Things (IoT) products that are blooming everywhere, what kind of wireless technology is the product really needed? What challenges do engineers face when designin...[Details]
STC15 standard procedure, you can refer to it if necessary. The microcontroller source program is as follows: //The function of this program is to receive data from serial port 1, serial port 2, ...[Details]
On the evening of February 2, the official website of the Ministry of Science and Technology released the "Ethical Guidelines for Brain-Computer Interface Research" (hereinafter referred to as the "G...[Details]
Agilent E5071C Network Analyzer Repair 1. Model Agilent E5071C Network Analyzer 2. Fault: After the instrument is turned on, the traces are messy and the output power is out of tolerance; 3. Disa...[Details]
0 Introduction
Direct sequence spread spectrum communication is a type of spread spectrum communication technology. It has many advantages, such as strong anti-interference, anti-multipath...[Details]
On October 22, workers inspected the energy storage equipment area of the first phase of the 300 MW independent energy storage power station located in the Economic Development Zone of Longyao Count...[Details]