Recently, due to work needs, I started to get in touch with Bluetooth Mesh. I looked it up and found that Bluetooth Mesh was not long ago, probably in 2017, so it has been 4 years now. Although I am n...
April Reading Festival, good books will enlighten the world~hello, everyone~I am here to urge progress and encourage everyone to read good books. I recommend good books to you all, okhxyyo~Come and re...
I need help from all the experts: When I use the max6675 chip to read the thermocouple, I accidentally find that the temperature of the thermocouple is 20477 or 0. What is the reason? Has anyone encou...
Why is the lower arm PNP transistor of the H-bridge push-pull circuit often damaged, and the three legs of the transistor are directly short-circuited?...
As the title says, everyone is welcome to chat.
For example, for commonly used interfaces such as RS485, IIC, SPI, CAN, etc., do you know the common circuit structure and electrical level range, such ...
In the afternoon, they played against Serbia and won 3:0, securing the championship one round ahead of schedule. Thus, the Chinese women's volleyball team completed the feat of winning the world champ...
On August 6, Samsung Electronics Vice Chairman Lee Jae-yong visited Samsung Semiconductor's semiconductor packaging plant in Onyang, South Chungcheong Province, not long ago, just after Japan exclude...[Details]
The increase in the amount of glass used per car is gradually becoming a major trend in the automotive industry. According to information from China Report Network, in the 1950s, the amount of glass ...[Details]
Class A amplifiers can offset odd harmonic distortion, the final transistors always work within the linear range, and the transistors are always in the on state, so there are no problems such as cr...[Details]
1 Three-phase short circuit in infinite power supply system
First, the system diagram of the infinite power supply system is given, as shown in the figure below. A three-phase short circuit oc...[Details]
Can we use the resources of AT89C52 itself to determine whether the microcontroller is cold-starting or hot-starting in the software?
During normal operation, a flag is set in certain RAMs, and t...[Details]
An oscilloscope should be able to adapt to changing requirements. Some oscilloscopes can be expanded randomly:
○ Increase channel memory to analyze longer record lengths
○ Add measurement functio...[Details]
At present, the digital revolution and
the Internet
economy are sweeping the world. With the application of various information systems in various industries, the uninterruptible
power ...[Details]
A boost converter is often used to boost the voltage level to a high enough level to
bias and turn on
the LED
. The typical method of regulating the LED string current is to add a sense resis...[Details]
In early May, TSMC, the world's leading chip foundry, said that starting from 2023, chip foundry prices will increase by 5% to 8% depending on different processes. Subsequently, Samsung also seemed t...[Details]
On November 26, 2021, Texas Instruments (TI) and Great Wall Power Technology Co., Ltd. jointly held the Great Wall Power 2021 Technical Training Expert Lecture and the Launch Ceremony of the Texas ...[Details]
Calculation is an important part of the daily installation and maintenance practice of electricians. In view of the characteristics of the electrical industry, that is, some calculations are not re...[Details]
Micron Launches World's Most Advanced Client SSD Using 232-Layer NAND Technology
New Micron 2550 SSD brings extraordinary PCIe 4.0 performance and excellent user experience
...[Details]
I used the official function library and looked at the examples. The design method is basically the same: GPIO_Init(GPIOA, (GPIO_Pin_TypeDef)(GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6), GPIO_MODE_IN_PU_IT);...[Details]
1.
Distributed constant current technology
Distributed constant current means: an independent constant current source is set up at each parallel branch point to manage, maintain and con...[Details]
The BOE Wuhan 10.5-generation LCD production line visit and TV display technology tasting event with the theme of "Seeking the Source" was held in Wuhan. At a time when the current TV industry and ...[Details]
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