I recently encountered a problem with 485 communication. I need help from all the experts. The situation is as follows: I use a Kunlun touch screen to read a 24V powered, 485 output temperature and hu...
Hello everyone~ When I was reading an article, I saw the mention of hot ground and cold ground. I wanted to ask everyone, what is the difference between the two? When I was in school, I knew about dig...
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My simulation uses a constant current IC to control the LED to light up. The constant current can be an LDO circuit or a DCDC circuit. Of course, in actual situations, the connection between each LED ...
Most of the semiconductors we use now are silicon-based circuits, which have been around for 60 years. For many years, they have been developing in accordance with Moore's Law, which is a two-year mi...[Details]
On June 10, Chen Jin, general manager of Lenovo China's mobile phone business department, announced that Lenovo Legion gaming phone will be launched soon. Chen Jin said that Lenovo's Savior...[Details]
ARM processors have 7 operating modes:
User mode (usr) -- normal program execution mode
|-- |-- Fast interrupt mode (fiq) -- used for high-speed da...[Details]
The analog multimeter consists of three parts: the meter head, the measuring circuit and the switching switch. There are usually four scale lines on the multimeter head, indicating the resistance,...[Details]
Power factor assessment and power adjustment charges are effective means to ensure the safe and efficient operation of the power grid, and are institutional guarantees to encourage users to adjust ...[Details]
With the continuous improvement of the degree of automation, the requirements for remote collection and transmission of field data are also increasing. Today, when telephone communication networks ...[Details]
my country is a major coal producer in the world, accounting for 35% of the world's coal output. However, my country is also a country with a high incidence of mining accidents, accounting for 80% ...[Details]
How to track and quickly and effectively compensate reactive power plays an important role in the stable operation of the power system, improving power quality, reducing line losses, and achieving ...[Details]
Principle analysis: Why do we need to short-circuit the two wires P1 and P12? According to the system and chip manual provided by the LPC812 development board, I want to conduct a simulation experi...[Details]
How many PWM waves can a timer capture at most at the same time?
I only need to get the high level width of PWM, and the frequency of PWM is 50HZ.
The STM32 timer has two capture modes:
PWM input...[Details]
The inverter setting menu is divided into the first-level menu, the second-level menu, etc., and the parameters are behind the menu. The access to the first-level menu of the Altivar31 inverter is ...[Details]
An oscilloscope is an electronic measuring instrument with a wide range of uses. It can transform invisible electrical signals into visible images, making it easier for people to study the changing ...[Details]
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This paper proposes a method to use SDHC card as an external storage device of CC2530 to realize data storage. SDHC card has the characteristics of small size and large storage ...[Details]
Industrial controllers, also known as industrial control computers or industrial PCs, are computer systems designed for industrial environments. They are often used in industrial applications such ...[Details]