Flower watering indicator
Author: Zhang Zezhong
Flowers are loved by everyone. Many people like to grow flowers. The flowers they just bought are gorgeous and colorful, but after a few days, the flowe
Hello everyone, I used 8051 and CP2201 to make an Ethernet interface. During the initialization of the CP2201 physical layer, the value of INT1RD is always 0X31 regardless of whether it is connected o
In many cases, we have to talk about anti-interference. Where does the interference come from? I personally think that 30% of the devices that are interfered with are caused by power supply interferen
Currently, we need to make a device that works in a -30℃ environment. According to the manual, all components meet the temperature requirements, but does the circuit design meet the temperature requir
How to understand the alarm performance of 14 or more half-cycles of arc faults in 1s in GB14287.4 "Electrical Fire Monitoring System Part 4: Arc Fault Detector"? How to understand the alarm performan