[color=#222222][backcolor=rgb(238, 238, 238)][font=sans-serif]Lu Jie[/font][/backcolor][/color] [color=#222222][backcolor=rgb(238, 238, 238)][font=sans-serif]Fresh graduate | Male | 22 years old (June...
Since I came into contact with op amps, I have paid close attention to the SR, G, and GBP (GBW) of op amps. These three parameters are generally what I pay attention to when using op amps, but I have ...
Haha, there must be many friends from Zhengzhou in the forum. Let's count them. I'm a beginner. The reason why I want to count the friends from Zhengzhou is mainly for the convenience of asking for ad...
I downloaded Tornado2.2 for Pentium on eMule. After installing it, it always displays "Lecensing Failed..." when I start Tornado. However, I have put lecense.dat in c:\flexlm and set the environment v...
I installed SQL CE 2.0 a few days ago and was going to create a database in SQL CE 2.0. So I went to Start-Programs to open SQL CE 2.0 and found that there was only the SQL CE 2.0 help document. What'...
I encountered two problems in learning ucos that I couldn't figure out: 1. How to handle peripheral interrupts in ucos, such as serial ports 2. How to use global variables in ucos...
introduction
my country has a vast territory and a large population. The scale of housing construction is huge, and the amount of residential construction is large and wide. It is still on t...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
0 Introduction
With the development of society, people pay more and more attention to security work. Monitoring products have been used in various fields instead of being used only in importan...[Details]
1 Introduction
PROFIBUS is an international, open, and manufacturer-independent fieldbus standard. It is widely used in manufacturing automation, process industry automation, and automatio...[Details]
12v Lead Acid batteries used in trucks, cars, RVs and uninterruptible power supplies are usually rated at 12V. This circuit monitors the battery, the charge and discharge curves, gives the cu...[Details]
Among the many members of the single-chip microcomputer family, the MCS-51 series of single-chip microcomputers has occupied the main market of industrial measurement and control and automation eng...[Details]
From the previous section, we have learned that the timer/counter in the microcontroller can have multiple uses, so how can I make them work for the purpose I need? This requires setting the timer/...[Details]
Printed circuit boards ( PCBs
)
are used in most electrical products
. If a PCB has low
insulation resistance
(IR), the performance of the circuits on the PCB will be greatly reduced...[Details]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
The serial interface real-time clock chip DS1302 launched by Dallas Company in the United States can trickle charge the backup battery of the clock chip. Due to the main features of the chip such a...[Details]
0 Introduction
Under normal circumstances, the three-phase power in the power system is symmetrical, and they meet certain amplitude and phase conditions; but when the load changes, the syst...[Details]
With the rapid development of cities and the improvement of citizens' living standards, the number of various vehicles in cities is growing, and the demand for parking spaces in major commercial an...[Details]
Traditional
virtual instruments
consist of a data acquisition
board
based on PCI bus and
corresponding software. However, with
the rapid development of
computer
network techno...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
introduction
Steam turbines are driven by high-temperature and high-pressure steam generated by boilers to run at high speed. They are key power equipment in thermal power plants. The emergenc...[Details]