[i=s]This post was last edited by chenzhufly on 2020-1-21 16:21[/i]It’s time to summarize the year again. Goodbye 2019, hello 2020! I remember that the forum first organized such an event in 2010, and...
A Qisheng VCD player has normal playback function, but when there is no disc in the tray, the empty tray cannot be ejected when the eject button is pressed. Analysis and repair: Open the VCD cover and...
Hello everyone, I recently bought a bb black board to play with. When setting up the cross-compilation environment, I used the latest version of ti-sdk-am335x-evm-06.00.00.00-Linux-x86-Install.bin on ...
I used Wind River Workbench 3.0 to load the .out file. When running the test case, it kept reporting the error "Error: wrong number of interpreter tags found. History file (C:/Documents and Settings/A...
The "visible light" band that the human eye can see is actually only a very narrow section of the entire electromagnetic spectrum. Let's use the Fluke-279FC to take a look at what the world of infrare...
Nowadays, with the continuous development of semiconductor technology and the increasingly stringent requirements of electronic products for power consumption, major chip manufacturers generally adopt...
Emergency hand-held lamps powered by 6V maintenance-free batteries are widely used in rural areas. The charger used is a transformer step-down and single diode half-wave rectifier, and the charging...[Details]
When choosing a laptop battery, you should consider several factors, such as power, appearance, and quality.
Regarding power, we often see that a manufacturer uses values such as the number ...[Details]
1. Introduction to CIF Board
Fieldbus integration based on PC system
Whether it is a master or a slave, fieldbus has won unanimous praise in the field of PC-based automation. For more...[Details]
Introduction
In industrial control, speed measurement is often required. Generally, a contact tachometer is used. This tachometer must be placed against the center of the shaft to measure. It...[Details]
Analysis of the three core aspects of digital TV transmission standards
According to the differences in regionality, transmission method and modulation method, the transmission method needs to...[Details]
0 Introduction
In order to improve the automation control of shortwave transmitters, so that they can automatically process from far to near, the technicians here use the ICS system to complete the ...[Details]
Portable power applications are broad and varied. Products range from wireless sensor nodes with average power consumption of only a few microwatts to in-vehicle medical or data acquisition systems...[Details]
The most important components of new energy electric vehicles are power batteries, electric motors and energy conversion control systems. The power battery must achieve high performance such as fas...[Details]
1. Tips for charging UPS for the first time
After purchasing a new UPS, plug the UPS into the 220V mains power grid and charge it for at least 12 hours to ensure that the battery is fully char...[Details]
1. Introduction
Modern modular machine tools are equipped with a large number of electronic devices to meet the requirements of processing accuracy, processing speed, etc. If the conventional ...[Details]
1 Introduction
Lijia'an Yellow River Diversion Culvert is a large gravity diversion gate in the lower reaches of the Yellow River. The Yellow River Diversion Culvert is located in Lijia'an Vi...[Details]
In some motion control systems with simple control or low cost requirements, stepper motors are often used as actuators. The biggest advantage of stepper motors in such applications is that they ca...[Details]
The circuit has overcharge protection, over-discharge protection, over-current protection and short-circuit protection functions. Its working principle is analyzed as follows:
1 Normal state
...[Details]
High specific energy lithium/thionyl chloride (Li/SOCl2) batteries are widely used in multi-functional intelligent meters (such as smart meters, water meters, etc.) as real-time clocks and memory b...[Details]
High-definition video surveillance has developed rapidly in recent years, mainly to solve the problem of unclear "details" in normal monitoring. Some cities use high-definition television surveilla...[Details]
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