The testability of product design (De sign For Testability. OFT) is also the main content of product manufacturability. From the production perspective, it is also one of the process characteristics o...
As shown in the figure, IN is +5V, which is used by the secondary side of the transformer to feed back to the power IC. Assuming that IN is greater than 5V, TL431 will be turned on, causing the K pole...
After installation (there is a red control in SYSTEM), put the SPCOMM control into the form, compile and pop up the SPCOMM unit file without writing a line of code. It fails to compile, as if a code u...
The INT0 interrupt of 51 has always been normal, but every time a function that generates a rectangular wave is called, the microcontroller does not enter the interrupt program even if there is an int...
I recently bought a few ATMEL memory chips from a merchant. I want 128K, but I always feel that it is not as big as the 32K I originally wanted. The chip I have now says: ATMEL316 24C256N SI27A. The b...
As for crystal oscillators, I have checked many manufacturers, and their worst accuracy is ≤50PPM, which means that there is only an error of 1 pulse in 20,000 pulses. For a 32.768kHz crystal oscillat...
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
Introduction
Power subsystems are becoming more and more integrated into the overall system. Power systems have moved from being separate "essential dangerous devices" to being monitorable...[Details]
General LED lighting has a current limiting resistor in the driving circuit, and the power consumed by the resistor has nothing to do with the LED light emission. In order to improve efficiency, a...[Details]
Nippon Electric Works and Volvo Technology Japan have developed a wireless power supply system for electric vehicles (EVs). Using this system, the two companies have successfully conducted an exper...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[Details]
1. Disadvantages of choosing too high a voltage level
Choosing too high a voltage level will result in too high an investment and a long payback period. As the voltage level increases, the...[Details]
Liquid crystal display (LCD) panels have a wide range of applications, from small portable electronic devices to large fixed devices, including digital cameras, laptops, personal data assistants, d...[Details]
introduction
At present, measuring instruments are developing towards networking, and each individual embedded instrument will become a node on the Internet. This system realizes the network...[Details]
Introduction
As the country increases its efforts to control the atmospheric environment, motorcycle emission regulations will become stricter year by year, and motorcycles that do not meet the...[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
Wireless Sensor Network (WSN) monitors the target by deploying a large number of sensor nodes in the target area. WSN realizes the positioning and tracking of the target, determi...[Details]
When the so-called "copycat phones" that flood the domestic mobile phone market move towards large screens, stereo amplifiers, touch controls, and even GPS navigation and mobile TV, the homogeneity...[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
Power supply ripple will interfere with the normal operation of electronic equipment, causing malfunctions such as computer crashes, data processing errors and control system fa...[Details]
PCB Design
京公网安备 11010802033920号
EEWORLD
