I need to design a frequency meter. I have almost finished other parts, but I still can't figure out the frequency control. Requirements: It can measure the frequency of 0-999999, the gate circuit clo...
Judging from the questions in the previous years' electrical competitions, the frequency of measurement questions is getting higher and higher, and the mechanical systems controlled by control questio...
Abstract: In conjunction with the development of my country's spaceborne SAR system, the Institute of Electronics of the Chinese Academy of Sciences has successfully developed a high-precision spacebo...
As shown in the picture, I want to delete this V+ line, but after selecting and pressing Delete, AD09 dies. This happens every time. I have almost deleted other parts of this board, but when I delete ...
[i=s]This post was last edited by damiaa on 2014-10-19 17:22[/i] [size=5]R7F0C802X program trial and experience[/size]Let me repeat the example in the previous article:The program is mainly composed o...
Remote keyless entry (RKE) systems have become popular with users, with more than 80% of new cars in North America and more than 70% in Europe equipped with RKE systems. In addition to the obvious ...[Details]
Do you often have to add brake fluid to your car's brakes? The fact that you need to pump out the brake fluid to make sure there is no gas in the brake fluid line may not be done by the car owner h...[Details]
As cellular phones become more advanced, the power consumption of the system during operation and the power consumption during standby are also increasing. Therefore, the power management design of...[Details]
For a long time, due to the limitation of hardware conditions, the display devices of traditional small handheld devices such as PDA are usually monochrome LCD, and the user interface is very simpl...[Details]
Editor's note: In order to help technicians or engineers who have knowledge of PIC microcontroller assembly language quickly master the method of using C language to program PIC microcontrollers, t...[Details]
LED lamps and bulbs are now rapidly replacing incandescent, halogen and CFL (compact fluorescent lamp) light sources in many general lighting applications. Flyback DC/DC converters are the power su...[Details]
At present, how various communication technologies will evolve after 3G is a focus of great concern in the industry. Especially for TD-SCDMA, whether it can achieve smooth evolution to the next gen...[Details]
Abstract: In order to realize wireless automatic alarm and monitoring of major safety places, based on the basic principle of pyroelectric infrared sensing, a detector for receiving infrared radia...[Details]
Among the uses of electrical energy, lighting accounts for a considerable proportion. Compared with the earlier ordinary incandescent lamps, the fluorescent lamps and energy-saving lamps we commonl...[Details]
Movpower is a portable power bank. It can charge most mobile phones and digital products, such as digital cameras, PDAs, and mobile phones such as Apple, iPod, Blackberry, Motorola, Samsung, Nokia,...[Details]
In order to prevent the lithium battery from being damaged by abnormal conditions such as overcharge, over discharge, and overcurrent, a lithium battery protection device is usually used to prevent...[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]
With the popularity of digital appliances, rechargeable batteries can be seen everywhere in people's daily lives and have become one of the indispensable daily necessities.
This article gives ...[Details]
0 Introduction
PROFIBUS is an open digital communication system with a wide range of applications, which has been included in the international standards IEC 61158 and IEC 61784. Since the gen...[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]
Embedded System
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