[font=黑体][size=5]Requirements: Do not use a transformer, use discrete components, input 220V AC power, output DC 4V or so. Used to drive two 1W LEDs, the current is about 800MA![/size][/font] [font=黑体...
[img]http://i3.6.cn/cvbnm/86/b0/eb/1e1b36815199b89aa72af13b76ba12ad.jpg[/img] The source code is automatically generated by VS2005: // Win32Project2.cpp : Defines the entry point for the application. ...
This line in this PCB interferes with itself. The left and right spacing is 11.38mil, so there shouldn't be any problems. Does anyone know the reason? I have obsessive-compulsive disorder and I'm upse...
I designed a circuit that uses a 7.4V lithium battery, but the working voltage is 5V. The current of this circuit is about 150ma. What kind of conversion chip should I use? The main consideration is t...
After stm32 has been erased and written many times, it has been downloaded about 2000 times. Will the above situation occur? When the temperature feels cold, everything is normal; but when the tempera...
I am trying to enter the embedded field, so I want to buy a development board for learning. Of course, it would be best if I can use it at work. I checked online and saw that TE2410 and TE2440 have go...
At present, the development of wireless power supply technology for electric vehicles (EVs) is becoming more and more active. In 2012, Volvo of Sweden established Volvo Technology Japan in Tokyo as...[Details]
1. Introduction
RFID (radio frequency identification) is a non-contact automatic identification technology that emerged in the 1990s. It uses the characteristics of radio frequency signal prop...[Details]
Automotive applications are particularly sensitive to EMI events, which are unavoidable in a noisy electrical environment consisting of a central battery, bundled wiring harnesses, various inductiv...[Details]
System design is a complex process. It is not enough to just use ICs. There are many details to consider. This article uses a high-fidelity music playback system as an example to introduce how to s...[Details]
In order to highlight the concept of "energy saving and environmental protection" of intelligent buildings, solar street lights are designed for intelligent communities. The inclination and capacit...[Details]
Electronic systems are located at different points on the automotive power bus and therefore often need to operate under very stringent power requirements. These include load dump, cold crank, very lo...[Details]
Although it is relatively easy to check the stability of a simple amplifier at lower frequencies, it may be much more difficult to evaluate the stability of a more complex circuit. This artic...[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]
1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
1. Introduction
Testing the temperature of steel billets before rolling is an important measure to ensure the quality of steel. Traditional manual testing is difficult to ensure product qu...[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]
According to the Industrial Technology Research Institute of Taiwan, due to factors such as the oil crisis and global warming, the issues of energy conservation and environmental protection have at...[Details]
At present, a large number of cooling tower fans, speed fans and special fans are in use in petroleum, chemical, pharmaceutical, metallurgical and other enterprises. Some fans have no monitoring in...[Details]
In the "digital pressure measurement" experimental device of applied physics, the subject technical knowledge of analog circuits, digital circuits, sensors and single-chip microcomputers is used. In o...[Details]