http://www.hampoo.comIn high-speed design, the characteristic impedance of controlled impedance boards and lines troubles many Chinese engineers. This article introduces the basic properties, calculat...
Depending on how the inductor L and the capacitor C are connected in the circuit, there are two types of LC resonant circuits, LC parallel resonant circuit and LC series resonant circuit.
LC parallel ...
Dear experts: My database is named test.sdf and there is a user table in it, but an exception occurs when SqlCeDataReader dr = cmd.ExecuteReader(); The program is as follows: string constr="Data Sourc...
[i=s]This post was last edited by Aguilera on 2019-2-13 22:01[/i] [size=4][color=#000000][backcolor=white]Hotspot Technology[/backcolor][/color][/size] [size=4][color=#000000][backcolor=white] (1)4G[/...
#define RAM_CONFIG_BASE 0x400FB200 #define RAM_O_MSXRTESTINIT1 0x00000050 After running HWREG(RAM_CONFIG_BASE + RAM_O_MSXRTESTINIT1) |= 0x1, why is the value of address 0x400fb250 still 0, but the val...
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]
With the promotion of the construction of intelligent communities in the country, anti-theft systems have become essential equipment for intelligent communities. Especially in recent years, the urg...[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]
There are three types of mobile TV: one is based on analog TV broadcasting network, another is based on mobile communication network, and the other is based on digital broadcasting network. The f...[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]
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]
Toyohashi University of Technology demonstrated electric field coupled wireless power supply technology using life-size car tires and roads at the wireless technology exhibition "Wireless Technolog...[Details]
1 Introduction
There have been many studies on the detection and protection of power grid short circuit and line fault. The short circuit, overload and overvoltage protectors on the market have ...[Details]
Single-chip microcomputers are widely used because of their small size, powerful functions and low price. This article introduces the method of designing a micro electronic piano using the AT89C51 sin...[Details]
1. When the slip speed regulating motor is undergoing frequency conversion and energy saving transformation, the original excitation box (referred to as the speed regulating box) and the original s...[Details]
We know that the inverter consists of two parts: the main circuit and the control circuit. Due to the nonlinearity of the main circuit (switching action), the inverter itself is a source of harmoni...[Details]
With the rapid development of the national economy, lifting and hoisting operations are used more and more frequently and widely in various fields of economic construction. China has continuously expl...[Details]
The installation locations of DC-DC converters are relatively scattered. DC-DC converters can be found on the power board, main board, logic control board and other circuit boards of PDP color TVs....[Details]
Introduction
my country's rapid economic growth is mainly due to the development of manufacturing and the acceleration of urbanization. However, urbanization cannot be achieved at the expense ...[Details]
IntroductionLED
billboards are a kind of information display terminal for the public, which has a wide range of civil and commercial values. However, the information displayed on most LED bil...[Details]
PCB Design
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