One of my projects requires 8-way regulated power supply, 4V to 5V is fine, but it must be stable and not fluctuate too much, and each way has a load of about 5mA. I want to use a reference source chi...
I use STC89C54RD+ MCU as control unit, plus a 62256, LED is 32x16 module, 16-bit scan, two DM13C as driver, serial data input, 16-bit parallel output, address decoding uses 74HC373 and 74HC138. Data i...
I wish you all a happy new year! The embedded section is getting more and more prosperous! In the new year, we still have to study hard and keep working hard:) PS: It is said that 3 small pants can po...
[align=left][color=rgb(0, 0, 0)][font=Arial, 微软雅黑,]Resistors are one of the most commonly used devices in electronic products. Basically, as long as it is an electronic product, there will be resistor...
I developed a wap website, but there are always problems when I access it on a mobile phone with win ce 5.0 system, not windows mobile system. Sometimes the page parameters cannot be passed, sometimes...
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[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]
At very low temperatures, certain metals and alloys lose their resistance to electric
current
and become
superconductors
. Two parameters that are often measured are the transition ...[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]
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]
During the operation of electronic equipment,
memory
failure or failure will not only lead to economic losses, but also may lead to catastrophic consequences. Therefore, memory testing has ...[Details]
According to a survey by the International Energy Agency, Asia and Australia used 1.65 trillion liters of oil for energy in 2004. The survey also showed that since 1990, the demand for oil has been...[Details]
In the process of designing electronic products, we usually control the cost of the designed products, always try to simplify the circuit, reduce the components, and simplify the installation process....[Details]
Abstract Based on the overview of the hardware design of digital synthesis sweeper, this paper describes a USB2.0 interface design based on ISP1362, including the hardware structure design of USB i...[Details]
Communication protocol: The first byte, MSB is 1, which is the first byte mark, the second byte, MSB is 0, which is the non-first byte mark, and so on... The last byte is the XOR checksum of the la...[Details]
0 Introduction
A wireless sensor network is a type of RGS system (remote ground sensor system). It is a detection system that uses a variety of sensors as comprehensive intelligence collection...[Details]
The treatment capacity of a sewage treatment plant in Shanghai is 10,000 m³/day, and the number of monitoring points is not large. The selection of S7-300 PLC plus Beijing Dingshi DS300B distributed I...[Details]
Introduction
While computer, Internet and communication technologies are developing rapidly, embedded system development technology has also achieved rapid development. This is not only reflect...[Details]
I. Introduction
With the improvement of people's living standards, the problem of how to achieve home anti-theft has become particularly prominent. Traditional mechanical locks are often pried...[Details]
An important reason for the low life of LED driver power supply is that the life of the aluminum electrolytic capacitor required by the driver power supply is insufficient. The main reason is that ...[Details]