Can point-to-point information exchange be achieved between two GPRS modules after they are online? How can the communication between the two modules be achieved? Even through a transfer server... I a...
Abstract: In order to make the switching power supply safe and reliable in harsh environments and sudden fault conditions, several practical protection circuits are proposed, and the working principle...
[color=#252525]Routine program of RC522 written by MSP430 microcontroller[/color] [list=1] [*] // [*]//================================================================================// [*] [*]#includ...
Currently, the demo is simulated based on the PC platform. Since the memory of the development board is too small, only the basic transplantation is performed. Screen1 is a function similar to the rot...
It seems that red water will flow out of the tap water pipes only when the pipes are rusted, and the rest is that colored drinks will flow out of the water outlet of the beverage machine. In other cas...
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]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
Direct digital frequency synthesis (DDS) has fast frequency switching and modulation capabilities and is widely used. However, when low power consumption and low cost are the main considerations, D...[Details]
0 Introduction
In the design and construction of communication systems,
communication power supply
is called the heart of the communication system. The power supply system will dire...[Details]
1. Introduction
AS-Interface bus technology is an intelligent network that uses a single cable to connect sensors and actuators to controllers, transmit data, and provide power. It can be used...[Details]
1. Introduction
Due to the good programmability and superior performance of FPGA, the number of embedded systems using FPGA chips in LCD splicing screens is increasing rapidly, especially in t...[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]
Abstract Aiming at the harm caused by mobile phone microwave radiation to human body and the incompatibility between mobile communication network and fixed-line network, a PSTN voice gateway using ...[Details]
New processors in laptops place higher demands on power supplies: higher current, faster response to load steps, and faster adjustment of output voltage after the voltage identification (VID) code ...[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]
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]
Overview
Modern
amplifier RF instruments
have impressive measurement capabilities and accuracy far exceeding their predecessors. However, these instruments cannot reach their full pote...[Details]
There are multiple methods for measuring the temperature of electrical contacts in power transmission and distribution. The more traditional methods include temperature measurement wax sheet method...[Details]
Preface
For a new antenna, we usually care about its
three main performance indicators:
standing wave
coefficient, gain and radiation pattern. In a suitable microwave darkroom, these th...[Details]
China
has rich
wind energy
resources and huge potential for development. According to relevant data, China's land wind energy resources can be developed to 2.38 billion kilowatts, and of...[Details]
Embedded System
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