[i=s]This post was last edited by fish001 on 2020-7-21 22:51[/i]We introduce an active circuit, the operational amplifier, which has certain properties (high input resistance, low output resistance, a...
[i=s]This post was last edited by Eurasia32 on 2022-7-21 12:45[/i]Generally speaking, the communication interfaces that appear more frequently in microcontroller development are U(S)ART, SPI and I2C. ...
1. 4G/5GDTU/router, it is a wireless unlimited distance remote transmission method, it is based on the network of the three major operators for data transmission, supports public network transmission ...
"Wireless Communication Principles and Applications" (2nd Edition) is an authoritative and up-to-date textbook on wireless communication technology and system design. Since the first edition was publi...
With the development of technology, smart home products are also widely used. Smart sweeping robots are wireless sensing sweeping machines. They are usually disc-shaped and are wireless machines. T...[Details]
The taxi meter design is based on AT89C52 microcontroller, and uses AMPIRE28*64 LCD to display the taxi meter price, mileage and amount; the clock chip DS1302 is used to display the time and count wh...[Details]
In the era of electrification and intelligence, do cars have the attributes of consumer electronics products? There has been endless discussion about this issue. Supporters believe that once a car ...[Details]
Earlier, according to Jiwei.com, California Governor Gavin Newsom said last week that California will receive a refund of $247 million under an important protective mask transaction. The money was or...[Details]
The main frequency range of ECG signal is 0.05"100Hz, the amplitude is about 0"4mV, and the signal is very weak. Because ECG signal is usually mixed with other biological signals, and the electroma...[Details]
In the sodar system, the transmitter sends out acoustic signals of different frequencies in a directional manner, and then receives echo signals at different distances. The frequency deviation in the ...[Details]
On June 21, Twitter whistleblower @Teme pointed out that the Mate40 Pro will use a UTD screen designed specifically for folding screen and ultra-curved display phones. According to previous plans, ...[Details]
Preface
EEG (Electroencephalography) is a spontaneous potential activity generated by brain nerve activity and existing in the central nervous system, which contains rich brain activity in...[Details]
For new energy vehicles, the power battery is the heart of the vehicle. In terms of the application of power batteries, there are two mainstream technologies: ternary lithium and lithium iron phospha...[Details]
Typical wet gas is untreated wellhead gas or partially treated natural gas. The purpose of measuring wet natural gas is to obtain gas flow, hydrocarbon flow and water content within a certain accuracy...[Details]
The Honor V40 5G mobile phone was officially released, using a 120Hz high refresh screen, priced from 3599 yuan. At present, the Honor V40 light luxury version 5G mobile phone has appeared in ...[Details]
Convert 0~10V to 4~20MA voltage-current conversion circuit
Function of the circuit
When transmitting analog signals over long distances in the form of voltage, the signal source resistance or ...[Details]
0 Introduction
In recent years, Asymmetric Digital Subscriber Line (ADSL) has been widely used worldwide as a solution to the "last mile" problem of the network. In China, ADSL services have be...[Details]
In many signal acquisition systems, range switching is required. The most common method is to adjust the gain of the amplifier. In many cases, software is needed to control the amplifier gain, or the...[Details]
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