[i=s]This post was last edited by qwqwqw2088 on 2017-4-24 15:01[/i] Analysis of mobile phone RF circuit Analysis of typical functional modules in RF circuit, transceiver circuit, phase-locked loop cir...
at89s52 Changzhen is 11. 0592 eeprom is at24c02. When I write 10 1s to eeprom and then read it out, (hexadecimal) 31 20 31 20 31 20 one is right and one is wrong. It is very regular. Please help. What...
The screen printing process of the circuit board can be divided into 9 parts and 56 variables, which requires everyone to have the correct operating procedures or the following phenomena will occur. N...
[size=14px][size=5][color=#ffa500][url=https://www.eeworld.com.cn/a17396]Japanese Illustrated Book Series: Illustrated Internet of Things[/url][/color][/size][/size] [font=微软雅黑][size=14px][size=4]Japa...
I'm going to explain what wince is. Windows 98, Windows 95, and Windows ME are based on the 9X kernel, while Windows NT, Windows 2000, Windows XP, and Windows Vista are based on the NT kernel. Is winc...
Designers use PSpice primarily to simulate analog circuits. However, it can also be used to simulate digital filters. The main components in a digital filter are delay elements, adders, and multipl...[Details]
In some applications, such as data loggers, it is desirable to have multiplexed analog outputs. When only a single output is active at a time, a voltage-output DAC">digital-to-analog converter (DAC) a...[Details]
A biped robot joint constructed by pneumatic artificial muscles is introduced. The joint uses the flexible characteristics of pneumatic artificial muscles to effectively control the impact of the la...[Details]
Designers of hearing aids have stringent requirements. Hearing aids must be small enough to fit in or behind the ear, operate on ultra-low power, and be free of noise or distortion. To meet these requ...[Details]
The particularity of portable medical devices determines that they should be user-friendly, must work in a sterile environment, and occupy little space and consume low energy.
At the same time, por...[Details]
This issue will briefly introduce the test related to spectrum - occupied bandwidth.
Definition: Occupied bandwidth refers to the bandwidth corresponding to 99% of the total transmitted power, cent...[Details]
Today's mobile phone production testing faces an increasingly complex environment, with challenges of multiple frequency bands and multiple standards, pressure on production test speed, and pressur...[Details]
As microcontrollers become less expensive and more powerful, electrical designers are finding it more cost-effective to use multiple small controllers in both single-board and multi-board systems. ...[Details]
Broadband services supporting triple play voice, video and data are evolving for first mile customers (small businesses and homes). A key factor in this FTTx evolution is GPON (Gigabit Passive Opti...[Details]
In order to ensure the reliability of the driving assistance system and the basic functions of the car, and also to leave suitable connection interfaces for the car's future new entertainment and ...[Details]
In a Class D audio power amplifier, the preamplifier is a relatively important module. It is located at the front of the entire topology and completes the processing of the input signal source,...[Details]
This article will discuss a common problem in wireless mobile data reception.
Problems facing RF receivers
The common problem faced by RF receivers is that the same hardware must be used ...[Details]
Introduction
Wireless operators are driving demand for broadband and data rates by offering enhanced data services to increase average revenue per user (ARPU). The need to provide users with ...[Details]
Fetal monitoring is an important means to ensure the safety of perinatal mothers and fetuses and achieve eugenics. Intelligent fetal monitoring is a monitoring method that analyzes the health stat...[Details]
AD604 is a product of Analog Devices (AD). Compared with similar products, AD604 has the characteristics of ultra-low noise, high precision, continuously adjustable gain, and the decibel (dB...[Details]
Test/Measurement
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