29. What is the requirement for phase noise at 1k offset , 10kHz offset, and 100kHzoffset for GSM handset?Answer: For GSM handset RX it has several architectures to implement:Superheterodyne,near zero...
The evaluation has finally come to an end. In order to achieve the goal of uploading indoor temperature, humidity and atmospheric pressure data to the cloud based on the Essence NB-IoT development boa...
When the servo drive system is loaded, the current waveform follows very well, the current is saturated, and the speed waveform oscillates when it starts (there are two waveforms, one from 0 to 2000 r...
Continued from the previous article~~~~~
Continue the decoupling/bypass journey~~~~~~~·
This is Murata's decoupling application manual, which is quite comprehensive, explaining decoupling applications...
Are there any seniors who are familiar with Beidou chips and GPS chips who can recommend some relatively stable, low-power, and low-voltage Beidou chips and GPS chips?...
travis: Add BLE submodules to ESP32 IDF4 build.
esp32/boards: Enable BLE by default when building with IDF 4.x.
esp32: Implement BLE using Nimble from IDF 4.x....
Today, OPPO officially launched the OPPO Reno6 series of mobile phones in Qinhuangdao, which supports AI radiant makeup and radiant light spot portrait video. The OPPO Reno6 series offers OPPO Reno...[Details]
The voltage reactive power controller is usually composed of a single-chip microcomputer system, which integrates data acquisition, data processing, control judgment and control output. This make...[Details]
DDR originated from SDRAM. Strictly speaking, it should be called DDR SDRAM. DDR SDRAM is the abbreviation of Double Data Rate SDRAM, which means double data rate synchronous dynamic random access me...[Details]
On March 1, Best, a full-solution provider of shared energy storage power supplies, held a "Shared Energy Storage Power Supply Global Launch Conference" in Shenzhen. Best's Chairman Pan Liangchun, ...[Details]
The function of the A/D converter is to sample the analog input signal to obtain a digital signal that can be processed by the computer. The circuit diagram of the A/D input module of the development...[Details]
Introduction The Internet of Things refers to the combination of various information sensing devices, such as radio frequency identification devices, infrared sensors, global positioning systems, l...[Details]
Recently, the Ministry of Transport announced the results of the 2022 Transportation Major Scientific and Technological Innovation Achievements Database (hereinafter referred to as the Achievements D...[Details]
Alpha testing is conducted by a user in a development environment, or by internal users in a company in a
simulated
actual operating environment. The purpose of alpha testing is to evaluate the F...[Details]
During the interrupt service subroutine, only the return address PC is automatically pushed into the stack, and the contents of other registers must be figured out by ourselves according to the needs...[Details]
OFweek Cup · OFweek 2023 China
Robot
Industry Annual Selection (abbreviated as OFweek Robot Awards 2023) is jointly organized by OFweek, China's high-tech industry portal, and its authorita...[Details]
An oscilloscope is an electronic measuring instrument with a wide range of uses. It can transform invisible electrical signals into visible images, making it easier for people to study the changing ...[Details]
How to select gas flow meter There are many types of gas flow meters, and different gas flow meters are suitable for different industries. Today, I will share with you the selection principles of...[Details]
If you have a lot of money, you can build as much as you want! Loss of 17.23 billion in 3 years. Even with the support of Tencent, it will be difficult for NIO to "spend huge amounts of money" ag...[Details]
There are two types of sensitivity: AC and DC. The unit is ohm/volt. The sensitivity is actually the internal resistance of the surface when measuring voltage. For example, a multimeter with a DC sen...[Details]
On October 23, South Korean automaker KG Mobility announced on October 21 that it has established a strategic partnership with Chery Automobile on future mobility technologies. According to the agr...[Details]