How to accurately judge the quality of the power IC chip in the circuit in daily circuit maintenance work is an important part of repairing TV, audio and video equipment. If the judgment is inaccurate...
The input frequency is 1k square wave entering the low-pass filter, filtering out the waveform shown in the figure. The cutoff frequency of the low-pass filter is 1k. Why does this distortion occur?...
Long distance, effective identification distance is adjustable from 0m to 80m Provide standard thick card and special-shaped package Standard thick card size: 86 x 54 x 5mm Operating frequency: 2.4GHz...
HBase command line tool, the simplest interface, suitable for HBase management and use. You can use shell commands to query the details of the data in HBase. After installing HBase, start the hadoop c...
Circuit Analysis:
1. This circuit is a row selection circuit, which is used to select and drive the corresponding row. The 4953 chip plays the role of amplification.
2. This circuit is a ...[Details]
As early as 2017, Apple applied for a patent for Mac Face ID. At that time, we didn't know what the facial recognition feature on the iPhone X was called. Now, this patent applied for in 2017 has fin...[Details]
Recently, the 15th Plenary Session of the 12th Beijing Municipal Committee reviewed the "Proposal of the Beijing Municipal Committee of the Communist Party of China on Formulating the 14th Five-Year ...[Details]
A key competition has just been decided at INTERSPEECH 2021, the world's top voice conference. Tencent, Northwestern Polytechnical University, CMU and other domestic and foreign institutions are t...[Details]
Stock Code: 300376 Stock Name: Easy Announcement No.: 2018-030
Announcement of Eastar Group Co., Ltd. on the company's photovoltaic inverter equipment winning the bid for the State Grid Co...[Details]
On July 10, the reporter learned from the 200MW/800MWh new energy storage project construction promotion meeting jointly held by Pingdingshan High-tech Zone and Henan Newway Technology Co., Ltd. that ...[Details]
The Android x86 project has finally been upgraded to the underlying Android 11. This innovation has been achieved in the latest Bliss OS 14 version. Of course, the version is currently in th...[Details]
The ZS3089SL product is a switching power supply chip independently developed and produced by Shenzhen Liyuan Micro Technology. The product adopts a nationally produced design. Liyuan Micro owns al...[Details]
The motor's duty system indicates the motor's allowable cycle time under different loads. The motor's duty system is: S1~S10;
in:
(1) S1 duty: continuous duty, running under constant load...[Details]
According to foreign media GSMArena, the full specifications of the Samsung Galaxy M52 5G mobile phone were exposed today. According to the whistleblower Ishan Agarwal, the phone will be equipp...[Details]
According to foreign media reports, Samsung's system Beta test version operations manager revealed that the Samsung Galaxy S20 series will not push the One UI 4.0 beta version next, but will direct...[Details]
In today's society, AC/DC conversion and DC/DC conversion have gradually become modular industries and important components of various electronic equipment and automatic control equipment. The qual...[Details]
Alpha Wire, a leading global manufacturer of connectivity solutions, recently launched the innovative EcoWire, which perfectly solves the contradiction between the ever-increasing performance requi...[Details]
Including testing, Android 12 has been released for one year, but statistics from Uptodown show that Android 12 users account for only 2.6%, which is less than one-tenth of Android 11.
Specifi...[Details]
Since the beginning of this year, state-owned central enterprises have continued to increase their layout in strategic emerging industries. A reporter from China Securities Journal recently visited th...[Details]