Shenzhen Changjiang Connector Co., Ltd. is a world-leading professional connector manufacturer with 20 years of experience. Its products mainly include wire-to-board connectors, board-to-board connectors, wire-to-wire connectors, wire harness processing and connector design, mold development and manufacturing. It is compatible with international brand connectors from Europe, the United States, Japan, South Korea and other countries.
I recently built a lorawan gateway using a Raspberry Pi 3B+. When running the test, I found that the gateway could not receive data from the lorawan terminal after running for a while. I searched for ...
Popular indoor positioning technologies include WIFI, Bluetooth, RFID, and UWB. All of these technologies require the deployment of positioning base stations. WIFI requires the deployment of APs, Blue...
The firmware for the NUCLEO_L073RZ and NUCLEO_L452RE development boards has been added to the firmware repository on github (and also updated on Mayun), and you can use the onboard STLink to download ...
Now a certain PCB prototype is 5 yuan for 5 pieces with free shipping, all colors are the same price, so cool. I have never had a suitable tool to measure weak currents in low power consumption state,...
1. Introduction to Agilent Oscilloscope The first time I heard about and used a Keysight oscilloscope was when I was a graduate student. Now I think that I learned four years of undergraduate study i...[Details]
2020 is a year worth remembering for United Electronics. The 100 millionth Engine Control Unit (ECU) produced by the company officially rolled off the production line, breaking the record again. Rega...[Details]
Virtual reality, or VR for short, is currently being used in urban planning, large-scale engineering roaming, digital hotels, exhibitions, museum display systems, and other fields. It is also showi...[Details]
Halfway through the roll, the pattern of battery arena seems to be expected. CATL took the lead in releasing its semi-annual report. Although its domestic market share was squeezed by 4.27 percenta...[Details]
As a revolutionary energy-saving lighting technology, LED lighting is developing rapidly. However, the requirements for LED driver power supplies are also increasing: high efficiency, high power fa...[Details]
On January 21, according to 91Mobile, realme is about to release a new product in the thousand-yuan range, realme 9 Pro+, which is the super cup product in the realme 9 series. According to r...[Details]
As one of the "three major parts" of a car, the chassis system plays a pivotal role in technology research and development, product development, market competition, and car purchase comparison and ...[Details]
On June 5, the Shanghai Bokang project with a total investment of 1.3 billion yuan was officially signed and settled in Gaoling, Xi'an. According to Xi'an Evening News, the Shanghai Bokang photolit...[Details]
1.2.4 Current status and shortcomings of the measurement system
The current status and shortcomings of the measurement system are as follows:
1) Power reference: The power reference is used to re...[Details]
As the Sino-US trade dispute intensifies, market research firms have predicted that Huawei's mobile phone shipments this year will decline to around 150 million units. However, South Korea's SK Secur...[Details]
1 Introduction
CAN (Controller Area Network) is a digital signal communication protocol originally designed by Bosch of Germany to solve the problem of automation system integration in aut...[Details]
Passive shunts measure the current flowing through a relatively small resistor, typically with a full-scale voltage drop of 60 mV for higher power devices and 200 mV for electronic instruments. Sim...[Details]
Don't be fooled by their appearance, they are all capacitors.
Dilingling, I have a new lesson today. Following the last diagram of the working principle of
the power supply
, today...[Details]
UPS power supply testing generally includes two types: steady-state testing and dynamic testing. Steady-state testing is to test the phase voltage, line voltage, no-load loss, power factor, efficienc...[Details]
Avago Technologies has introduced a new product in the smallest RF amplifier series on the market. The new VMMK-3xxx amplifier uses Avago WaferCap chip-scale packaging (CSP) technology to provide an ...[Details]