The wireless communication devices we use in daily life all contain MAC addresses. MAC addresses are unique. Usually in network communications , MAC addresses are used as device identifiers. MAC addre...
1. Chinese semiconductor device model naming method The semiconductor device model consists of five parts (field effect devices, special semiconductor devices, composite tubes, PIN tubes, and laser de...
The "open" trend in the field of mobile communications is becoming more and more obvious. O-RAN is definitely one of the hottest terms in the mobile communications industry in the past two years. The ...
Qorvo PAC chip is a highly integrated product for three-phase motor control. It can reduce the size and cost of PCB while improving system reliability and shortening system development time. It is wid...
Recently, I need to use STM8S105 as a driver controller, which involves using 485 to communicate with the host computer, and CC2541 is used in the Bluetooth module of the host computer. This is a new...[Details]
On August 13, the launching ceremony for the concentrated start-up of major projects in Zhejiang's 2021 province-wide high-quality development and construction of a common prosperity demonstration ...[Details]
1. Voltage measurement 1. Measurement of DC voltage, such as battery, Walkman power supply, etc. First, insert the black test lead into the "com" hole and the red test lead into the "V Ω". Turn t...[Details]
1. Overview Basic knowledge of UART, Universal Asynchronous Receiver/Transmitter (Universal Asynchronous Receiver/Transmitter), commonly known as UART, is an asynchronous receiver/transmitter. Peo...[Details]
Combining an analog multiplier with a high-side current-sense amplifier enables the measurement of battery charge and discharge currents in laptop computers or other portable instruments. This arti...[Details]
On December 13, the first energy storage power station in Muhe, Ningxia started up normally, marking the access of the Ningxia Muhe 200MW/400MWh new energy storage power station, the largest shared en...[Details]
According to foreign media reports, Japanese company Hitachi Astemo announced that it has developed a prototype of a 360-degree stereo vision system for autonomous vehicles driving on ordinary street...[Details]
Causes of Winding Short Circuit in Asynchronous Motors
(1) The motor runs under overload or overvoltage for a long time, causing the current in the winding to be too large and heat up, which a...[Details]
Against the backdrop of global semiconductor production capacity shortage, Espressif Systems (688018.SH), as a chip design company, is striving to increase production capacity while continuously evol...[Details]
1. Brushless motor drive module 1. Basic Introduction High-speed brushless motors are now widely used in small unmanned quadcopters, power tools, and electric vehicle platforms. The following is a...[Details]
This paper summarizes the characteristics of several common road lighting test technologies and methods, and focuses on introducing a simple and efficient single-lamp actual measurement synthesis tes...[Details]
1. Experimental Purpose 1. Master the construction method of AVR microcontroller development platform. 2. Master the programming methods of GPIO. 2. Experimental content and results 1. Design P...[Details]
1. Working principle of frequency converter
According to the energy conversion situation, frequency converters can be divided into two types: AC-AC frequency converter and AC-DC-AC frequency c...[Details]
Many systems require low-power power supplies in addition to mains power. A typical example is that when the analog front-end amplifier requires ±5V power, the main digital circuit only requires +5V p...[Details]
First look at the address line of 2440: mini2440 schematic.pdf
The 2440 chip provides 27 address lines = 128M.
The S3c2440 chip only provides 27 address lines addr on the pins provi...[Details]
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