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1. Introduction to O-rings An annular cover consisting of one or more parts is fixed on a bearing ring or washer and contacts or forms a narrow labyrinth gap with another ring or washer. Its main fun...[Details]
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Abstract: In order to solve the problem that there are only national testing standards and no standardized testing instruments for testing geotextile permeability, an intelligent geotextile perm...[Details]
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With the rapid development of new energy electric vehicles, various electronic control subsystems constructed from electronic control, intelligent sensing and communication, and high-voltage modules ...[Details]
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A team at TU Delft has demonstrated a unidirectional superconductor that has zero resistance in one direction but completely blocks the flow of electricity in the other. The discovery, long thought i...[Details]
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Electromagnetic flowmeter has the advantages of high measurement accuracy, strong reliability, good stability, complete functions and long service life. It is developed based on a standardized manufa...[Details]
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Today I debugged the DMA part of STM32. It was my first time to use this part. The 8-bit microcontroller did not have this function. I felt it was very mysterious at first, so I studied it with awe. G...[Details]
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2020 is coming to an end, but Apple may still launch new products this year. Recently, foreign media obtained an internal memo allegedly from a reliable source. In the memo, Apple reminded service ...[Details]
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According to foreign media reports, on July 23rd local time, u-blox, a provider of positioning and wireless communication technology, and Arvento Mobile Systems, a company in vehicle telematics and f...[Details]
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U.S. President Trump said on Wednesday evening that "as a goodwill gesture", he would postpone the date of increasing tariffs on $250 billion of Chinese goods and products from October 1 to October 1...[Details]
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2.3 Failure Tree Analysis
Failure tree analysis is a logical analysis method. Logical analysis methods include event tree analysis (ETA), management error and risk tree analysis (MORT), and fai...[Details]
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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]
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Shanghai Chengwei uses a 5.7-inch (120×90) single-color LCD touch screen with Chinese menu display. The nominal capacity of the syringe, the lateral force and axial pressure used in the leakage test ...[Details]
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Traditional electric fans are mostly controlled mechanically, with few functions, high noise, and large wind speed changes in each gear. With the development of science and technology and the imp...[Details]
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1 Switching power supply electromagnetic interference mechanism and suppression measures
The switching devices of switching power supplies are mostly MOSFET and GIBT. When they are turned off, they ...[Details]
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The ARM processor startup process involves three aspects of knowledge:
Startup method
Address layout
Start the process
The boot process of the S3c2440 ARM ...[Details]
Analogue and Mixed Signal
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