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1. Changes in the concept of overvoltage protection
When lightning strikes in the distance, the lightning surge is transmitted to the equipment through the power grid or communication line...[Details]
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Problem: Because there is no 5V pin on the stm32 minimum development board, the VCC and GND of the ultrasonic module are connected to the computer USB port for power supply, and the power supply of t...[Details]
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This article mainly introduces the design of multi-channel video acquisition circuit, USB interface circuit, serial port conversion and communication circuit in the hardware design of video monitor...[Details]
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South Korea's Hyundai Motor Group announced on July 3 that it has developed a new engine technology that can significantly improve vehicle performance and fuel efficiency and reduce gas emissions, Yo...[Details]
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Capacitors have equivalent series resistance (ESR) and equivalent series inductance (ESL). For example, the output filter capacitor (bulk capacitor) of a VRM uses a 3280 μF electrolytic capacitor, ...[Details]
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This article introduces the use of a timing automatic control circuit made by a microcontroller to achieve eight-way timing control. It is very suitable for schools and other units to be used as work...[Details]
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Introduction In many cases, it is necessary to accurately measure the flow rate of gas. With the development of electronic technology, people hope that the measuring device can directly give electric...[Details]
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On September 28, at the 2019 Annual Partner Conference of Guoke Jiahe Fund held recently, Ni Guangnan, an academician of the Chinese Academy of Engineering, was invited to attend and delivered a spee...[Details]
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Ford is using a newly developed 3D mapping technology to analyze the rear axle components of Ford F-Series pickup trucks during the assembly process, with the goal of increasing the smoothness of...[Details]
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Improved power failure protection circuit
Figure 1. Improved power failure protection circuit
In the circuit shown in the figure, during the operation of the Zener diode, the charge of C2 is s...[Details]
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Flowmeter is an instrument for measuring fluid flow in industrial sites. With the development of industry, the accuracy and range of flow measurement are increasingly required. In order to adapt to va...[Details]
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introduction In the process of film interpretation, it is often required to count the number of negatives and automatically locate the negatives at different positions to facilitate searching and mag...[Details]
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Researchers have been looking for test instruments that can meet the challenges of technological development to meet the needs of various industries, including education. It is not only the current ba...[Details]
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Not long ago, Xiaomi officially released the new MIUI 13 system, which added many new features and functions, and further improved the fluency. The current Xiaomi 12 has been pre-installed at t...[Details]
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On November 8, South Korean
lithium battery
giant LG Energy Solution said it had reached an agreement with U.S.
electric vehicle
manufacturer Rivian to supply it with electric vehic...[Details]