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“Why is this screen not responding when I press it?” A child under 10 years old asked when he got a handheld game console. For a child under 10 years old, it is incredible that a game console does ...[Details]
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On the 24th of this month, Xiaomi 9 Pro was officially released. What’s interesting is that such a 5G mobile phone was reduced in price in disguise as soon as it was released. Currently, China Mobile...[Details]
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Are you a PoE user? Have you ever purchased PoE equipment? If so, have you ever made sure that the equipment complies with the latest IEEE standards? If you answered yes to the last question, then I ...[Details]
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China Energy Storage Network:
Energy Internet is accelerating in the field of equipment. Many energy companies are eyeing this huge market, and global electrical giant Schneider is well prepa...[Details]
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1. Experimental Phenomenon
P0.0 outputs a square wave signal with a period of 500us, and the period of the square wave is determined by timer T0.
2. Purpose of the Test
Master ...[Details]
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The price of three-phase motors varies depending on factors such as brand, model, power, and material. Here are some common three-phase motor price ranges:
The price of a small power (0.18kW -...[Details]
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For electronic engineers, they must not only pay attention to the chips and semiconductors themselves, but also pay attention to downstream electronic applications. After all, chips serve electronic ...[Details]
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Set the digital dial to 20V (or 200V) AC voltage, do not connect the black test pen, hold the insulating rod of the red test pen with your hand, and touch the two holes of the socket (or the exposed ...[Details]
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The basic structure of the system is shown in Figure 1, which includes sensor signal acquisition and processing, power motor drive, steering servo control, and control algorithm software developmen...[Details]
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There are eight eight-segment digital tubes on the development board. Now light them up. There are two types of digital tube displays: dynamic and static. There is no essential difference. Due to the...[Details]
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PKP Energetyka, a Polish railway power supply company, is developing an innovative energy storage system based on green hydrogen.
As part of a research and development project, an energy stora...[Details]
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Unlike incandescent lamps, which radiate heat, the heat generated by LEDs must be dissipated away from these semiconductor devices by conduction. Without proper thermal management, LED light output...[Details]
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1. Why do we need to do electromagnetic compatibility design for products?
Answer: Meet product functional requirements, reduce debugging time, make the product meet the requirements o...[Details]
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In Chapter 3, we learned about 74HC138 and learned that 74HC138 can only make one output port low at the same time, that is, at one time, we can only enable one digital tube and change the display ch...[Details]
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First, in the previous example, add the dma.c file to the dev folder, and then add it to the Makefile in that directory:
This is the framework. Next, open dma.c to implement it:
...[Details]
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