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Recently, I participated in the driver debugging of the mobile payment project team, which mainly involved the bootloader download program for the STM32 microcontroller. The following is a summary of...[Details]
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introduction
Due to various reasons, there are current harmonics in the power grid. Due to the existence of power grid impedance, the harmonic current flows through the power grid impedanc...[Details]
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The circuit principle is shown in the figure below. The core of the circuit is a video switching circuit
MAX454
. It has good quality output images and very low phase distortion. The ci...[Details]
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Platform: mini2440 Cross toolchain: arm-linux-gcc-4.3.2
1. Basic knowledge of kernel transplantation
Porting the kernel is also called building a BSP (boardsupport packet). BSP ...[Details]
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Introduction LLC is the best candidate for front-end DC-DC converter, which can meet the requirements of wide input voltage range and high efficiency. UCC25600 is designed for DC/DC applications usin...[Details]
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1. Selection of components 1. Three components of DC-DC power converter 1) Switch: Regardless of the type of DC/DC converter, the components used in the main circuit are only electronic switches, ind...[Details]
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The development of new energy vehicle power battery systems involves multiple disciplines including materials, chemistry, mechanics, thermodynamics, heat transfer, fluid mechanics, electricity, s...[Details]
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This should start from analyzing the basic elements that form the consequences of electromagnetic interference. The electromagnetic energy emitted by the electromagnetic disturbance source is trans...[Details]
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The realization of multi-channel synchronous output of signal sources with a fixed phase relationship between each channel has important applications in radar, communication and other fields. In orde...[Details]
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Mercedes-Benz recently officially released the EQA model. Its power battery is the first one based on square shell battery cells, which is quite interesting. Electrek also recently released a phot...[Details]
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The latest report from market research firm Counterpoint shows that 5G smartphone sales accounted for 13.5% of total smartphone sales in the United States in August 2020, while the figure was only 3%...[Details]
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In any
switching
power supply
design, the physical design of the PCB board is the last step. If the design method is not appropriate, the PCB may radiate too much electromagnetic inte...[Details]
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On January 15, blogger @8090生活数码 exposed a rendering of the suspected front panel of the P40 Pro. Its biggest highlight is the four-curved design, which is consistent with the previously expo...[Details]
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1.1.S3C2440 processor structure The structure of S3C2440 processor is shown in the figure below. Its core unit is ARM9TDMI processor core, which mainly includes 16K instruction cache and 16K data cac...[Details]
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Shanghai International Auto Parts, Repair, Inspection and Diagnosis Equipment and Service Products Exhibition
National Exhibition and Convention Center (Shanghai), December 2-5, 2024
...[Details]
stm32/stm8
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