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Photovoltaic inverter market has both opportunities and challenges
The stimulation of the foreign trade industry by the national strategy of “One Belt and One Road”, the activation of the ...[Details]
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A general passive harmonic filter uses an LC trap circuit, which is connected in parallel on the line to provide a low impedance path for the harmonic current, as shown in Figure 1.
Figure 1 Tr...[Details]
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1 Introduction
With the continuous improvement and beautification of people's living environment, colorful neon lights can be seen in many occasions. LED colored lights have been widely used d...[Details]
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Today, with the rapid development of electronic technology, the old
vacuum tube
has been gradually replaced by transistors or integrated circuits with small size, low power consumption an...[Details]
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First of all, the gpio interrupt is different from 1768. The interrupt used by 1768 shares the interrupt channel with eint3. In 1788, an interrupt is specially opened for gpio. #ifndef __JOYPAD_H_ #d...[Details]
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ARM processors support position-independent programming, which means that programs loaded into any address space of the memory can run normally. Its design method plays an important role in the dev...[Details]
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The purpose of subwoofer
——As a part of the home theater system, it is responsible for reproducing the low-frequency sound effects in movie sound effects, used to make up for the insufficient low-f...[Details]
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Before porting, we also need to install and configure eldk for compiling u-boot. Below we will introduce the installation and configuration of eldk:
1. Download eldk
Select any version of...[Details]
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First, for some basic introduction to SPI, refer to the library functions or user manuals of related chips. The following introduces the basic usage of SPI library functions and the definition of par...[Details]
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1. System hardware composition and network architecture The core of the camera hardware adopts the S3C2440A chip based on the ARM9 architecture introduced by Samsung. The processor's main frequency r...[Details]
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Figure 1 shows an audio panpot circuit that responds to the setting of a potentiometer by continuously changing the position of a mono audio signal between the left and right stereo channels. Low cos...[Details]
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Power Issues
1.VDDCORE and VDDIO pin power supply
A) VDDCORE and VDDIO pin power supply must be connected to a clean DC power supply using decoupling capacitors; the decoupling capacitors should be ...[Details]
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I recently did a project that required me to use PWM to control the speed of a 4-wire fan. After debugging, I recorded it. typedef struct { u16 pwm_change_flag; u16 pwm_value; }Pwm_Fan_t; Pw...[Details]
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On August 20, Weilan Technology released its 2020 semi-annual report. During the reporting period, the company achieved operating income of 8.043 billion yuan, a year-on-year increase of 41.02%; the ...[Details]
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my country's new energy vehicle industry is developing rapidly. High-power charging can meet consumers' demand for fast charging and is an important development direction of electric vehicle chargi...[Details]
GD32 MCU
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