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UPS (Uninterruptible Power System) is a computer power protection device with an inverter as its main component and a stable voltage and frequency output. UPS appeared along with the birth of com...[Details]
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1 Introduction
A 110kw total step-down substation of our company was built in the mid-1980s. It is equipped with two 25mva main transformers and undertakes the power supply tasks of multip...[Details]
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On the 14th, the National Energy Administration held an online press conference for the fourth quarter to release the energy situation and renewable energy grid-connected operation in the first thr...[Details]
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1. 概述
绿色工作模式PWM控制器SG6840/SG6841具有许多特殊的功能和完善的保护特性。在备用状态下，PWM工作频率自动降低，功耗减小，但输出电压仍保持稳定不变，该器件采用Bi-CMOS工艺制造，起动电流和正常工作电流大大减小，因此电源转换效率较高。起动电流典型值只有30μA，工作电流也只有3mA。在正常工作状态下，SG6840/SG6841为固定频率PWM控制器。工作过...[Details]
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This article introduces a simple radio circuit made of CMOS digital circuit CD4011, which has high radio sensitivity. CD4011 is a digital integrated circuit containing 4 NAND gates.
Prin...[Details]
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In the development of scientific research projects, sometimes you need to play phone ringtones, music, etc. The simple way is to buy a dedicated music chip, but the disadvantage of this method is that...[Details]
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The basic principle of the balancing circuit
designed in this paper
is to measure the voltage of the single cell in the battery pack by using the dedicated battery pack management chip LTC6802-...[Details]
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POE (Power Over Ethernet) refers to a technology that can provide DC power to some IP-based terminals (such as IP phones, wireless LAN access points, network cameras, etc.) while transmitting data ...[Details]
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A complete PLC program is not as simple as just making the system run. It also requires complete annotations, sophisticated architecture, good scalability, a complete alarm protection system and s...[Details]
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According to Nidec’s official WeChat account, Nidec Corporation and Renesas Electronics Corporation have recently reached a consensus to jointly develop semiconductor solutions for the new generation...[Details]
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Since the chassis of traditional fuel vehicles is mainly to meet the basic driving experience, the components are independently controlled and each one operates independently. During the development ...[Details]
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At present, contactless smart card technology is used in hospital access control, computers, IT login systems and medication dispensing systems, which can help hospitals better control the safe e...[Details]
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introduction Traditional lithium battery charging management chips are generally step-down type, that is, the input voltage must be higher than the battery voltage. Therefore, for charging two lith...[Details]
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The excitation current is the current flowing through the rotor of the synchronous motor (with this current, the rotor is equivalent to an electromagnet with an N pole and an S pole). During normal...[Details]
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Electronic systems face harsh conditions due to the wide operating voltage requirements, large transient voltages, and large temperature drift of the automotive environment. This article describes ho...[Details]
DIY/Open Source Hardware
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