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Focusing on innovation in key areas, Shanghai Electric actively helps build a new power system. Recently, the National Development and Reform Commission and other three departments issued the "Action ...[Details]
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According to the official measurement of the China Earthquake Networks Center: At 22:34 on March 16, a magnitude 6.0 earthquake occurred near the east coast of Honshu, Japan (37.62 degrees north lati...[Details]
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Section 5 Specific techniques of manual welding operation
To ensure high-quality solder joints, specific welding operation techniques may vary, but the following methods summarized by predecess...[Details]
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Introduction
SJT5301B is a touch dimming IC suitable for adjusting the brightness of LED lights. It has dimming modes such as stepless dimming, two-stage dimming and three-stage di...[Details]
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According to the Bangkok Post, Huawei Technologies (Thailand) Co., Ltd. and the Skill Development Department of the Thai Ministry of Labor recently signed a Memorandum of Understanding on Digital Ski...[Details]
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1. Startup code generated by Keil C
Listing 1.1 AT89C51 startup code
$NOMOD51 //Do not use the default special function register 51
;
; This file is part of the C51 Compiler package
; Copyri...[Details]
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Although switching power supplies operate at frequencies far beyond the range of human hearing, they can generate audible noise under certain load conditions. The possible sources of audible noise ar...[Details]
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On the evening of February 11, Sunny Optical announced on the Hong Kong Stock Exchange that its mobile phone lens shipments in January fell 11% year-on-year, mainly due to the high base of shipments ...[Details]
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A new report from Akamai Technologies, Inc. (Akamai) (NASDAQ: AKAM), the intelligent edge platform for secure digital experiences, found that the media industry was hit with 17 billion credential stu...[Details]
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The RS232 standard was born before RS485, but RS232 has several shortcomings: The signal level of the interface is relatively high, reaching more than ten V. Improper use may easily damage the inter...[Details]
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Focusing on smart power and smart industry to build a sustainable future
Shenzhen, China, October 28, 2024 –
STMicroelectronics (ST), a world-leading semiconductor company servin...[Details]
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At present, due to the high price of spectrum analyzers, only a few laboratories in colleges and universities are equipped with spectrum analyzers. However, in electronic information teaching, witho...[Details]
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1 引言 目前，开关电源正朝着高频、高效、环保等方向发展。与传统拓扑结构相比，三电平变换器由于具有开关管电压应力为输入直流电压的一半，适合输入电压较高的场合，输出电压谐波小等优点，从而备受关注。此外，伴随着高频化发展，出现了软开关技术，并结合三电平产生了不同拓扑的DC/DC变换器。传统ZVS半桥三电平DC/DC变换器轻载时滞后管难以实现ZVS，且开通损耗严重。ZVZCS变换器消除了ZVS三电平变...[Details]
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V-cone flowmeter operation and use ①V-cone flowmeter must be used with a differential pressure transmitter to know the flow rate. In order to facilitate the zero point adjustment on site, a "thre...[Details]
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With
the development of
digital audio
technology, the low-frequency response of many sound sources has reached or exceeded the lower limit of human hearing, 20HZ. In order to fully reprod...[Details]
Automotive Electronics
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