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As shown in the figure, this is the LM4912 dual-channel amplifier circuit. The left and right channel audio signals are input into the 1st and 5th pins of the LM4912 respectively, and are output fr...[Details]
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OFweek Cup · OFweek 2023 China
Robot
Industry Annual Selection (abbreviated as OFweek Robot Awards 2023) is jointly organized by OFweek, China's high-tech industry portal, and its authorita...[Details]
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Small signal square law detector circuit
Small signal (usually input voltage is below 0.2V) detection uses the curved part of the diode volt-ampere characteristic curve. Its ba...[Details]
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1 Overview Since the 20th century, my country's coal mines have begun to use a large number of 127V lighting power supplies and their comprehensive protection devices. So far, the lighting equipm...[Details]
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(I) First, set the multimeter to the resistance range
(ii) Use the two probes of the multimeter to touch the two ends of the electrolytic capacitor.
At this time, the pointer of the multime...[Details]
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Founded in August 2007, Chuangdongfang is a professional institution focusing on equity investment in small and medium-sized science and technology enterprises. It has successively obtained recogniti...[Details]
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UPS power supply plays an important role in protecting data and equipment from damage. Therefore, it is very important to use and maintain UPS correctly. In fact, reasonable maintenance and use o...[Details]
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On December 24, Xu Ping, Chairman of Kaifeng State-owned Assets Investment and Operation Group, led a team to visit Sichuan Chemical Group for exchanges and discussions. Feng Xingjian, Secretar...[Details]
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Beijing, March 9, 2010 - ABB, the world's leading power and automation technology group, actively participates in the development and utilization of solar energy in China, making positive contribution...[Details]
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According to Reuters, Texas Instruments Inc reported its first quarterly revenue growth in nearly two years on Tuesday, while the company revealed that it had complied with U.S. export restrictions a...[Details]
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The article talks about C has standards, and sometimes it will be upgraded (like armv6 armv7 armv8), there are C99, C11 C++ has standards, which are sometimes upgraded (like armv6 armv7 armv8), inclu...[Details]
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1. Working principle of grating ruler displacement measurement The grating is composed of a light source, a lens, a scale grating (main grating), an indicator grating (sub-grating) and a photoelectri...[Details]
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(I just figured it out today): PC transmits commands and data to the MCU system through the serial port assistant: it starts with A5 and ends with 5A; the data in the middle has different lengths, and...[Details]
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In the new energy vehicle industry chain, more and more companies are forming alliances. On February 24, lithium battery manufacturer Xinwanda announced that its subsidiary Xinwanda Electric Vehicl...[Details]
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In the rapid development of the semiconductor industry, silicon carbide (SiC), as a new type of wide bandgap semiconductor material, is gradually becoming an important development direction of the ...[Details]
Test/Measurement
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