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1. Oscillographic method to measure frequency (1) Determine the frequency by measuring the period The period measurement method can be used to first measure the period of the signal, and then the fre...[Details]
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Recently, Hangzhou Customs released Zhejiang Province's foreign trade "report card" for the first three quarters of 2021. In the first three quarters, the total value of Zhejiang Province's imports a...[Details]
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——This article is selected from the May "Test and Measurement Special Issue" Design requirements: This project can use Arduino Uno or Duemilanove board, with three design modes: · Single - Mea...[Details]
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On October 26, Allegro MicroSystems, a supplier of power and sensing solutions for motion control and energy-saving systems, announced the launch of the new automotive-grade gate driver integrated ...[Details]
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The Chinese version of the first-generation Sony Xperia 5 has now received a system update to Android 11. Sony Xperia 5 users can check for Android 11 system updates themselves or get the full packag...[Details]
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In recent years, an emerging power factor correction (PFC) technology, interleaved PFC, has been increasingly used in applications with strict form factor requirements, such as slim LCD TVs or laptop...[Details]
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When the WDP500-2A plane grating monochromator is used to test the emission wavelength of a high-power laser diode at different currents, the matching of the laser diode has the disadvantages of lo...[Details]
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In the mine power grid, the harsh environment and frequent leakage faults underground can cause major accidents such as underground electrical fires, gas and coal dust explosions, and premature detona...[Details]
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Recently, the autonomous region’s major science and technology projects “Research on Key Technologies for MW-level Advanced Flywheel Energy Storage” and “Research on Key Technologies for Si...[Details]
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Preface 1. Introduction to the buttons of a multimeter 2. Calibration before measurement After selecting the gear, before measuring, you must touch the two test leads to observe whether the readin...[Details]
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Panasonic inverter is a brand of inverter developed and sold by Panasonic Group of Japan. Panasonic inverter has advanced technology, simple and convenient operation, stable working performance, hi...[Details]
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As early as last year's MediaTek press conference, OPPO announced that the new Find X series will be the first to use the Dimensity 9000 flagship chip. According to the latest news from blogger @李昂...[Details]
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At the moment of fingertips touching the screen, a driverless car quietly arrives, as if the future scenes in science fiction movies have quietly integrated into our daily lives. Enter the password...[Details]
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1 Scope This standard specifies an artificial weathering test method that uses fluorescent ultraviolet lamps and condensation devices to simulate the aging factors of natural climate, such as solar u...[Details]
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Earlier, foreign media reported that Apple spent 30 million US dollars (about 900 million Taiwan dollars) per month on Amazon Web Services (AWS) in 2018, a year-on-year increase of 10%, and will incr...[Details]