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The impact of automotive wiring harness grounding on EMC
The electromagnetic environment in which a car is located is very complex and is greatly affected by the surrounding noise; on the othe...[Details]
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We all know that motor drive is one of the main application areas of IGBT.
Some students may have such confusion:
"IGBT is originally used to drive the motor, so why does it need a...[Details]
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1 Introduction
As shown in Figure 1, the rectifier part of a general cascade high-voltage inverter uses uncontrollable diodes, so the energy transmission is irreversible. When the motor is in a reg...[Details]
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At present, with the rapid development of Mini LED display technology, Mini LED display products have begun to be used in ultra-large-screen high-definition displays, such as monitoring and command, ...[Details]
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The device uses 5 minutes as a timing unit and can last up to 1 hour. It uses a 3V battery as the power source and has a buzzer alarm. The power consumption is about 6mA when working (using AT89C...[Details]
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On the morning of January 11, Apple officially launched a smart battery case replacement program today, mainly targeting the iPhone XS, XS Max and iPhone XR models. According to Apple, some s...[Details]
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From a product perspective, the top three products mentioned most often are Delta’s M8 TL-US inverter (four certifications), Huawei’s Sun2000-11.4KTL-US (four certifications), and Fronius’ Symo 24....[Details]
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introduction Waveform refresh rate is one of the important indicators for judging the performance of digital oscilloscopes. It directly reflects the ability of the oscilloscope to capture waveform de...[Details]
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The Ethernet interface has fast communication speed, reliable transmission, and is easy to use and configure. For bit rates below 20 Mb/s, a 100 Mb/s network card can forward packets without packet l...[Details]
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On the morning of March 1, Microsoft announced that Dr. Hou Yang will succeed Alain Crozier as Chairman and CEO of Microsoft Greater China, leading Microsoft's strategy, sales and marketing ope...[Details]
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After disabling all interrupts, we need to disable MMU and CACHE. Because at this time, the environment is still being initialized, and these two things are not needed. So we need to disable them all...[Details]
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Abstract: With the rapid development and increasing maturity of microelectronics technology, computer technology, wireless communication and sensor technology, wireless sensor networks have develop...[Details]
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Power field effect transistor (Power MOSFET) is a unipolar voltage control device with majority carrier conduction. It has the advantages of fast switching speed, good high-frequency performance, h...[Details]
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UBS analysts said that Apple's 2019 new iPhone sales in the United States are off to a strong start, but the company's data suggests that customers may have to wait longer to get the iPhone 11 or iPh...[Details]
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1 Introduction The design of this frequency meter takes the AT89C51 microcontroller as the core and uses its internal timer/counter to complete the measurement of the period/frequency of the...[Details]