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1. Influence of Filament Voltage Amplifier
There is a capacitor Cf between the gate and the filament of the electron tube. The 50 Hz AC filament voltage will cause leakage current IA between the ...[Details]
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Abstract: This application note presents a reference design for a nonisolated LED driver intended to operate directly from a 400VDC input. The design drives a string of 27 WLEDs (white LEDs) or, op...[Details]
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I often encounter some annoying pseudo instructions starting with ".", such as .globl _start .balign .align .data .text, etc. The most annoying one is as follows: _undefined_instruction: .word undefi...[Details]
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Abstract: This paper mainly takes virtual instrument technology as the main research object, studies its role and method in power quality detection, and develops a set of power monitoring system base...[Details]
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Introduction to Noise Signal Generator The completely random signal of the noise signal generator is a white noise with a uniform spectrum within the working frequency band. Commonly used white noise...[Details]
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Traditional waveform recorders can collect signals for a long time and save the data to the hard disk of the device. The length of the collection time depends on the sampling rate and the hard disk c...[Details]
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The S3C2440 datesheet says that it can reach 400M, but it does not mean that it must work at 400M. The main clock crystal comes from an external crystal (XTIPLL) or an external clock (EXTCLK). The cl...[Details]
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With the rapid development of the Internet, the number of network users has increased rapidly. While using computers for network interconnection, various home appliances, instrumentation equipment and...[Details]
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Yesterday was the day when realme X2 Pro was released. Although the phone is extremely competitive in the market, it caused heated discussions due to errors in the PPT. Last night, realme CMO Xu Qi o...[Details]
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On December 15, BYD Xiangyang Industrial Park was roaring with machines, and the first blade battery production line with a capacity of about 1.9GWh was officially put into production. BYD's full rang...[Details]
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The forward and reverse wiring of a three-phase inverter is a highly technical job, involving many aspects such as electrical principles, wiring methods and safe operation. This article will introd...[Details]
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Financing in June 2021: - More than 40 semiconductor and related companies, with a financing scale of more than 6.4 billion yuan - Hesai Technology (Round D, over US$300 million) and Simou Technology...[Details]
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Beijing time, March 23 morning news, according to a spokesman for Dow Jones, the company's "Wall Street Journal" will start selling single iPad electronic newspapers from Wednesday, and users...[Details]
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Many people have misunderstandings about the memory of 51 microcontrollers. The most common ones are the following two ① Compile in compact mode if the variable exceeds 128 The actual situation is th...[Details]
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Yesterday, at the end, I mentioned PAM, PWM, and SPWM, saying that they are often seen in some manuals or reference books, especially in the manuals of frequency converters. So, what are they? Let'...[Details]