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1 Composition and working principle of constant current source The constant current source circuit is shown in Figure 1. In the figure, A is a high-precision op amp, Q1 and Q2 are power MOSFETs, and ...[Details]
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A few days ago, Zuoerlundao wrote an article about the pronunciation of single-chip microcomputers. Later, netizens kept calling to ask about the design method of single-chip microcomputer electronic...[Details]
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After the R16 version was frozen in June 2018, the complete version R16 that can fully reflect the three major features of 5G will be frozen in March 2020. The R17 version, which is expected to be fi...[Details]
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The design of large-capacity non-blocking TU trunk unit branch cross-connectors is one of the key technologies for realizing SDH (synchronous digital architecture) 2.5G optical transmission high-...[Details]
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Compared with ordinary double-winding transformers, autotransformers have the following advantages: 1) Less consumption of materials and low cost. Because the amount of silicon steel sheets and copp...[Details]
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In the previous two blog posts ( How to use W7100A to implement Telnet server (I) and How to use W7100A to implement Telnet server (II) ), we briefly introduced Telnet. Chapter 3 will demonstrate the...[Details]
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arm32 arm64 u-boot load linux command bootm bootm uImage_addr // No device tree, bootm 0x30007FC0 bootm uImage_addr initrd_addr dtb_addr // has device tree --- nand read.jffs2 0x30007FC0 k...[Details]
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On September 9, 2014, WPG Holdings, a leading electronic component distributor dedicated to the Asia-Pacific market, announced that its subsidiary Pinjia has launched a dimmable LED driver soluti...[Details]
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As 2019 draws to a close, competition between China and the United States in the commercialization of autonomous driving has become increasingly fierce. California, which has the largest number of ...[Details]
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March 11 news, recently, Ni Fei, President of ZTE Terminal Business Unit and President of Nubia Technology Co., Ltd., posted the appearance of the new ZTE S series on Weibo. From the photos, the main...[Details]
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1 Introduction
In recent years, with the continuous progress of wireless communication, sensor technology and embedded computing, the development of low-cost and low-power Internet of Things te...[Details]
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Main components: 89C52RC, 74HL138, two four-digit digital tubes, three independent buttons, flat cable, DuPont cable
Principle: Use the timer counter to set the timer to 50ms, and generate an interru...[Details]
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Transformer reset selection
Before discussing synchronous rectification, it is instructive to look at
the forward converter
with diode rectification
. The basic power stage of the forw...[Details]
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Abstract: Unity gain op amp buffers capacitive transducer and other high-impedance signal sources without the need for bias resistors.
Capacitive transducers and other high-impedance signal source...[Details]
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Resistors are generally called resistors in daily life. It is a current limiting element. After the resistor is connected to the circuit, the resistance of the resistor is fixed. Generally, it has ...[Details]