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From August 25 to 27, the 2020 CPCA SHOW was grandly held at the Shanghai National Exhibition and Convention Center. As an integrated service provider of electronic design and manufacturing technolog...[Details]
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I recently did a project that required me to use PWM to control the speed of a 4-wire fan. After debugging, I recorded it. typedef struct { u16 pwm_change_flag; u16 pwm_value; }Pwm_Fan_t; Pw...[Details]
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my country's BeiDou-3 global positioning system has officially started construction, and plans to launch four global networking satellites by the end of this year. Let's follow the security electro...[Details]
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With the continuous development of power electronics technology, motor control theory and microcontrollers, modern AC speed control technology has been widely used in the national economy. At present,...[Details]
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This application note describes the design of an interface to a single ended FM IF 183.6MHz filter. A passive LC network, balun, is used to provide the required balanced to unbalanced interface. Th...[Details]
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Noise meter/sound level meter is the most basic instrument in noise measurement. Noise meter/sound level meter is generally composed of condenser microphone, preamplifier, attenuator, amplifier, frequ...[Details]
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I am engaged in switching power supply. I used to make adapters, chargers, and iron-shell switching power supplies. Later, I made LED power supplies . At first, I made some 1W and 3W high-power LED d...[Details]
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On June 6, Yang Chaobin, president of Huawei's 5G product line, said that the boundaries of each generation of mobile communication technology are very clear, and the next 10 years will be the 10 yea...[Details]
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This article will cover considerations related to battery packs and managing state of charge. Since a battery pack is made up of multiple cells connected in series, its effective performance is based...[Details]
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Preface The control of the MCU is actually the control of the I/O port. No matter what kind of control the MCU performs on the outside world, or what kind of control it accepts from the outside, it i...[Details]
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The structure and light transmission principle of optical fiber
1. Optical fiber structure and types
1. Optical fiber structure Figure 7-1-1
2. Types
2. Princip...[Details]
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On May 14, the National Committee of the Chinese People's Political Consultative Conference held a biweekly consultation meeting. Zhou Yumei, a member of the National Committee of the Chinese People'...[Details]
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The TPS2000B Series offers a wide range of features in an oscilloscope while providing familiar, easy-to-use controls and menus. The Tektronix oscilloscope TPS2000B Series uses IsolatedChannel™ techn...[Details]
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I have introduced many smart locks. Today’s one is said to be very powerful, with 6 ways to open the door for you. U-Bolt Pro smart lock looks simple and elegant. The most basic 360-degree fing...[Details]
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"Next year, Chery will have to be more aggressive in its intelligentization! It must be at the top of the industry!" On October 18, Yin Tongyue, Secretary of the Party Committee and Chairman of Che...[Details]