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The following is the source program I wrote to read icl7135. It is a serial connection method, the crystal oscillator is 6M, and the frequency of icl7135 is obtained by dividing it by one quarter afte...[Details]
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The STM32F10X series with CM3 core added RDP function. After that, the Segger Unsecured Chip or Unlock STM32 Cmd cannot remove RDP, and Unlock STM32 prompts that the model cannot be recognized. I t...[Details]
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Line intermittent oscillator circuit and principle
Figure 8-01(b) is a transformer-coupled horizontal intermittent oscillator, and Figure 8-01(b) is its simplified circuit. The working principle ...[Details]
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"BYD used to be a technology-obsessed and relatively closed company," said Li Yunfei, general manager and spokesperson of BYD Sales Company, to dozens of journalists attending the "Media Visit BYD"...[Details]
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On October 13, the launching ceremony of Yibin Intelligent Industrial Park of Far East Smart Energy Co., Ltd. (abbreviated as: Far East Holdings, stock code: 600869), jointly sponsored by Far East ...[Details]
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There have been continuous leaks about the Huawei P50 series of mobile phones recently. Now a netizen from IT Home has contributed a post, and a real photo of what is suspected to be the Huawei ...[Details]
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Introduction
The electrostatic discharge (ESD) robustness of an integrated circuit (IC) can be differentiated using a variety of tests. The most common types of tests are the Human Body Model (HBM)...[Details]
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MediaTek releases Pentonic 1000 platform to upgrade 4K 120Hz smart TV experience Pentonic 1000 integrates new features such as cloud gaming and 4K streaming November 15, 2022 - MediaTek released t...[Details]
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On August 14, from General Motors, Ford to Volkswagen to Toyota, automakers are working to phase out fuel vehicles. Although electric vehicles help reduce harmful emissions and curb climate warming, ...[Details]
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Transformer parameters
Transformer technical parameters are an important indicator for understanding transformers. If you want to use the transformer, you must understand its par...[Details]
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This week, LED driver IC manufacturers have issued price increase letters one after another. These price increase letters all point out that the reasons for the price increase are due to the rising ...[Details]
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Speaking of oscilloscopes, ordinary people may not know about them, but for electronic engineers, they are definitely "old friends". As the "eyes of electronic engineers", they are an indispensable b...[Details]
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Introduction Wireless sensor networks can be summarized by a simple mathematical equation: sensor + system on chip + wireless communication = wide application. Sensors transform the detected sig...[Details]
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On June 5, data released by SNE Research, a Korean market research organization, showed that from January to April 2023, the total installed capacity of global electric vehicle (EV, PHEV, HEV) power ...[Details]
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1. Selection of Optocoupler
For optocouplers using a phototransistor, the CTR range is mostly 20% to 300% (such as 4N35), while PC817 (not recommended) is 80% to 160%, and Darlington optocouplers...[Details]