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On May 6, Li Qiang, member of the Political Bureau of the CPC Central Committee and Secretary of the Shanghai Municipal Party Committee, and Gong Zheng, Deputy Secretary of the Shanghai Municipal P...[Details]
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This is a simple audio preamplifier circuit using a single transistor 2N3904.
This simple circuit provides good gain for weak audio signals such as electret microphones. Using it in fron...[Details]
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(1) Oscillation period = clock period: refers to the period of the oscillation source that provides the clock pulse signal for the microcontroller.
(2) State cycle: Each state cycle is twice the ...[Details]
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Jiwei.com reported that Wi-Fi 6, which was only released in mid-2019, is sweeping the wireless connection market at an unexpected speed. Last year, with the booming demand for routers, Wi-Fi 6 rece...[Details]
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introduction
At present, desktop electronic scales are widely used in commercial trade, but they have great limitations: large size, high cost, need for industrial frequency AC power supply, in...[Details]
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1. The EQU instruction is used to assign a value or register name to a specified symbol name.
Format: symbol name EQU expression
Symbolic name EQU Register name
The expression must be a simple ...[Details]
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1. Reasons for increased torque
It is very important to set the torque boost function. The most widely used power inverter is the variable frequency control mode. When the power frequency of t...[Details]
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There are two modes of STM8L interrupts, namely Pin mode and Port mode, which are the so-called line interrupts and port interrupts. In short, line interrupt means that the interrupts of the same pin...[Details]
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Character display program, phone call program: (The procedure needs to be improved) void Displaytxt(int x0, int y0, int who, U16 color )// Display number (16*32) { U16 txt = 0; U16 l = ...[Details]
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From August 22 to 23, the "2017 China Photovoltaic Product Quality Improvement Conference" jointly organized by the China Photovoltaic Industry Association, the National Solar Photovoltaic Product ...[Details]
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Apple may have struck a deal to stream the NFL on Apple TV+, but the partnership is staying mum, a new report claims. Apple is said to be in the lead in the bidding war for the NFL's Sunday Ticket ...[Details]
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Since their introduction, CMOS single-supply amplifiers have benefited single-supply system designers around the world. The main factors affecting the total harmonic distortion plus noise (THD...[Details]
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introduction
With the development of modern science and technology, inverter power supplies are widely used in all walks of life, which puts forward higher requirements for their performance. Tra...[Details]
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Nanjing Hexin Automation Co., Ltd. (hereinafter referred to as "Nanjing Hexin") was established in 2017. Its headquarters is located in Nanjing Xingang National Economic Development Zone. It has es...[Details]
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0 Introduction
Today, with the rapid development of power supply networks and the increasingly rational grid structure, the country has higher and higher requirements for the reliability o...[Details]
RF/Wirelessly
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