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The author used the EM78P447 chip in the development of a smart water meter, and has a deeper understanding of the EM78 series chips. In practice, he summarized some issues that should be paid attenti...[Details]
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The market demand for Class D audio power amplifiers is growing at a rate of about 50% per year, with high-performance devices as the target application. The high energy efficiency and low heat dissi...[Details]
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In an SMPS, the circuit clamps the input AC voltage to a safe level at which the power MOSFET operates.
Most isolated, offline SMPS (switching power supplies), including flyback, forward and...[Details]
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Jiwei.com reported on December 28 that Lei Jun recently wrote that in response to the call for environmental protection of science and technology, the Xiaomi Mi 11 will no longer come with a charger ...[Details]
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USB interface is indispensable, FTDI launches new product VNC2
USB interface has become an indispensable interface for today's digital electronic products. Products and solutions around US...[Details]
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Power MOSFET has become the best choice for rectifier components of switch-mode power supplies (SMPS) with its outstanding advantages of low on-resistance and large load current. The emergence of d...[Details]
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There are three methods: battery phase determination method, current test method, and residual magnetism method. Residual magnetism method: This method is only applicable to motors with residual ma...[Details]
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1. Experimental purpose
1. Master the simple use of P3 port and P1 port.
2. Learn to write and use delay programs.
2. Experimental content
1. Experimental principle diagram:
...[Details]
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TM32 external interrupt is a process in which when some external event occurs, the interrupt system of the microcontroller will force the CPU to suspend the executing program and turn to handle the i...[Details]
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According to Tianyancha APP, on October 19, Huawei Technologies Co., Ltd. disclosed the patent of "Motion Posture Recognition Method, Terminal Equipment and Storage Medium", with publication number C...[Details]
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Source: Peking University EDA Research Institute, Peking University Electronic Design Automation Research Institute
Peking University EDA Research Institute was jointly established...[Details]
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Nowadays, the switching speed and signal slew rate of electronic circuits (such as mobile phones, servers, etc.) are higher than before, while the chip packaging and signal slew rate are getting smal...[Details]
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The driving force behind the development of ultra-high power density motor drive systems is: with the same volume or mass, the output power is greater, the overtaking acceleration capability and hi...[Details]
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* The read and write programs of x25045 are written in c51*/ #define CS P2.7 /*MCU p2.7 is the chip select, you can change it to your actual pin*/ #define SO P2.6 /*Data output*/ #define SK...[Details]
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According to Juheng.com, the COVID-19 pandemic has led to poor mobile phone sales. In order to reduce inventory, Apple has recently launched a price war in the Chinese market. The price of the iPhone...[Details]