1 Introduction Compared with traditional single-phase AC motors, PMSM motors have higher efficiency and lower noise, so they are widely used in household refrigerator compressors. A typical refrigerator electrical control system consists of two parts: ...
Recently, I have received inquiries from many friends. The general idea is that they want to install Xiaomi's smart home system. What matters should be paid attention to during decoration? I have summarized the following points, which can be regarded as a concentrated answer. ...
1. Ordinary version, output power 2x1W, 8 ohm load, no external power supply required, with DC volume adjustment potentiometer and power switch, working indicator LED, using high-end LM4866MT as power amplifier. 2. HI-FI grade USB ...
The car-specific voice circuit LM-04YD has four voices solidified, including "Reversing, please pay attention", "Left turn, please pay attention", "Right turn, please pay attention", and "Brake, please pay attention", which can be triggered independently ...
As shown in the figure is the principle diagram of the "Welcome, welcome to patronize" sound and light voice, music integrated circuit. The IC internally stores 2 segments. Welcome, welcome to patronize" voice information and 7 melodious, high-fidelity songs ...
The basic features of the speech synthesis chip UM5100 are: ① Low-power COMS process. ② Use continuous signal 8 modulator, adopt continuous variable slope incremental modulation (CVI, D). ③ UV5100 ...
Basic features: ① Adopts adaptive incremental (8) modulation (ADM) method. ② YYH40 has an addressing capacity of 512k bits. ③ The external memory can be one or two DRAMs. ④ The sampling frequency is 8 to 32 kbps. ⑤ ...
Basic features: ① Language recording and playback circuit ISD1000A series is divided into ISD1012A (12s, 10.6kbps), ISD1016A (16s, 8.0 kbps), ISD1020A according to the different recording and playback storage time and sampling rate. ...
Today, MEMS microphones are replacing electret condenser microphones (ECMs) in audio circuits. Both ECMs and MEMS microphones perform the same function, but each has a different connection to the rest of the system. ...
Basic features: ① The vP-1410 speech synthesis chip is a large-scale integrated circuit manufactured using CMOS technology and continuous variable slope incremental modulation technology (CVSD). ② The chip is suitable for connecting to static memory SRAM or ...
Introduction In this era of smart phones, smart phones have become an essential tool in everyone's life. They are not only a communication tool, but also a digital camera, game console, email box and even a wallet. ...
In the circuit schematic diagram IC1-4069, Y1 and Y2 form an oscillator with a frequency of 76KHZ. After being isolated and shaped by Y3-Y6, they are sent to the two-group frequency-conversion circuit composed of IC2 dual JK flip-flop CD4027 to generate symmetrical ...
Different from single-point active noise reduction technology, three-dimensional space active noise reduction must consider the analysis and modeling of the three-dimensional sound field. Ansheng Technology uses the world's most advanced sound field simulation and restoration technology and unique noise separation algorithm. ...
What is sound? Sound refers to other sounds besides human language and music, including the sounds of the natural environment, the sounds of animals, the sounds of machines and tools, and various sounds made by human movements. ...
As shown in the figure, it is a light-off reminder circuit. The circuit consists of a monostable delay circuit, a drive circuit, a buzzer, a light-emitting diode, etc. The output signal of the monostable delay circuit composed of 555, R1 and C3 controls the ...
Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.
Multithreaded computing in embedded real-time operating systems - based on ThreadX and ARMAn NVRAM management mechanism under an embedded real-time multi-partition operating systemA multi-core embedded real-time scheduling method based on core setDesign of an improved YOLOv3 infrared human body detection embedded systemRepYOLO, a lightweight deep learning network for embedded devicesReal-time responsive embedded system virtualized microkernel architectureImplementation Rules for Lead-acid Battery Production LicenseAssembler program to display Chinese charactersA good introduction to Struts2C++ GUI Programming with Qt 3 By Jasmin Blanchette, Mark SummerfieldGetting Started with ST Cortex-M0 MicrocontrollersBetter materials for learning ads development and debugging430 extended CAN (MC2510) source code programAbout USBM2004-21to51Storage optimization of sliding window image processing algorithm based on C6000EEWorld
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