Since the system clock is 50M, I want to get a low-speed clock like 1K for other modules, so I wrote a counter frequency division. But when synthesizing, it always prompts: Warning: Found 1 node(s) in...
Source: French Shield Salon
Recently, Aojie Technology Co., Ltd., an IPO issuer on the Science and Technology Innovation Board, disclosed a lawsuit involving a mobile phone baseband chip invention pat...
The designer combined modern labware with this old tool to create a design - inside the transparent test tube, the fiber wick wrapped in stainless steel is immersed in clear oil and fully absorbs the ...
Is it true that as long as it is a photoresistor, it can receive infrared signals, that is, when infrared rays are irradiated, the resistance will decrease, such as the photoresistor cds5528...
I saw on most forums that RETI can be used to return to the original program from an interrupt. It was also possible to use 51, but when I wrote a program, an error RETI was not defined when I compile...
Watches are one of the most complex products, and they are also the stage for the best experience of creativity. The new black color, as you can see from the picture, you will find that the movement a...
With the promotion of the construction of intelligent communities in the country, anti-theft systems have become essential equipment for intelligent communities. Especially in recent years, the urg...[Details]
Traditional broadcasting systems generally need to be operated manually at a fixed time, and can only realize one-way broadcasting with few functions. Traditional bell ringing equipment has a singl...[Details]
1. Circuit composition
The whole circuit consists of two parts:
1. Power saving control circuit
As shown in the figure below. Including delay circuit and drive circuit.
(1) Delay ci...[Details]
1. Introduction
With the growth of parking demand, the scale of parking lots is becoming larger and larger. A lot of research has been done on intelligent parking lots in China, but most of th...[Details]
Converged processors meet scalability requirements
In current embedded system design, solutions based on MCU, DSP, FPGA and ASIC account for more than 90% of the market share. These solutions ...[Details]
As cellular phones become more advanced, the power consumption of the system during operation and the power consumption during standby are also increasing. Therefore, the power management design of...[Details]
Introduction
Power subsystems are becoming more and more integrated into the overall system. Power systems have moved from being separate "essential dangerous devices" to being monitorable...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
1. Disadvantages of choosing too high a voltage level
Choosing too high a voltage level will result in too high an investment and a long payback period. As the voltage level increases, the...[Details]
We know that the inverter consists of two parts: the main circuit and the control circuit. Due to the nonlinearity of the main circuit (switching action), the inverter itself is a source of harmoni...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
The most important components of new energy electric vehicles are power batteries, electric motors and energy conversion control systems. The power battery must achieve high performance such as fas...[Details]
summary
This article will briefly analyze the success and shortcomings of high-frequency DC-DC switching power supplies in the process of miniaturization (the second basic goal), and propose m...[Details]
With the popularity of digital appliances, rechargeable batteries can be seen everywhere in people's daily lives and have become one of the indispensable daily necessities.
This article gives ...[Details]
Introduction
my country's rapid economic growth is mainly due to the development of manufacturing and the acceleration of urbanization. However, urbanization cannot be achieved at the expense ...[Details]
FPGA/CPLD
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