[align=left][color=#000]My device is 8127, I want to ask some basic questions about H264 encoding and decoding: [/color][/align][align=left][color=#000]1. Is the output of video M3 encoding in 8127, t...
I use stm32F103vb to control the synchronous motor for current sampling. It can generate SVPWM wave and sample the current of phase A\B. But I always feel that the current sampling value is not sample...
When we develop a hard disk driver, under Windows XP, the data exchange method between the memory and the hard disk is DMA, and each time it is fixed to 4K bytes. Can this length be changed? How to ch...
[font=宋体] After waiting for a long time, I finally got the board. Some forum friends have already posted unboxing photos, so I won't. [/font] [font=宋体] I got the board, connected it immediately, and s...
Now there are three ZigBee nodes. I burned the program of node 1 into the first ZigBee board through the ZigBee emulator, and then burned the program of node 2 into the ZigBee board of node 2. The com...
High efficiency and low standby power consumption are two major challenges in today's switching power supply design. Resonant topology or LLC topology is becoming increasingly popular because it ca...[Details]
In public places such as schools, government agencies, factories and mines, as well as public corridors in residential areas, the phenomenon of long-burning lights is very common, which causes a h...[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]
With the development and widespread application of computer technology, especially in the field of industrial control, computer communication is particularly important. Although serial communication g...[Details]
In the previous series, we have listed some basic knowledge of C language in Tables 1 to 3. We hope that beginners can strengthen their memory of the above tables and gradually learn to use them wh...[Details]
LED guardrail lights use fluorescent tubes or LEDs as light sources and continuous guardrails as carriers to form an approximately linear guardrail light strip. This article mainly introduces...[Details]
Since the late 1990s, with the demand for higher system efficiency and lower power consumption, the technological update of telecommunications and data communication equipment has promoted the deve...[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]
Rated capacity refers to the maximum output power of the UPS (the product of voltage V and current A).
Usually, the UPS power supplies sold on the market are marked with "W" (watt) for smaller...[Details]
(1) Open circuit voltage of the battery
(2) Internal resistance of the battery
(3) Battery operating voltage
(4) Charging voltage
Charging voltage refers to the voltage applied ...[Details]
As countries around the world are leaning towards the new energy battery industry, lithium-ion power batteries, as the ideal energy source for the development of the 21st century, are attracting mo...[Details]
As the automobile consumer market heats up, the safety performance of automobiles has attracted more attention from consumers. When driving at high speed, tire failure is the most worrying and diff...[Details]
When selecting EMC test equipment, we often encounter the following questions: What is the difference between an EMI receiver and a spectrum analyzer? Why should a receiver be used for EMI testing?...[Details]
1. Overview
Infrared temperature measurement technology plays an important role in product quality control and monitoring, online equipment fault diagnosis and safety protection, and energy co...[Details]
Do you have the basic terms of optics memorized? If not, read here.
Correlated Color Temperature: If the color of light emitted by a light source is closest to the color of light radiate...[Details]