Hello, moderators and professional technicians: I am a new student. I have recently uploaded three learning materials. I am not able to evaluate the quality of the uploaded materials and the newness a...
[i=s] This post was last edited by qq849682862 on 2014-8-22 22:13 [/i] Signal Integrity Research Author: Dr. Yu Zheng April 10, 2009 Signal Integrity Research Original: Dr. Yu Zheng Contents Signal In...
[color=#333333][font=arial, 宋体, sans-serif, tahoma,]I followed the instructions and shorted tx and rx. Why can the SSCOM software only send but not receive? Also, the instructions say that after conne...
[i=s]This post was last edited by ianymu on 2016-9-20 09:30[/i] If you are interested, please contact Wow as soon as possible. All the accessories are new and have never been used. Because my previous...
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Application deadline: March 29
Development board introduction:
AT-START-F421 is based on the AT32F421C8T7 chip, and its peripherals include LED lights, buttons, and A...
As LEDs continue to improve in almost every aspect of performance and cost, LED lighting is being used in an increasingly wide range of applications, among which LED street lights are a focus of in...[Details]
1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
A standard cell
is an electrochemical
cell
used as a voltage reference standard in many electrical standards laboratories
. If properly maintained, standard cells are very stable. The ...[Details]
At very low temperatures, certain metals and alloys lose their resistance to electric
current
and become
superconductors
. Two parameters that are often measured are the transition ...[Details]
The TPS92210 is a single-stage LED lighting pulse width modulation (PWM) controller. The TRIAC dimmable solution not only regulates the LED current, but also achieves a power factor close to 1. The...[Details]
D5026A is a driver IC designed by Shanghai Debei Electronics for energy-saving LED display screens. Its design concept is energy-saving and compatible with existing solutions, that is, it can be ...[Details]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
At present, a large number of cooling tower fans, speed fans and special fans are in use in petroleum, chemical, pharmaceutical, metallurgical and other enterprises. Some fans have no monitoring in...[Details]
Car lights, whether headlights, fog lights or tail lights, play an important role in driving safety. However, the material of the car lights determines that the probability of damage in a collision...[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]
Direct digital frequency synthesis (DDS) has fast frequency switching and modulation capabilities and is widely used. However, when low power consumption and low cost are the main considerations, D...[Details]
Designing low power circuits while achieving acceptable performance is a difficult task. Doing so in
the RF
bands increases the challenge dramatically. Today, nearly everything has wireless...[Details]
In the past 20 years, although the inverters that use power transistors (GTR) as inverter power devices, 8-bit microprocessors as control cores, and realize asynchronous motor speed regulation acco...[Details]
High specific energy lithium/thionyl chloride (Li/SOCl2) batteries are widely used in multi-functional intelligent meters (such as smart meters, water meters, etc.) as real-time clocks and memory b...[Details]
IP STB interactive services that are constantly updated
The interactive digital content services that can be provided through the television system include television on demand (Vo...[Details]