I use pure hardware to make a three-phase inverter, with sine waves from LM358 and triangle waves from 555. I use LM358 to compare the SPWM, and the phase difference is 120. But when the input voltage...
Some time ago, I posted a thread about the LCR measurement circuit, and I have some ideas. https://bbs.eeworld.com.cn/thread-476594-1-1.html Under normal circumstances, LCR measurement should use two ...
Abstract In the post-PC era, more and more fields require the support of embedded systems. Traditional embedded system development methods can no longer meet the growing complexity and quality require...
Every time a new mobile phone standard is released, we see new claims about the “end of Wi-Fi.” When 3G was announced, there were promises that the advent of the technology would lead to the rise of W...
I would like to ask you: When I am routing in Protel DXP, when I click on the pad to be routed, only the pad of this network is displayed, and the pads of other networks disappear. When I exit the rou...
[Evaluation and experience of Zhongke Yihaiwei EQ6HL45 development platform] +03. Flowing light simulation and board test (zmj)
The Zhongke Yihaiwei EQ6HL45 development platform provides a very rich i...
In early 2002, I started to write a working program for an IC card prepaid electricity meter. The meter used Philips' 8-bit 51-expanded single-chip microcomputer
87LPC764
, and wa...[Details]
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[Details]
China's new energy vehicles are in a transition period from research and development to real industrial development. In 2012, with the intensive launch of new energy vehicle policy planning, the de...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
1. Background:
The instrument system parameter detection and control of the chemical production workshop of Tangshan Coal Gas Coking Plant are all analog instruments, some of which are eve...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[Details]
LED lighting: Basic circuit design can be completed in as little as one day
Semiconductor manufacturers are also getting involved in the LED lighting business. The power circuit of LED req...[Details]
The ARINC429 bus is one of the most commonly used communication buses between various subsystems of avionics. As the "skeleton" of modern avionics systems, once the bus system or the attached airbo...[Details]
The emergence and development of street lamps are inseparable from the prosperity and progress of cities, which makes street lamps useful. Conversely, street lamps also make the night of the city n...[Details]
Features
POE technology can ensure the safety of existing structured cabling while ensuring the normal operation of the existing network and minimizing costs. The IEEE 802.3af standard is ...[Details]
Dual Tone MultiFrequency (DTMF) signaling is gradually being used in push-button telephones around the world. It quickly replaced the dial pulse signaling used in traditional rotary phones because ...[Details]
When developing electronic products with processors, how to improve anti-interference ability and electromagnetic compatibility?
1. The following systems should pay special attention to anti-...[Details]
TMC428 is a stepper motor motion controller from TRINAMIC. It can reduce the workload of motor control software design and development costs. The 3-axis stepper motor drive control system based on ...[Details]
Voltage hysteresis is a characteristic of lithium-ion battery and the basis of its existence. The principle is as follows: the thionyl chloride electrolyte of the battery is a strong oxidizing chem...[Details]
1 Introduction
The function of the material transport vehicle is to lift the mixed finished materials into the finished material storage bin. In the early mixing equipment, the material transpo...[Details]
Power technology
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