[i=s]This post was last edited by dontium on 2015-1-23 13:28[/i]IC1's TXD pin sends a code (high or low level) to control the on and off of Q1. When Q1 is turned on, SAW starts to work, the TXD signal...
Dear experts: I am a newbie and I have a problem. I hope to get your advice. Thank you very much! I am using an LPC2106 with an ARM7 core. I used a 20-pin H-JTAG download cable to download the FLASH p...
Dear forum elder brothers and sisters, I am recently making a light with photosensitive control + PIR human body induction, powered by three AA batteries connected in series. Recently, I have encounte...
I want to ask if the current of the voltage-dividing optocoupler will be too small. I have simulated this circuit and manually soldered the board, and the results are consistent with the simulation re...
The analog chip is powered by positive and negative 15V, but it needs a Vlogic power supply. How should this Vlogic be handled? Because the digital ground and analog ground are separated, how should t...
[i=s]This post was last edited by Sur on 2013-12-23 10:20[/i] Let me first talk about the good things. The @ function has been added. Haha, I'll try it first@@Sur, the advanced mode is better than bef...
Do you often have to add brake fluid to your car's brakes? The fact that you need to pump out the brake fluid to make sure there is no gas in the brake fluid line may not be done by the car owner h...[Details]
The Mobile Industry Processor Interface (MIPI) Alliance is an organization responsible for promoting the standardization of software and hardware in mobile devices. It has released the D-PHY specif...[Details]
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]
For a long time, due to the limitation of hardware conditions, the display devices of traditional small handheld devices such as PDA are usually monochrome LCD, and the user interface is very simpl...[Details]
1 Introduction
Ultrasonic waves have strong directivity, slow energy consumption, and can propagate over long distances in a medium, so they are used for distance measurement. Ultrasonic detec...[Details]
LED lamps and bulbs are now rapidly replacing incandescent, halogen and CFL (compact fluorescent lamp) light sources in many general lighting applications. Flyback DC/DC converters are the power su...[Details]
Capacitance Measurement
Used to verify that capacitors meet the manufacturer's specifications. For quality control, a group of capacitors may be placed in an environmental chamber and the cap...[Details]
Introduction
Automakers are working to reduce vehicle weight to reduce CO2 emissions and improve fuel efficiency. Designers are therefore seeking new technologies and design techniques that can...[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]
At present, how various communication technologies will evolve after 3G is a focus of great concern in the industry. Especially for TD-SCDMA, whether it can achieve smooth evolution to the next gen...[Details]
The invention of the steam engine ushered in the first conversion of internal energy and mechanical energy for mankind, and the birth of the internal combustion engine at the end of the 19th centur...[Details]
Abstract: In order to realize wireless automatic alarm and monitoring of major safety places, based on the basic principle of pyroelectric infrared sensing, a detector for receiving infrared radia...[Details]
In order to prevent the lithium battery from being damaged by abnormal conditions such as overcharge, over discharge, and overcurrent, a lithium battery protection device is usually used to prevent...[Details]
0 Introduction
In the design and construction of communication systems,
communication power supply
is called the heart of the communication system. The power supply system will dire...[Details]
Analogue and Mixed Signal
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