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Abstract : This paper discusses the key technologies in the design of prepaid smart cold water meters. By comparing with IC cards, it is determined that Dallas' iButton information button TM card shou...
Why is it so hard to find the placement distance of multiple parallel power tubes on the Internet? When multiple power tubes are placed on a heat sink, how far should they be placed or how far should ...
Eight-way infrared remote control switch 072701 Infrared remote control playback Infrared remote control simulation Infrared fan remote control based on single chip · rar Comprehensive understanding o...
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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 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]
0 Introduction
With the development of society, people pay more and more attention to security work. Monitoring products have been used in various fields instead of being used only in importan...[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]
1. Tips for charging UPS for the first time
After purchasing a new UPS, plug the UPS into the 220V mains power grid and charge it for at least 12 hours to ensure that the battery is fully char...[Details]
In some motion control systems with simple control or low cost requirements, stepper motors are often used as actuators. The biggest advantage of stepper motors in such applications is that they ca...[Details]
Button cells (also called button cells) are those batteries with equal or larger diameter and height. The current size range of alkaline button cells is specified as follows: diameter 4.8mm-11.4mm,...[Details]
1 Introduction
With the rapid development of my country's economy, the country has introduced a series of policies such as preferential policies, subsidy policies, and old-for-new policies, wh...[Details]
O Introduction
For people who are in the wild, a question that they are more concerned about is the altitude of the place where they are. However, there are very few such products on the mar...[Details]
Motor vehicle garage management and control system
I. Usage requirements
1. There are 70 parking spaces in the garage, and each parking space is equipped with a door at the entrance. Ther...[Details]
The power supply has a great impact on the stability of the system during system operation. A power module with poor quality and stability will not only cause unstable system operation, but also cause...[Details]
There are a few electric car
charging stations
here and there
, which is fine. But if charging stations become common in cities, they will become an eyesore, with long, tangled blac...[Details]