[backcolor=rgb(239, 245, 249)]I use a 28335 chip to control an optocoupler. The rectangular wave is normal when it passes through the optocoupler and reaches the IPM. I add 15 or 20V to the IPM module...
Question: What is the problem if the counter does not work? The boards have these chips: 74373 (02 08 10 21 07 32 175 154 138 245 573), 8155, 12887, cy7c136, W78E516B, oks1235, etc. I don't use 74193....
[b][color=black]When it comes to LED drive accuracy, constant current error usually comes to mind. In fact, drive accuracy is not limited to current accuracy. LED is a typical current-driven device. A...
I made a dual-tube forward switching power supply, and I wanted the output power to be 150W, but when I actually measured it with a 1 ohm resistor, it was only about 6A, which means the actual output ...
[color=#3e3e3e][font=Tahoma, Arial, sans-serif] The conversion between DC and DC mainly refers to the conversion of electrical energy from the voltage value of a DC current to another voltage value. [...
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Abstract
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RFID technology will be ubiquitous in the future, and there is no doubt about it, because it brings convenience and timeliness to people, which means efficiency and...[Details]
This article introduces a miniature home electrocardiograph. The instrument has powerful functions: display monitoring, storage, playback, printing, record management, power alarm, telephone or Intern...[Details]
In some warehousing management, manufacturing, meteorological observation, scientific research and daily life, the requirements for temperature and humidity are common. For example, the "Interim Pr...[Details]
1 Introduction
In the current test field, the correlation detection method is increasingly widely used for filtering. Correlation filtering can easily separate a signal of a specific frequency...[Details]
0 Introduction
Metal halide lamp (MHL) as a green lighting source has been widely used in the field of indoor and outdoor lighting. However, when using this green lighting source, the matc...[Details]
Chapter 1 Proposal
Endless salespeople interrupt your normal work schedule;
Employees leave their work stations without permission during working hours;
Unauthorized persons ente...[Details]
introduction
Mobile phones, MP3 players, hard disk players, digital cameras, PDAs and other devices are all controlled by navigation keys. Currently, the more popular navigation key contro...[Details]
Touch sensors have been in widespread use for many years, but recent advances in mixed-signal programmable devices have made capacitive touch sensors a practical, value-added alternative to mechani...[Details]
Advances in 3D semiconductor packaging technologies have enabled the form and functionality of many of the products we use every day, such as mobile phones, personal entertainment devices, and flas...[Details]
introduction
In simple single-chip microcomputer application systems, the foreground/background system is widely used. The application is an infinite loop, in which the corresponding funct...[Details]
1 Introduction
The research is about a basic human parameter tester that can measure parameters such as body temperature, pulse and breathing interval. These parameters and records are the...[Details]
introduction:
With the development of power electronics, the application scope of inverter control technology and industrial field bus is becoming wider and wider. This system successfully...[Details]
Abstract: An anti-collision system for automobiles is designed and developed. Based on the ultrasonic principle, the anti-collision system transmits and receives ultrasonic signals, measures the t...[Details]
0 Introduction
In the field of digital signal processing, filters are undoubtedly a very important link. Among digital filters, finite impulse response (FIR) filters are particularly widely us...[Details]
Four-channel programmable digital down converter HSP50216 and its application in software radio
1 Introduction
Software radio originated from the graveyard of Speakeasy tactical commu...[Details]