針對交流電路過零檢測電路存在結構復雜、過零點檢測不準確、編程繁瑣等問題，設計了一種基于LM339的硬件結構簡單的過零檢測電路。通過仿真軟件Mulisim對該設計電路進行了仿真，實驗證明了該方案過零檢測的可行性、穩定性和可靠性，可直接作為交流電路中CPU的過零信號。Aiming at the problems of AC cilsuit zero crossing detection circuit such as complex structure, zero crossing detection and cumbersome programming, a zero crossing detection circuit with simple hardware structure based on LM339 was designed. The design circuit was simulated by simulation software Mulisim, and the feasibility, stability and reliability of zero crossing detection were proved by experiments, which can be used as zero crossing signal of CPU in AC circuit directly.
上傳時間： 2022-05-03
上傳用戶：
說明： msp430F系列單片機bootloader原理與實現完整版源碼、文檔及說明(Msp430F series microcontroller bootloader principle and implementation of the full version of the source code, documentation and instructions)
上傳時間： 2022-06-06
上傳用戶：kingwide
The information disclosed to you hereunder (the Materials ) is provided solely for the selection and use of Xilinx products. To the maximum extent permitted by applicable law: (1) Materials are made available"AS IS"and with all faults, Xilinx hereby DISCLAIMS ALL WARRANTIES AND CONDITIONS, EXPRESS, IMPLIED, OR ST ATUTORY, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY NON-INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE; and (2) Xilinx shall not be liable (whether in contract or tort. includina nealigence. or under anv other theorv of liabilitv) for any loss or damage of any kind or nature related to, arising under, or in connection with, the Materials (including vour use of the Materials), including for any direct, indirect, special, incidental, or consequential loss or damage (including loss of data, profits, qoodwill, or any type of loss or damage suffered as a result of anv action brought by a third party)
上傳時間： 2022-06-18
上傳用戶：
Jim Williams的經典著作，模擬電路設計。其中有很多的模擬電路和模擬集成電路的設計技巧。其中有一章用一個樹形結構講了電子學中的系統知識框架。
標簽： 模擬電路
上傳時間： 2022-06-25
上傳用戶：
CISPR 25:2016 Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of on-board receivers
標簽： EMC
上傳時間： 2022-06-29
上傳用戶：d1997wayne
開關電源PCB布局布線教材， 開關電源的PCB設計(布局、排版、走線)規范.pdf_電子/電路_工程科技_專業資料。比較詳細的講述了PCB布線的一些小技巧 。Specification for PCB design (layout, layout and routing) of | switch power supply. Pdf_ electronics/circuits _ engineering technology _ professional information. More detailed about the PCB wiring some tips
上傳時間： 2022-07-27
上傳用戶：
VIP專區-嵌入式/單片機編程源碼精選合集系列（123）資源包含以下內容：1. 研華數據采集卡c++ console程序多通道采集數據的例子.2. 基于AT89C51的電子秤方案,原理圖,程序.3. FAT32 study report,it s discrips the FAT332 stard , FAT32 學習筆記.4. 基于arm的嵌入式書籍.5. 三菱FX系列PLC密碼解密軟件.不需注冊..6. This guide reviews the rules and syntax of the principle commands that comprise C and its object-ori.7. 紅外遙控大全.8. ADI公司DDS芯片AD9830應用資料.9. ADI公司DDS芯片AD9832應用資料.10. ADI公司DDS芯片AD9833應用資料.11. ADI公司DDS芯片AD9834應用資料.12. PXA27x Processor Family Optimization Guide.13. ti的c2000的spi。有用的著的時候。可以在程序中測試spi口.14. *名稱：LCD12864顯示程序 功能：顯示英文.15. 89c51與ds1302代碼顯示時間的源程序.16. 51實驗板的原理圖！可以作為簡單的起步參考.17. 由于找不到安裝 紅旗需要的文件.18. W3100是WIZnet公司專門為以太網互聯和嵌入式設備推出的硬件TCP／IP協議棧芯片.19. 基于狀態轉換法設計的電機正反轉、調速PLC源程序.20. s3c4510b的源代碼以及并口JTAG下載調試程序.21. 介紹了實時嵌入式系統的相關內容,對于研究嵌入式很用用..22. 射頻讀寫模塊是采用最新Mifare技術的微型嵌入式非接觸式IC卡讀寫模塊。內嵌ISO14443 Type A協議解釋器,并具有射頻驅動及接收功能,可以簡單實現對MifareOne等卡片的讀寫操作,讀寫.23. AT91SAM7S64開發板的ADS范例for ATMEL S64-EKAT91SAM7S64-BasicMouseUSB.24. ds18b20的一個完整程序.25. 我的一個交通燈的課程設計.26. mcuzone的AT91RM9200EK底板原理圖Rev2.0.27. 有關I2C設計的資料. 有關I2C設計的資料..28. cmos的教程.29. This designs demonstrates how to use the Ethernet port using a Nios II system on the DE2 board. It s.30. 低頻數字式相位測量儀.31. 使用C C++ 開發嵌入系統 詳細實例 很實用.32. 270開發板串口擴展測試程序,arm9 工控板測試.33. 利用PCB上的走線實現高頻低通濾波器的設計.34. LPC２１３１ 對大家和有幫助的.35. 這是一個AVR單片機的紅外遙控程序.36. 嵌入式實時操作系統psos的系統調用手冊.37. 題目1：DSB調制與解調電路的MATLAB實現及調制性能分析 題目2：SSB調制與解調電路的MATLAB實現及調制性能分析 題目3：AM調制與解調電路的MATLAB實現及調 題目5：PM調制與解.38. 該PDF文檔是CPLD/FPGA的入門教程。里面敘述了PLD的基本結構.39. 51單片機+max7219驅動實例 8位LED同時循環顯示1-9.40. 嵌入式系統中U-Boot基本特點及其移植方法.
上傳時間： 2013-07-21
上傳用戶：eeworm
Analysis and Design with UML:Benefits of Visual Modeling History of the UML Visual Modeling with UML The Rational Iterative Development Proce
上傳時間： 2015-09-21
上傳用戶：aig85
< Co-Verification of Hardware and Software for ARM SoC Design>> by Jason R. Andrews
標簽： R. Co-Verification Hardware Software
上傳時間： 2015-10-03
上傳用戶：zhaiyanzhong
The Business Benefits of EJB and J2EE Technologies over COM+ and Windows DNA This whitepaper highlights the business advantages of the J2EE architecture over Windows DNA. For a technical analysis of these two architectures, please see the accompanying whitepaper, The Technical Benefits of EJB and J2EE Technologies over COM+ and Windows DNA.
標簽： Technologies whitepaper and Business
上傳時間： 2014-01-17
上傳用戶：1427796291
