Remote monitoring telephone circuit schematics
资源简介：Remote monitoring telephone circuit schematics
上传时间： 2016-09-01
上传用户：84425894
资源简介：wireless telephone circuit and analysis
上传时间： 2014-10-30
上传用户：气温达上千万的
资源简介： 针对煤矿井下调度及紧急救援系统的需求，以DTMF编解码模块为核心，设计了具有自动拨号功能的新型电话系统。该系统利用MT8880对DTMF信号的编解码功能实现一键拨号和远程设置，通过检测振铃和忙音信号，完成自动摘机和挂机过程，配合AGC等外围电路达到话音...
上传时间： 2014-11-18
上传用户：ly1994
资源简介： Industrial remote monitoring systems and keep-alivecircuits spend most of their time in standby mode. Manyof these systems also depend on battery power, so powersupply effi ciency in standby state is very important tomaximize battery l...
上传时间： 2013-11-23
上传用户：新手无忧
资源简介：S3C2410 schematics and circuit diagram
上传时间： 2017-03-06
上传用户：SimonQQ
资源简介：remote notice board implementation using GSM source code with schematics are provided
上传时间： 2017-07-27
上传用户：wff
资源简介： Low power operation of electronic apparatus has becomeincreasingly desirable. Medical, remote data acquisition,power monitoring and other applications are good candidatesfor battery driven, low power operation. Micropoweranalog circuit...
上传时间： 2013-10-22
上传用户：rocketrevenge
资源简介：Because WDM networks are circuit switched loss networks blocking may occur because of lack of resources. Also in circuit switched networks many paths use the same links. This toolbox answers the question how different paths with different l...
上传时间： 2017-07-28
上传用户：zhangzhenyu
资源简介：AD9923A_ICX445AKA schematics
上传时间： 2013-07-26
上传用户：gpyz253344
资源简介：·Phase-Locked Loop circuit Design
上传时间： 2013-04-24
上传用户：lhc9102
资源简介：资料->【E】光盘论文->【E5】英文书籍->CMOS Logic circuit Design (英).pdf
上传时间： 2013-05-22
上传用户：ecooo
资源简介：ATmega128 circuit for ORCAD
上传时间： 2013-09-10
上传用户：xuanjie
资源简介： This application note features 8-, 10-, and 12-bit dataacquisition components in various circuit configurations.The circuits include battery monitoring, temperature sensing,isolated serial interfaces, and microprocessor andmicrocontrol...
上传时间： 2014-01-15
上传用户：zq70996813
资源简介： Portable, battery-powered operation of electronic apparatushas become increasingly desirable. Medical, remotedata acquisition, power monitoring and other applicationsare good candidates for battery operation. In some circumstances,due ...
上传时间： 2013-12-20
上传用户：Wwill
资源简介：设计了水声信号发生系统中的功率放大电路，可将前级电路产生的方波信号转换为正弦信号，同时进行滤波、功率放大，使其满足换能器对输入信号的要求。该电路以单片机AT89C52，集成6阶巴特沃思低通滤波芯片MF6以及大功率运算放大器LM12为核心，通过标准RS232接口...
上传时间： 2013-11-20
上传用户：qwe1234
资源简介：I.1 IntroductionI.2 Analog Integrated circuit DesignI.3 Technology OverviewI.4 NotationI.5 Analog circuit Analysis Techniques
上传时间： 2013-10-29
上传用户：jokey075
资源简介：The circuit Designer’s Companion Second edition Tim Williams
上传时间： 2013-11-04
上传用户：fredguo
资源简介：Linear Technology’s high performance battery management ICsenable long battery life and run time, while providing precision charging control, constantstatus monitoring and stringent battery protection. Our proprietary design techniques sea...
上传时间： 2013-10-13
上传用户：yyq123456789
资源简介： Abstract: It is critically important that lithium-ion battery stacks have a good battery-management system for monitoring many cellvoltages and cell temperatures. Without that monitoring, thermal runaway can lead to a battery explosion...
上传时间： 2013-10-29
上传用户：xwd2010
资源简介： Portable, battery-powered operation of electronic apparatushas become increasingly desirable. Medical, remotedata acquisition, power monitoring and other applicationsare good candidates for batteryoperation. In some circumstances,due t...
上传时间： 2013-10-30
上传用户：hz07104032
资源简介：AVR32801: UC3A3 Schematic Checklist Features • Power circuit • Reset circuit • USB connection • External bus interface • ABDAC sound DAC interface • JTAG and Nexus debug ports • Clocks and crystal oscillators • MMC, ...
上传时间： 2014-12-26
上传用户：DXM35
资源简介：从系统硬件设计和软件构成上，介绍一种以AT89C52单片机为核心,通过无线遥控方法实现对预设电话自动拨号报警的智能呼救系统。系统提供了患者在紧急情况下无法使用电话报警时的一种报警手段。由用户预设的多组电话号码作为语音报警对象,预录可长达20 s的语音信...
上传时间： 2013-11-19
上传用户：wd450412225
资源简介：基于幅移键控技术ASK（Amplitude-Shift Keying），以C8051F340单片机作为监测终端控制器，C8051F330D单片机作为探测节点控制器，采用半双工的通信方式，通过监控终端和探测节点的无线收发电路，实现数据的双向无线传输。收发电路采用直径为0.8 mm的漆包线自行...
上传时间： 2013-10-19
上传用户：xz85592677
资源简介： 为解决输油管道温度压力参数实时监测的问题，设计了以C8051F930单片机作为控制核心的超低功耗输油管道温度压力远程监测系统。现场仪表使用高精度电桥采集数据，通过433 MHz短距离无线通信网络与远程终端RTU进行通信，RTU通过GPRS网络与PC上位机进行远程...
上传时间： 2013-11-07
上传用户：cuibaigao
资源简介：Features• Complete DTMF Receiver• Low power consumption• Internal gain setting amplifier• Adjustable guard time• Central office quality• Power-down mode• Inhibit mode• Backward compatible withMT8870C/MT8870C-1Applications• Receiver...
上传时间： 2013-11-20
上传用户：mpquest
资源简介：The PCA9670 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plusfamily.The PCA9670 is a drop-in upgrade for the PCF8574 providing hig...
上传时间： 2013-10-15
上传用户：stella2015
资源简介：The PCA9671 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plus(Fm+) family.The PCA9671 is a drop in upgrade for the PCF8575 providi...
上传时间： 2013-10-12
上传用户：laomv123
资源简介：The PCA9672 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plusfamily.The PCA9672 is a drop-in upgrade for the PCF8574 providing hig...
上传时间： 2013-10-23
上传用户：jasonheung
资源简介：The PCA9673 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plusfamily.The PCA9673 is a drop in upgrade for the PCF8575 providing hig...
上传时间： 2013-10-29
上传用户：wkchong
资源简介：摘要：本水位监测报警器使用5V低压直流电源（也可以用3节5号电池代替）就可以对5~15厘米的水位进行监测，用LED显示和数码管显示水位，并可以对不再此范围内的水位发出报警。主要采用CD4066、74LS86、74LS32、CD4511芯片，再加上数码管、蜂鸣器、发光二极管、...
上传时间： 2013-11-05
上传用户：王庆才
