Description: 用89c2051模拟产生dtmf信号，广泛用于防盗报警、电话数据传输等；节省发号及收号电路，成本低。-with 89c2051 simulation of DTMF signals, widely used in anti-theft alarm, telephone data transmission; Savings and resumption of the circuit, and low cost. Platform: |
Size: 2216 |
Author:徐中阳 |
Hits:
Description: 用89c2051模拟产生dtmf信号，广泛用于防盗报警、电话数据传输等；节省发号及收号电路，成本低。-with 89c2051 simulation of DTMF signals, widely used in anti-theft alarm, telephone data transmission; Savings and resumption of the circuit, and low cost. Platform: |
Size: 2048 |
Author: |
Hits:
Description: 电话远程控制的想法已有一段是时间，现在就可以让你自已做一个电话摇控，这是程序和电路烀-Telephone remote control for some of the ideas is the time, now can let you own a phone to do remote control, this is the procedure and circuit烀 Platform: |
Size: 41984 |
Author:haoquan |
Hits:
Description: 电话拨号防盗警装置由单片机控制器AT89C2051,脉冲拨号电路,数码管显示电路以及触摸开关构成,源代码使用单片机C,使用KEIL C编译器.-Telephone dial-up anti-theft alarm device by the single-chip controller AT89C2051, pulse dialing circuit, a digital display and touch switch circuit consists of the source code to use single-chip C, using the KEIL C compiler. Platform: |
Size: 3072 |
Author:yaoliang |
Hits:
Description: 基于EXCEL宏的拨号程序，可以实现批量电路拨测、批量电话拨测，自动记录时间和结果。-EXCEL macro-based dial-up procedures can be achieved volume dial circuit measurement, measured quantities telephone call, automatically records the time and results. Platform: |
Size: 164864 |
Author:xuxiaodong |
Hits:
Description: 电话机的工作原理,有振铃电路,电话极性保护电路,还有双音多频发送接收电路-Telephone the working principle, has ringing circuit, Phone polarity protection circuit, as well as send DTMF receiver circuit Platform: |
Size: 57344 |
Author:徐徐 |
Hits:
Description: 电话智能遥控器主要包括电话振铃检测电路，电话自动摘机和挂机电路，DTMF信号解码电路，语音提示急电路，音频放大电路，以及控制心脏CPU电路-Telephone remote control including smart phones ringing detection circuit, telephone and hang up automatically pick circuit, DTMF signal decoding circuit, urgent voice circuits, audio amplifier and the control of the heart CPU circuit Platform: |
Size: 7168 |
Author:卿卿 |
Hits:
Description: Holtek公司新近推出的DTMF电路HT9200A便是专用于电话联网控制的模块，它可以方便地与微控制器系统接口，以便组成智能型电话网络的测控系统-Holtek company recently introduced is the DTMF Circuit HT9200A telephone network dedicated to the control module, which can be easily and micro-controller system interface to form intelligent telephone network control system Platform: |
Size: 205824 |
Author:王立阳 |
Hits:
Description: MT8880的拨号子程序，适合电话报警电路的设计。原理很简单，要增加电话号码，就可以自己增加一个数组就可以了。-MT8880 dial-up routines for a telephone circuit. The principle is very simple, to increase the phone number, you can add an array of their own on it. Platform: |
Size: 1024 |
Author:HIGER |
Hits:
Description: 电话线出现断线或短路故障时，线路的阻抗则发生很大变化，利用电桥法测试出电阻的大小，进而得出线路故障的地方-Telephone lines appear disconnection or short circuit fault, the line impedance is changed, test out the size of resistance by Wheatstone bridge method, and then draw the line fault place
Platform: |
Size: 7168 |
Author:jeason |
Hits:
Description: 本文介绍的电路就能实现这个功能，该电路接到原电话机的电话线上使用，不需要人员的操作，能自动的、及时的完成报警和发出警报的动作。-This article describes a circuit can achieve this functionality, the circuit connected to the original use of the telephone line telephone operator does not need staff that can automatically and timely completion of alarm and alert action. Platform: |
Size: 1114112 |
Author:王菲 |
Hits:
Description: 利用单片机为主控芯片，通过检测按键是否按下来启动定时门铃，利用定时器控制蜂鸣器发出叮咚，此设计的门铃次数可调节，通过数码管显示调节的响铃次数与响铃时剩余的响铃次数。（附有PROTUES8.1仿真电路）-Using the MCU as the main control chip, by detecting whether the button is pressed to start the timer doorbell, the use of timer control buzzer issued buzz, the number of adjustable doorbell design, The number of rings. (With PROTUES8.1 simulation circuit) Platform: |
Size: 24576 |
Author:David |
Hits:
Search - Telephone Circuit