家用对讲机-毕业设计

家用对讲机

学生：XXX 指导教师：XXX

内容摘要:如果在家庭内部装设对讲电话,将会给生活带来不少方便。为了方便家庭内部通话，本文采用图文结合的方式特别介绍一种家用直通对讲电话机,它使用两台普通电话机,配上控制电路和电源,利用模拟电子技术等相关知识，通过分析和计划，设计电路图，利用手工焊接技术及调试，完成家用对讲电话的制作。本设计包括电源，极性保护电路、振铃电路、拨号电路、受话电路、送话电路等几部分。家用对讲电话的原理是将声波通过话筒转换成话音电流，热后传送给对方的电路，

经过对方的电路进行放大再

经扬声器还原成声音从而对方可以进行通话。

本话机的功能在于实现呼叫和通话功能。家用对讲电话的特点是可供小型单位作内部电话使用，此外由于采用成品电话机,从而使制作变得很简单,成本也很低。家用对讲电话实现了家庭内部的通话，为人们的日常生活带来了极大的方便，值得进一步推广，有很好的发展前景。电子技术的研究才刚刚开始，随着这项技术的研究逐渐深入，涉及的研究领域也将更广。希望这项技术的研究能为人们以后的生活、工作带来更大的便利，为人们提供更为舒适、完美的生活方式。

关键词：对讲电话图文结合成本低

Home intercom

Abstract：If the installation of intercom within the family, will bring a lot of convenience to life. For the convenience of home intercom, graphics combined with special presentation of a homethrough intercom phone, which uses two ordinary telephones, coupled with the control circuit and power supply, the use of analog electronic technology and knowledge, through analysis and plan, schematic design, the use of manual welding technology anddebugging, to complete the production of home intercom. The design includes a powersupply, polarity protection circuit, ringing circuit, dial-up circuit, by then circuit, transmittercircuit parts. The principle of home intercom is converted into sound waves through themicrophone voice current, the heat transmitted to the other side of the circuit, and zoomthrough each other's circuit, and then back into sound by the speaker so that the other party can call.

The functionality of this phone is to call and call functions. Home intercom feature isavailable for small units to use for internal calls. In addition the use of the finished phone, so that production becomes very simple, the cost is very low. Home intercom phone callwithin the family, brought great convenience to people's daily lives, it is worth to further promote good development prospects. Electronic technology has only just begun, withthe gradual deepening of this technology, involved in research areas will also be wider.Hope this technology can people later in life, working to bring greater convenience for people to provide a more comfortable, the perfect way of life.

Keywords: Intercom Graphic combination Low cost

目录

前言 (1)

1 元器件基本知识 (1)

1.1 电阻 (1)

1.1.1 电阻的定义 (1)

1.1.2 电阻器阻值标示方法 (2)

1.2 电容 (3)

1.2.3 电容的单位 (3)

1.2.4 电容的耐压单位V（伏特） (3)

1.2.5 电容的种类 (4)

1.3 发光二极管 (7)

1.4 三极管 (9)

2 电路 (11)

2.1 电路图结构 (11)

2.2 工作原理 (13)

3 手工焊接 (13)

3.1 焊接的概念 (13)

3.2 焊接步骤 (13)

3.3 焊接注意事项 (14)

4 调试与测试 (14)

4.1 调试准备—检查电路 (14)

4.2 通电观察 (14)

4.3 调试 (14)