NE555多谐振荡电路课程设计
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目录
摘要 (2)
1 设计任务和要求 (4)
1.1:设计任务 (4)
1.2 :设计要求 (4)
2 方案比较与论证 (4)
2.1:稳压电源通常由 (4)
2.2 :方案论证 (8)
3 硬件设计................................................................................................................... 错误!未定义书签。
3.1 :设计思想................................................................................................... 错误!未定义书签。
3.2 :称功能模块............................................................................................... 错误!未定义书签。
4 系统仿真 (8)
4.1 :仿真原理图如下: (8)
5系统的组装................................................................................................................ 错误!未定义书签。
5.1 :PCB版板图................................................................................................ 错误!未定义书签。
6 结论: (9)
参考文献:................................................................................................................... 错误!未定义书签。附录一:电路原理图................................................................................................... 错误!未定义书签。:元件列表................................................................................................................... 错误!未定义书签。
摘要:
随着电力电子技术的高速发展,电力电子设备与人们的工作、生活的关系日益密切,而电子设备都离不开可靠的电源,进入80年代计算机电源全面实现了开关电源化,率先完成计算机的电源换代,进入90年代开关电源相继进入各种电子、电器设备领域,程控交换机、通讯、电子检测设备
电源、控制设备电源等都已广泛地使用了开关电源,更促进了开关电源技
术的迅速发展,555是一种应用特别广泛作用很大的的集成电路,属于小
规模集成电路,在很多电子产品中都有应用。ne555的作用是用内部的定时器来构成时基电路,给其他的电路提供时序脉冲,而开关电源(英文:Switching Mode Power Supply),又称交换式电源、开关变换器,是一种高频化电能转换装置。其功能是将一个位准的电压,透过不同形式的架构转换为用户端所需求的电压或电流。开关电源就是利用电子开关器件(如晶
体管、场效应管、可控硅闸流管等),通过控制电路,使电子开关器件不
停地“接通”和“关断”,让电子开关器件对输入电压进行脉冲调制,从
而实现DC/AC、DC/DC电压变换,以及输出电压可调和自动稳压
关键词:NE555,开关电源,稳压电路:
Abstract:With the rapid development of power electronics technology, power electronic devices and is closely related to people's work and life, and the electronic equipment is inseparable from the reliable power supply, into the 80 s is made up of the computer power supply switch power supply, power generation, the first complete computer into the switch power supply in the 90 s have entered various electronic, electrical equipment, program-controlled switches, communications, electronic test equipment such as power supply, control equipment power supply has been widely used for switching power supply, more promote the rapid development of the technology of switching power supply, 555 is a special widely used large integrated circuit, belong to the small-scale integrated circuit, are used in many electronic products. Ne555 role is to use internal timer to constitute the time-base circuit, to other provide temporal pulse circuit, and Switching Power Supply (English: Switching Mode Power Supply), also