文档介绍：武汉工程大学电气信息学院课程设计-1- 摘要方波发生器在各理工科实验中具有广泛的应用,同时在生活中的数字设备、家用电器、电子玩具等许多领域也有需求。方波信号是一种应用极为广泛的信号,它在科学研究、工程教育及生产实践中的使用也非常普遍。它通常作为标准信号,应用于电子电路的性能试验或参数测量。另外,在许多测试仪中也需要标准的方波信号检测一些物理量。方波产生电路可以由迟滞比较器和 R、C基本回路构成,也可以由 555 定时器加一些电阻、电容组成外围电路构成。滤波电路也在电子电路中也有较大的应用,例如人们往往要得到某种特定频率的信号,而实际输入的包含有各种频率的信号,这时就要用到与之相对应的滤波电路滤去不需要频率的信号,而保留人们想要频率的信号。构成滤波电路的有低通滤波、高通滤波及带通滤波电路,本设计是基于二阶带通滤波电路的一个中心频率为 10KHZ 的滤波电路。关键字:迟滞比较器;二阶无线增益带通滤波电路;中心频率 Abstract Square wave generator in the science and engineering experiment has wide application, and at the same time in the life of the digital equipment, home appliances, electronic toys, and many other areas also have demand. Square wave signal isa kind of application of the signal, it is widely in scientific research, engineering education and the use of the production practice and is very popular. It is usually used as standard signal, used in electronic circuit performance test or parameter measurement. In addition, in many tester are required in the standard square wave signal detection some physical quantities. Produced by square wave circuit can parator and R C, basic circuit structure, by555 the timer add some resistance, capacitance ofa peripheral device. Filter circuit is also in electronic circuits also have larger applications, such as people tend to get a specific frequency of the signal, but the actual input contains various frequency signal, would then use with the corresponding filter circuit to filter the frequency of the signal don't need and keep that people want to frequency signal. Constitute the filter circuit with low pass filter high-pass filter, and bandpass filter circuit, the design is based on second-order band-pass filter circuit ofa center frequency for 10 KHZ filter circuit. Key words: parator; Second order wireless gain bandpass filters circuit; Center frequency 武汉工程大学电气信息学院课程设计-2- 绪论设计目的由于在课堂上学****的都是一些纯粹的理论知识,没有在实践中得到检验,始终无法令人信服。本设计基于对滤波电路的基础上对信号处理做了一个简单大设计,可实现当输入一个方波时,输出同频率的正弦波,完成方波到正弦波的转化,通过设计可以将所学的电子技术知识运用到实际上,加深对滤波电路、方波产生电路