登录
首页 » Visual C++ » cheng

cheng

于 2011-07-17 发布 文件大小:1597KB
0 148
下载积分: 1 下载次数: 12

代码说明:

  滤波器广泛应用于数字信号处理、通信、自动控制领域,但设计可变宽频带有源滤波器则比较困难。利用单片机控制参数可编程的双二阶通用开关电容有源滤波器,精确设置有源滤波器的中心频率f,品质因数Q及有源滤波器的工作方式。本系统主要分为两个部分:即程控滤波器和程控放大器。程控放大器电压增益为40dB,通过单片机控制DA进行分压,可精确实现要求的10dB步进,误差小于0.5 ,通带为100Hz-500KHz,输入电压峰-峰值范围为10mV,在输入范围内无明显失真。由MAX264为核心的滤波器,可设置为高通、低通滤波器。通过单片机直接给出控制频率,使-3dB截止频率在1KHz-20KHz内可调,步进1KHz,误差小于1 。整个系统以52单片机为控制核心,电路简单,性能稳定,且具有较高精度,滤波参数调节通过单片机控制,较为方便。(Filters are widely used in digital signal processing, communications, automatic control area, but the design variable wideband active filter is more difficult. Control parameters using single-chip programmable universal switched-capacitor biquad active filter, active filter accurately set the center frequency f, quality factor Q and the active filter works. The system is mainly divided into two parts: the program-controlled filters and programmable amplifiers. Programmable amplifier voltage gain of 40dB, the DA through the partial pressure of single-chip control, can accurately achieve the required 10dB step, the error is less than 0.5 , passband to 100Hz-500KHz, input voltage peak- the range of 10mV, the input range no significant distortion. By the MAX264 as the core of filter can be set to high pass, low pass filter. Given directly by the microcontroller controls the frequency, the-3dB cutoff frequency at 1KHz-20KHz adjustable, step 1KHz, error is less than 1 . The entire system for)

文件列表:

程控有源滤波器设计.doc,1956586,2011-07-17

下载说明:请别用迅雷下载,失败请重下,重下不扣分!

发表评论


0 个回复

  • an_r01an0455ej0100_rl78_pwm
    瑞萨 pwm 控制(自带头文件)压缩包打包 (Renesas pwm control (from the lead file) compressed packed)
    2013-08-31 09:00:39下载
    积分:1
  • c100
    单片机实例学习,可以轻松学习单片机.请大家仔细专研。(SCM instance learning, you can easily learn microcontroller. To please carefully researched.)
    2013-05-18 12:25:20下载
    积分:1
  • examples
    新华龙公司c8051f源码,用于cp2200(Hualong company c8051f source for cp2200)
    2020-06-26 18:00:02下载
    积分:1
  • CAN
    飞思卡尔CAN扩展帧通信,Can盒发送数据,单片机接受并返回数据(The Carle CAN extended frame communication, Can box to send data, the microcontroller to accept and return data )
    2020-09-21 00:47:56下载
    积分:1
  • NOKIA5110
    nokia5110源码加仿真测试,初始化液晶,按键测试静态动态显示(nokia5110 source plus simulation test, initialize the LCD, keypad test static dynamic display)
    2013-06-07 00:10:37下载
    积分:1
  • dianshi
    此资料给出了一套电子设计工程师的试题,很具指导性、学习性和操作性,大家不妨下载来看看吧。(This information is given a set of electronic design engineers, test questions, it is instructive to learn, and operational, you may wish to download and see it.)
    2010-10-21 13:13:12下载
    积分:1
  • BCReader
    IC卡读写器软件DEMO,支持ISO14443A、ISO14443B、ISO15693协议, ISO14443A:NTAG203、NTAG210、NTAG212、NTAG213、NTAG215、NTAG216, Ultralight、Ultralight C,MIFARE Classic 1K/4K, Mifare DESFire, MIFARE ProX, FM11RF08、FM11RF32, FM1208、FM1216 ,符合ISO14443A标准的CPU卡. ISO14443B:AT88RF020, SR176、SRI512、SRT512、SRI2K、SRI4K, SGIDC(只读UID),符合ISO14443B标准的CPU卡. ISO15693: I.CODE SLI, Tag-it HI-I Plus, 符合ISO15693标准的卡.(IC Card Reader Writer DEMO,support ISO14443A、ISO14443B、ISO15693 , ISO14443A:NTAG203、NTAG210、NTAG212、NTAG213、NTAG215、NTAG216, Ultralight、Ultralight C,MIFARE Classic 1K/4K, Mifare DESFire, MIFARE ProX, FM11RF08、FM11RF32, FM1208、FM1216 . ISO14443B:AT88RF020, SR176、SRI512、SRT512、SRI2K、SRI4K, SGIDC. ISO15693: I.CODE SLI, Tag-it HI-I Plus.)
    2020-06-26 20:00:02下载
    积分:1
  • dssz.com_9200_dtmf
    单片机音频通信9170和9200,接收发送源程序(9170 and 9200 microcontroller audio communication, the receiver sends source)
    2013-07-13 09:33:35下载
    积分:1
  • DisplayerForIndustryPC
    上位机图形显示程序,可用于8051单片机的开发,通信及控制(PC graphics procedures can be used for the 8051 microcontroller development, communication and control)
    2020-12-07 14:49:21下载
    积分:1
  • f32_mulAdd
    32位单精度浮点数的乘加运算的C编程,感兴趣的可以看一下(Single-precision floating-point multiply-add operation of the C programming, interested can look at)
    2015-10-10 09:18:26下载
    积分:1
  • 696518资源总数
  • 104530会员总数
  • 46今日下载