Description: 可程控开关电容滤波器设计的三部分代码。用到的芯片有AT89C2051、MAX261等。-programmable switched-capacitor filter design of the three-part code. The chip is used AT89C2051, MAX261, and so on. Platform: |
Size: 2950 |
Author:杨武马 |
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Description: 流电路后面的滤波电路中需要一个较大容量的电解电容进行滤波，一般采用2200uF/25V的就可以-flow behind the circuit filter circuit needs a larger capacity electrolytic capacitor filter generally use the 2200 can uF/25V Platform: |
Size: 62929 |
Author:zhangwenlan |
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Description: 1、基于FPGA实现FIR数字滤波器的研究（使用VHDL语言进行编程）
2、多功能单片机下载开发软硬件的设计（利用VB或V C++和C语言）有下载板和下载软件
3、迷你播放器（利用Visual Basic 6.0设计）可以播放多种格式的音乐和电影，以及图片浏览等等
4、小电容小电感测试仪
-1, FPGA-based digital FIR filter (use VHDL program) 2. Multi-function download the software and hardware design development (VB or V C and C language), downloading software and download Plate 3, Player (using Visual Basic 6.0 design) can play multiple formats of music and movies, Photo View and so on four small small inductance capacitor tester Platform: |
Size: 16384 |
Author:wangxing |
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Description: 可程控开关电容滤波器设计的三部分代码。用到的芯片有AT89C2051、MAX261等。-programmable switched-capacitor filter design of the three-part code. The chip is used AT89C2051, MAX261, and so on. Platform: |
Size: 3072 |
Author:杨武马 |
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Description: 流电路后面的滤波电路中需要一个较大容量的电解电容进行滤波，一般采用2200uF/25V的就可以-flow behind the circuit filter circuit needs a larger capacity electrolytic capacitor filter generally use the 2200 can uF/25V Platform: |
Size: 62464 |
Author:zhangwenlan |
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Description: 提出一种基于电压电流双环控制的三相SVPWM 逆变器,分析了其两相同步旋转坐标系下的数学模型
并由此构建了系统的电压电流控制器。为了提高系统的动态响应特性及抗扰能力,电压外环包含了负载电流前馈
及输出滤波电容电流解耦,电流内环包含了输出电压前馈及输出滤波电感电压解耦。20 kVA实验样机的实验结果
表明,该逆变器具有良好的非线性负载能力。-A dual-loop control of voltage and current-based three-phase SVPWM inverter, an analysis of its two-phase synchronous rotating coordinate system and thus build a mathematical model of the system voltage and current controller. In order to improve the system dynamic response and anti-interference ability, voltage ring contains load current feedforward and output filter capacitor current decoupling, current loop includes the output voltage feedforward and output filter inductor voltage decoupling. 20 kVA experimental prototype of the experimental results show that the inverter has a good non-linear load capacity. Platform: |
Size: 204800 |
Author:zh |
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Description: 程控滤波器论文。实现了步进为10dB的0到60dB的可调增益。滤波器部分以可编程开关电容滤波器MAX262芯片为核心，实现了截止频率1KHZ-20KHZ步进1HZ可调的程控滤波器，各项误差低于5％。-Program-controlled filter papers. To realize a step from 0 to 60dB in 10dB of adjustable gain. Filter part of programmable switched capacitor filter MAX262 chip as the core, realize the cut-off frequency 1Hz step 1KHZ-20KHZ program adjustable filter, the error of less than 5. Platform: |
Size: 108544 |
Author:仙儿 |
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Description: 2008年第七期EMC技术期刊--无线数据采集器用滤波电容解通信端口的EFT问题-2008 Seventh EMC technical journals- Wireless data acquisition filter capacitor used in the EFT solution communication port problem Platform: |
Size: 563200 |
Author:chenblue |
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Description: MAX260/261/262是MAXIM公司推出的可编程开关电容通用滤波器，通过单片机（89C51）对该芯片的6个输入端进行有效设置可实现64个不同的中心频率f0，而且Q值可达128。文中介绍了这些通用滤波器的功能、特性以及典型应用电路。 -MAXIM Unveils MAX260/261/262 is programmable general-purpose switched-capacitor filter, through the single-chip microcomputer (89C51) chips of the six inputs can be effectively set up 64 different center frequency f0, and the Q value up to 128. In this paper, the generic filter functions, characteristics and typical application circuit. : Platform: |
Size: 1321984 |
Author:zhanxiaohong |
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Description: ：简介了研制的随机振动信号处理虚拟仪器系统的组成。叙述了其中的抗混滤波器的作用与要
求，并在分析8 阶低通椭圆开关电容滤波器（MAX293 ）性能的基础上，研制了基于MAX293 的抗混滤
波器。尤其对遇到的“共振”现象作出了理论分析及实验验证，同时给出了解决方法。该抗混滤波器具
有电路简单、变带宽方便、过渡带衰减迅速等优点-The composition of the developed virtual instrument system of processing a random
vibration signal is introduced. The action and demand of the anti alias filter in the system are
recounted. After analyzing the 8-order low pass elliptic switched capacitor filter (MAX293), the anti
alias filter is developed based on it. Specifically, the“ resonance”phenomenon is analyzed theoretically
and the analysis is proved by the experiment. The“ resonance”is avoided. The anti
alias filter has the performance of the circuit being simple, the change of the pass band convenient,
and the attenuation of the transition band sharp Platform: |
Size: 48128 |
Author:张雨 |
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Description: 引脚可编程的开关电容滤波器MAX264内部集成了滤波器所需的电阻、电容．无需外接器件，且其中心频率、Q值及工作模式都可通过引脚编程设置进行控制。MAX264可工作于带通、低通、高通、带陷或是全通模式下，其通带截止频率可达140 kHz。
-Abstract：The design of the digital programmable filter which mainly consists of variable——gain amplifier
AD603 and a universal switched—capacitor active filter MAX264 is introduced in the paper Platform: |
Size: 159744 |
Author:丑小鸭 |
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Description: 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 Platform: |
Size: 1635328 |
Author:黄倩 |
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Description: 本系统用引脚可编程开关电容滤波器MAX264来实现程控滤波器，利用DDS产生精确外部时钟来实现fc在1KHz到40KHz步进可调。-The system uses pin-programmable switched-capacitor filter to achieve the programmed filter MAX264, use DDS to generate accurate external clock to achieve fc at 1KHz to 40KHz step adjustable. Platform: |
Size: 75776 |
Author:李寒 |
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Description: 本论文设计了由AT89C52单片机为控制核心,用红外线为监测装置的防盗报警系统。该系统中红外对管作为红外线的发射和接收部分。发射部分采用红外发光二极管，而使用光敏三极管作为接收部分，接收红外发光二极管发出的红外线（不可见光）。单片机将通过内部的软件系统检测到接收管的导通或截止状态,并根据检测到的信号状态,进行判断并输出报警信号, 直至按复位按钮或电源开关。声光报警信号由9014三极管驱动构成声光报警电路,进行声光同时报警。电源部分采用变压器将220V交流市经变压器降压，桥式整流器整流，电解电容滤波，三端稳压管78L05稳压，最后得到整机要求的+5V稳定直流电源。实验表明，本系统成功运行。-This thesis is designed by AT89C52 microcontroller as the control center for monitoring device with infrared burglar alarm system. The system of infrared tube as infrared transmitting and receiving section. Emitting portion using infrared light emitting diode, a phototransistor as a receiving portion to receive the infrared ray emitted from the infrared light emitting diodes (not visible). The microcontroller will be detected by the internal software system to the turned on or off state of the receiver tube, and according to the detected signal state, to determine and output an alarm signal until a reset button or the power switch. Audible and visual alarm signal by 9014 transistor drive constitute sound and light alarm circuit, sound and light alarm at the same time. The power part of the transformer 220V AC City by the step-down transformer, bridge rectifier rectifier, electrolytic capacitor filter, three-terminal regulator 78L05 regulator, and finally get the machine requirements+5V Platform: |
Size: 1024 |
Author:陈媛 |
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