| 基于PC声卡的超低频函数信号发生器的设计 |
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| 引用本文： | 尹继武,王少华.基于PC声卡的超低频函数信号发生器的设计[J].电测与仪表,2006,43(4):58-60,64. |
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| 作者姓名： | 尹继武 王少华 |
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| 作者单位： | 陕西理工学院,物理系,陕西,汉中,723001 |
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| 摘 要： | 利用Mathematica软件，通过计算机声卡外接简洁合理的电路，将计算机强大的运算功能与直接数字式频率合成（DDS）技术的基本思想相结合，设计了一种超低频函数信号发生器。信号的频率、幅值和相位都可以通过键盘实现数控无级步进，频率稳定度与晶振在同一数量级，能写出数学表达式或给出数列值的信号都可以产生，是真正的函数信号发生器，无需切换波段，最大频率范围0．005Hz～10kHz，最大输出信号20Vpp，并能实现功率输出。
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| 关 键 词： | Mathematica软件 超低频 函数信号发生器 声卡 |
| 文章编号： | 1001-1390（2006）04-0058-03 |
| 收稿时间： | 2005-12-09 |
| 修稿时间： | 2005-12-09 |
Design of the Ultra-low Frequency Signal Generator Based on PC Sound Card |
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| YIN Ji-wu,WANG Shao-hua.Design of the Ultra-low Frequency Signal Generator Based on PC Sound Card[J].Electrical Measurement & Instrumentation,2006,43(4):58-60,64. |
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| Authors: | YIN Ji-wu WANG Shao-hua |
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| Affiliation: | Department of Physics, Shanxi University of Technology, Hanzhong 723001, Shanxi, China |
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| Abstract: | An ultra-low frequency signal generator is designed by using Mathematica software, PC sound card and a simple circuit, with the operation function of PC and DDS technology. The frequency, amplitude and phase of the signal are controlled by PC keyboard. Its frequency stability is the same with the one of the crystal oscillator. It can produce the various function signals. Its max frequency range is form 0.005Hz to 10 kHz, do not need switch the band, and maximum output is 20Vpp. It can also supply the output of power. |
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| Keywords: | Mathematica software ultra-low frequency function signal generator sound card |
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