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电源技术 基于开关电容技术的锁定放大器设计
锁定放大是微弱信号检测的重要手段。基于相关检测理论，利用开关电容的开关实现锁定放大器中乘法器的功能，提出开关电容和积分器相结合以实现相关检测的方法，并设计出一种锁定放大器。该锁定放大器将微弱信号转化为与之相关的方波，通过后续电路得到正比于被测信号的直流电平，为后续采集处理提供方便。测量数据表明锁定放 ...
单片机编程 基于C8051F020单片机的多路压力测量仪
介绍了一种基于C8051F020单片机的多路压力测量仪。该测量仪选用电阻应变式压力传感器采集压力信号，并经放大电路处理后送入C8051F020单片机，再由C8051F020单片机内部的A/D转换器将采集到的压力信号进行模数转化，然后分别对数据进行存储和显示。该测量仪能测量6路压力信号，并且各测量点都能单独检测和设置。由于采用了C80 ...
通信网络 基于码本映射的语音带宽扩展算法研究
在现代通信系统中，电话语音的频带被限制在300 Hz～4 kHz的范围内，带来了语音可懂度和自然度的降低。为了在不增加额外成本的前提下提高语音的可懂度和自然度，进行了电话语音频带扩展的研究。提出了一种改进的基于码本映射的语音带宽扩展算法：在码本映射的过程中，使用加权系数来得到映射码本。客观测试结果表明，用此算 ...
技术书籍 数字集成电路分析与设计_英文版
This book contains information obtained from authentic and highly regarded sources. Reprinted material is quoted with permission, and sources are indicated. A wide variety of references are listed. Reasonable efforts have been made to publish reliable data and information, but the author and the p ...
可编程逻辑 开关电源EMI设计(英文版)
Integrated EMI/Thermal Design forSwitching Power SuppliesWei ZhangThesis submitted to the Faculty of theVirginia Polytechnic Institute and State Universityin partial fulfillment of the requirements for the degree of
Integrated EMI/Thermal Design forSwitching Power SuppliesWei Zhang(ABSTRACT)This wor ...
书籍源码 The programs and applications on this disk have been carefully tested, but are not guaranteed for
The programs and applications on this disk have been carefully tested, but are
not guaranteed for any particular purpose. The publisher does not offer any
warranties and does not guarantee the accuracy, adequacy, or completeness of any
information and is not responsible for any errors or omission ...
DSP编程 t transistor has the characteristics of components of the sensor real-time measurement of voltage an
t transistor has the characteristics of components of the sensor real-time measurement of voltage and current signals through, obtained quality factor correction circuit for the feedback and the feedback time, IBM used the feedback field effect transistor implementation, in order to achieve quality ...
驱动编程 The programs and applications on this disk have been carefully tested, but are not guaranteed for
The programs and applications on this disk have been carefully tested, but are
not guaranteed for any particular purpose. The publisher does not offer any
warranties and does not guarantee the accuracy, adequacy, or completeness of
any information and is not responsible for any errors or omission ...
VC书籍 The programs and applications on this disk have been carefully tested, but are not guaranteed for
The programs and applications on this disk have been carefully tested, but are
not guaranteed for any particular purpose. The publisher does not offer any
warranties and does not guarantee the accuracy, adequacy, or completeness of
any information and is not responsible for any errors or omission ...
电子书籍 The programs and applications on this disk have been carefully tested, but are not guaranteed for
The programs and applications on this disk have been carefully tested, but are
not guaranteed for any particular purpose. The publisher does not offer any
warranties and does not guarantee the accuracy, adequacy, or completeness of
any information and is not responsible for any errors or omission ...