公开(公告)号：US07053705B2

公开(公告)日：2006-05-30

申请号：US10744663

申请日：2003-12-23

申请人： John J. Hench ,  Joseph Comparetto

发明人： John J. Hench ,  Joseph Comparetto

IPC分类号： H03F1/36

CPC分类号： H03F1/08 ,  H03F1/34 ,  H03F3/187 ,  H03F2200/387

摘要： A method and system for providing a mixed-mode (current- and voltage-source) audio amplifier is disclosed. The mixed-mode amplifier includes a voltage sensing feedback path including a first network comprising at least one circuit; and a current sensing feedback path including a second network comprising at least one circuit. According to the method and system disclosed herein, the first and second networks vary an output impedance or transconductance of the amplifier as a function of frequency of the input voltage signal, such that at a first frequency range, the amplifier operates substantially as a current amplifier, and at a second frequency range, the amplifier operates substantially as a voltage amplifier, thereby inheriting distortion reduction of the current amplifier and stability of the voltage amplifier.

摘要翻译： 公开了一种用于提供混合模式（电流和电压源）音频放大器的方法和系统。 混合模式放大器包括电压感测反馈路径，其包括包括至少一个电路的第一网络; 以及包括包括至少一个电路的第二网络的电流感测反馈路径。 根据本文公开的方法和系统，第一和第二网络根据输入电压信号的频率改变放大器的输出阻抗或跨导，使得在第一频率范围，放大器基本上作为电流放大器 ，并且在第二频率范围内，放大器基本上作为电压放大器工作，从而继承了电流放大器的失真减小和电压放大器的稳定性。

公开(公告)号：US20050134374A1

公开(公告)日：2005-06-23

申请号：US10744663

申请日：2003-12-23

申请人： John Hench ,  Joseph Comparetto

发明人： John Hench ,  Joseph Comparetto

IPC分类号： H03F1/08 ,  H03F1/34 ,  H03F3/187 ,  H03F1/36

CPC分类号： H03F1/08 ,  H03F1/34 ,  H03F3/187 ,  H03F2200/387

摘要： A method and system for providing a mixed-mode (current- and voltage-source) audio amplifier is disclosed. The mixed-mode amplifier includes a voltage sensing feedback path including a first network comprising at least one circuit; and a current sensing feedback path including a second network comprising at least one circuit. According to the method and system disclosed herein, the first and second networks vary an output impedance or transconductance of the amplifier as a function of frequency of the input voltage signal, such that at a first frequency range, the amplifier operates substantially as a current amplifier, and at a second frequency range, the amplifier operates substantially as a voltage amplifier, thereby inheriting distortion reduction of the current amplifier and stability of the voltage amplifier.

摘要翻译： 公开了一种用于提供混合模式（电流和电压源）音频放大器的方法和系统。 混合模式放大器包括电压感测反馈路径，其包括包括至少一个电路的第一网络; 以及包括包括至少一个电路的第二网络的电流感测反馈路径。 根据本文公开的方法和系统，第一和第二网络根据输入电压信号的频率改变放大器的输出阻抗或跨导，使得在第一频率范围，放大器基本上作为电流放大器 ，并且在第二频率范围内，放大器基本上作为电压放大器工作，从而继承了电流放大器的失真减小和电压放大器的稳定性。

公开(公告)号：US20130305825A1

公开(公告)日：2013-11-21

申请号：US13895984

申请日：2013-05-16

申请人： Joseph Comparetto ,  Kenneth Wilson

发明人： Joseph Comparetto ,  Kenneth Wilson

IPC分类号： G01N29/44

CPC分类号： G01N29/4427 ,  F02D11/106 ,  F02D41/0077 ,  F02D2041/286 ,  F02D2041/288 ,  F02D2200/0404 ,  F16K37/0041

摘要： A method of detecting a valve position includes imparting a vibration-inducing energy to a valve, detecting vibration of the valve and producing a sensor signal corresponding to the vibration of the valve, processing the sensor signal determining a measured response of the valve, and comparing the measured response to one or more predetermined characteristic frequencies for selected valve positions to determine the position of the valve.

摘要翻译： 检测阀位置的方法包括向阀施加振动诱发能量，检测阀的振动并产生对应于阀的振动的传感器信号，处理传感器信号以确定阀的测量响应，以及比较 对所选阀位置的一个或多个预定特征频率的测量响应，以确定阀的位置。