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公开(公告)号：US10404221B2
公开(公告)日：2019-09-03
申请号：US15799770
申请日：2017-10-31
Applicant: THX Ltd.
Inventor： Owen Jones , Lawrence R. Fincham , Andrew Mason
Abstract: An amplifier circuit that includes a first amplifier that has a first input that receives an input signal, a second input and an output. The amplifier circuit also includes a second amplifier that has a first input that is coupled to the output of said the amplifier and a second input. The circuit further includes a first impedance network Z1, a second impedance network Z2, a third impedance network Z3 and a fourth impedance network Z4. The first impedance network Z1 is coupled to a load and the second input of the second amplifier, the second impedance Z2 is connected the output of the first amplifier and the second input of the first amplifier, the third impedance Z3 is connected to the output of the first amplifier and the load, the fourth impedance Z4 is connected the output of the second amplifier and the second input of said first amplifier.
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Patent Agency Ranking
公开(公告)号：US10298142B2
公开(公告)日：2019-05-21
申请号：US14873043
申请日：2015-10-01
Applicant: THX Ltd.
Inventor： Owen Jones , Andrew Mason , Lawrence R. Fincham
Abstract: A power supply that includes a first current generator circuit that is coupled to a first transformer and generates a first waveform and a second current generator circuit that is coupled to a second transformer, and generates a second waveform that is out of phase with the first waveform. The first and second waveforms are rectified and combined into a DC output signal. The power supply includes a first coupling circuit that couples the first current generator circuit to the first transformer and a second coupling circuit that couples the second current generator circuit to the second transformer.
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公开(公告)号：US20160099657A1
公开(公告)日：2016-04-07
申请号：US14873043
申请日：2015-10-01
Applicant: THX Ltd.
Inventor： Owen Jones , Andrew Mason , Lawrence R. Fincham
IPC: H02M7/06
Abstract: A power supply that includes a first current generator circuit that is coupled to a first transformer and generates a first waveform and a second current generator circuit that is coupled to a second transformer, and generates a second waveform that is out of phase with the first waveform. The first and second waveforms are rectified and combined into a DC output signal. The power supply includes a first coupling circuit that couples the first current generator circuit to the first transformer and a second coupling circuit that couples the second current generator circuit to the second transformer.
Abstract translation: 一种电源，包括耦合到第一变压器并产生第一波形的第一电流发生器电路和耦合到第二变压器的第二电流发生器电路，并且产生与第一波形异相的第二波形 。 第一和第二波形被整流并组合成直流输出信号。 电源包括将第一电流发生器电路耦合到第一变压器的第一耦合电路和将第二电流发生器电路耦合到第二变压器的第二耦合电路。
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公开(公告)号：US20180123531A1
公开(公告)日：2018-05-03
申请号：US15799770
申请日：2017-10-31
Applicant: THX Ltd.
Inventor： Owen Jones , Lawrence R. Fincham , Andrew Mason
CPC classification number: H03F1/34 , H03F3/183 , H03F3/187 , H03F3/45475 , H03F3/605 , H03F2200/03 , H03F2200/135 , H03F2203/45118 , H03F2203/45138 , H03F2203/45148
Abstract: An amplifier circuit that includes a first amplifier that has a first input that receives an input signal, a second input and an output. The amplifier circuit also includes a second amplifier that has a first input that is coupled to the output of said the amplifier and a second input. The circuit further includes a first impedance network Z1, a second impedance network Z2, a third impedance network Z3 and a fourth impedance network Z4. The first impedance network Z1 is coupled to a load and the second input of the second amplifier, the second impedance Z2 is connected the output of the first amplifier and the second input of the first amplifier, the third impedance Z3 is connected to the output of the first amplifier and the load, the fourth impedance Z4 is connected the output of the second amplifier and the second input of said first amplifier.
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公开(公告)号：US10938357B2
公开(公告)日：2021-03-02
申请号：US16584327
申请日：2019-09-26
Applicant: THX LTD.
Inventor： Owen Jones
Abstract: Embodiments provide an audio amplifier circuit with integrated (built-in) filter (e.g., a digital-to-analog converter (DAC) filter). The audio amplifier circuit may have a non-flat (e.g., low-pass) closed loop frequency response. The audio amplifier circuit may include a low pass filter coupled between an input terminal that receives the input analog audio signal and the input of the gain stage of the amplifier. In some embodiments, additional impedance networks may be included to produce a desired low-pass filter response, such as a second order filter, a third order filter, and/or another suitable filter response. Other embodiments may be described and/or claimed.
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公开(公告)号：US09484860B2
公开(公告)日：2016-11-01
申请号：US13797473
申请日：2013-03-12
Applicant: THX Ltd
Inventor： Owen Jones , Lawrence R. Fincham
CPC classification number: H03F1/0211 , H03F1/0238 , H03F3/185
Abstract: A tracking power supply for one or more amplifiers includes one or more cascaded sets of power boost circuits to temporarily boost the positive and/or negative power supply rail, respectively. Each power boost circuit may include a gain element and an energy source such as a capacitor or battery, and the power boost circuits are linked to provide a greater degree of voltage boost when needed. An optional control circuit monitors amplifier output signal levels, or separately amplified input signal levels, and provides power boost control signals to the power boost circuits, which temporarily raise or lower the positive and/or negative supply voltages above or below the nominal voltage rails in tandem with the highest and lowest output signals, respectively, from the amplifier(s).
Abstract translation: 用于一个或多个放大器的跟踪电源包括一个或多个级联的功率升压电路组，以分别临时提升正和/或负电源轨。 每个功率升压电路可以包括增益元件和诸如电容器或电池的能量源，并且功率升压电路被连接以在需要时提供更大程度的电压提升。 可选的控制电路监视放大器输出信号电平或单独放大的输入信号电平，并向功率升压电路提供功率升压控制信号，暂时升高或降低高于或低于标称电压轨的正和负电源电压 分别来自放大器的最高和最低输出信号。
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