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公开(公告)号：US20210143777A1
公开(公告)日：2021-05-13
申请号：US16676518
申请日：2019-11-07
Applicant: Chung-Fu Chou
Inventor： Chung-Fu Chou
Abstract: The present invention generally relates to a structure and method of audio amplifier with power feedback, including a power amplifying unit, a loud-speaker, a current sensing unit, a voltage sensing unit and a multiplying unit, the power amplifying unit includes an input side and an output side, the input side inputs an audio voltage signal; and the loud-speaker is electrically connected to an output side of the power amplifying unit; the current sensing unit is electrically connected to the output side of the power amplifying unit and senses the output current of the power amplifying unit and then converted into a current control voltage signal; the voltage sensing unit is electrically connected to the output side of the power amplifying unit, and senses the output voltage of the power amplifying unit to form an output sensing voltage signal; the multiplying unit obtains the voltage of the current control voltage multiplied by the output sensing voltage, and the output side of the multiplying unit is electrically connected to the input side of the power amplifying unit to form a closed loop power feedback structure, accordingly improving the output quality of the amplifier and loud-speaker.
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公开(公告)号：US20210013729A1
公开(公告)日：2021-01-14
申请号：US16505828
申请日：2019-07-09
Applicant: Chung-Fu Chou
Inventor： Chung-Fu Chou
Abstract: The present invention relates generally to a battery charge/discharge management method and system. A lithium battery core and a DC/DC converter are embedded in the battery to generate input or output I/O voltage and current. When the lithium battery core is in the working voltage range, the battery charge/discharge management method comprises the following modes: a1. the overvoltage protection mode is adopted when the charging operation is higher than the preset high charging voltage, the I/O voltage cannot be fed in the battery; a2. it is charging mode when the charging operation voltage is lower than the preset high charging voltage and higher than the minimum rechargeable voltage, the I/O voltage can charge the lithium battery core in the battery; a3. it is protection mode when the I/O voltage is lower than the minimum rechargeable voltage and higher than the maximum dischargeable voltage, no charging/discharging operation; a4. the battery can discharge when the I/O voltage is lower than the maximum dischargeable voltage and higher than the minimum dischargeable voltage, the I/O voltage comprises the output internal reference voltage of DC/DC converter and the electric quantity indication voltage of product scaled down according to the actual voltage of lithium battery core, and the I/O voltage corresponds to dynamic load line characteristic; a5. the I/O voltage load line offset is enlarged when the actual voltage of lithium battery core is lower than the preset low battery voltage; a6. it is negative voltage protection mode when the I/O voltage is lower than 0V, the battery does not perform charging/discharging operation, and I/O terminal to ground short circuit provides a negative current loop; the present invention can provide better electric quantity management and measurement.
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公开(公告)号：US08014183B2
公开(公告)日：2011-09-06
申请号：US12036212
申请日：2008-02-22
Applicant: Chung Fu Chou
Inventor： Chung Fu Chou
Abstract: A power converter with a feedback controller includes a converter body with an input end for an input voltage, an output end for an output voltage, a controller with a feedback device, and a connector for connection with the output end of the converter body and with an electric appliance. The circuit of the converter body converts an input voltage to an output voltage. A controller is connected in circuit to the converter body and includes a circuit for regulating the voltage for a desired system output. The feedback device connects to the output end of the converter body. The output voltage is adjustable only when the controller receives an output voltage as a feedback from the feedback device. The controller is not triggered and hence an output voltage is not adjustable when the connector is engaged with the output end of the converter body.
Abstract translation: 具有反馈控制器的电力转换器包括具有用于输入电压的输入端的转换器主体，用于输出电压的输出端，具有反馈装置的控制器和用于与转换器主体的输出端连接的连接器 电器。 转换器主体的电路将输入电压转换为输出电压。 控制器电路连接到转换器主体，并且包括用于调节所需系统输出的电压的电路。 反馈装置连接到转换器主体的输出端。 输出电压仅在控制器从反馈装置接收到输出电压作为反馈时才可调。 控制器不被触发，因此当连接器与转换器主体的输出端接合时，输出电压不可调。
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公开(公告)号：US07835163B2
公开(公告)日：2010-11-16
申请号：US12043317
申请日：2008-03-06
Applicant: Chung Fu Chou
Inventor： Chung Fu Chou
IPC: H02M3/335
CPC classification number: H02M3/33515
Abstract: This invention discloses a power converter with a secondary-side control, including an input circuit with one or more switches, an output circuit with an output end and a controller, and a transformer with a primary-side coil assembly connecting the switch(es) and a secondary-side coil assembly connecting the output circuit. The on/off state of the switch(es) is controlled by variations in voltage of primary-side coil assembly. The controller in the output circuit detects an output voltage and sends detected results to the primary-side coil assembly as a feedback for primary-side coil assembly to regulate the PWM or PFM action of the switch in a specific way to maintain voltage stability.
Abstract translation: 本发明公开了一种具有次级侧控制的功率转换器，包括具有一个或多个开关的输入电路，具有输出端的输出电路和控制器，以及具有连接开关的初级侧线圈组件的变压器， 以及连接输出电路的次级侧线圈组件。 开关的开/关状态由初级侧线圈组件的电压变化控制。 输出电路中的控制器检测输出电压，并将检测结果发送到初级侧线圈组件作为初级侧线圈组件的反馈，以特定方式调节开关的PWM或PFM动作以保持电压稳定性。
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公开(公告)号：US20200220507A1
公开(公告)日：2020-07-09
申请号：US16683344
申请日：2019-11-14
Applicant: Chung-Fu Chou
Inventor： Chung-Fu Chou
Abstract: The present invention generally relates to a structure and method of audio amplifier by dynamic impedance adjustment, including a power amplifying unit, a loud-speaker, a current sensing unit and a subtraction unit, the power amplifying unit has a fixed closed loop gain, with an input side and an output side; the loud-speaker is electrically connected to the output side of the power amplifying unit; the current sensing unit senses the output current of the power amplifying unit, and the sensed output current is converted into a current control voltage signal; the subtraction unit inputs the audio voltage signal and the feedback current control voltage signal, and outputs the difference of the audio voltage signal minus the current control voltage signal, and inputs it to the input side of the power amplifying unit; thereby, the present invention can improve the output sound quality of the loud-speaker by dynamic impedance adjustment.
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Patent Agency Ranking
公开(公告)号：US11329610B2
公开(公告)日：2022-05-10
申请号：US16676518
申请日：2019-11-07
Applicant: Chung-Fu Chou
Inventor： Chung-Fu Chou
Abstract: The present invention generally relates to a structure and method of audio amplifier with power feedback, including a power amplifying unit, a loud-speaker, a current sensing unit, a voltage sensing unit and a multiplying unit. The power amplifying unit includes an input side and an output side, the input side inputs an audio voltage signal, and the loudspeaker is electrically connected to an output side of the power amplifying unit. The current sensing unit is electrically connected to the output side of the power amplifying unit and senses the output current of the power amplifying unit and then converts it into a current control voltage signal. The voltage sensing unit is electrically connected to the output side of the power amplifying unit, and senses the output voltage of the power amplifying unit to form an output sensing voltage signal. The multiplying unit obtains the voltage of the current control voltage multiplied by the output sensing voltage, and the output side of the multiplying unit is electrically connected to the input side of the power amplifying unit to form a closed loop power feedback structure. Accordingly, the output quality of the amplifier and loud-speaker is improved.
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公开(公告)号：US11264957B2
公开(公告)日：2022-03-01
申请号：US16683344
申请日：2019-11-14
Applicant: Chung-Fu Chou
Inventor： Chung-Fu Chou
Abstract: The present invention generally relates to a structure and method of audio amplifier by dynamic impedance adjustment, including a power amplifying unit, a loud-speaker, a current sensing unit and a subtraction unit. The power amplifying unit has a fixed closed loop gain, with an input side and an output side; the loud-speaker is electrically connected to the output side of the power amplifying unit; the current sensing unit senses the output current of the power amplifying unit, and the sensed output current is converted into a current control voltage signal; the subtraction unit inputs the audio voltage signal and the feedback current control voltage signal, and outputs the difference of the audio voltage signal minus the current control voltage signal, and inputs it to the input side of the power amplifying unit. The output sound quality of the loud-speaker is improved by dynamic impedance adjustment.
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公开(公告)号：US20210351705A1
公开(公告)日：2021-11-11
申请号：US16867641
申请日：2020-05-06
Applicant: Chung-Fu Chou
Inventor： Chung-Fu Chou
Abstract: The present invention discloses a flyback power switch structure for bridgeless rectifier, comprising a main transformer, a primary side circuit, a secondary side circuit, and a feedback control circuit. Said main transformer comprises primary coil and secondary coil. Said primary side circuit is connected to the input AC power supply and the primary coil of main transformer, and is provided with a first switch component, a second switch component, a third switch component, and a fourth switch component. Said secondary side circuit is connected to the secondary coil of said main transformer, generating output voltage. Said feedback control circuit is connected to the secondary side circuit and the first, second, third and fourth switch components of primary side circuit, comparing phase signals according to the feedback signals and the first and second terminal voltages of input AC power supply to control the actuation of the first, second, third and fourth switch components. Thereby, the present invention can increase the efficiency and can be easily miniaturized.
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公开(公告)号：US20080304295A1
公开(公告)日：2008-12-11
申请号：US12043317
申请日：2008-03-06
Applicant: Chung Fu CHOU
Inventor： Chung Fu CHOU
IPC: H02M3/335
CPC classification number: H02M3/33515
Abstract: This invention discloses a power converter with a secondary-side control, including an input circuit with one or more switches, an output circuit with an output end and a controller, and a transformer with a primary-side coil assembly connecting the switch(es) and a secondary-side coil assembly connecting the output circuit. The on/off state of the switch(es) is controlled by variations in voltage of primary-side coil assembly. The controller in the output circuit detects an output voltage and sends detected results to the primary-side coil assembly as a feedback for primary-side coil assembly to regulate the PWM or PFM action of the switch in a specific way to maintain voltage stability.
Abstract translation: 本发明公开了一种具有次级侧控制的功率转换器，包括具有一个或多个开关的输入电路，具有输出端的输出电路和控制器，以及具有连接开关的初级侧线圈组件的变压器， 以及连接输出电路的次级侧线圈组件。 开关的开/关状态由初级侧线圈组件的电压变化控制。 输出电路中的控制器检测输出电压，并将检测结果发送到初级侧线圈组件作为初级侧线圈组件的反馈，以特定方式调节开关的PWM或PFM动作以保持电压稳定性。
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公开(公告)号：US11228250B2
公开(公告)日：2022-01-18
申请号：US16867641
申请日：2020-05-06
Applicant: Chung-Fu Chou
Inventor： Chung-Fu Chou
Abstract: A flyback power switch structure for bridgeless rectifier includes a main transformer, a primary side circuit, a secondary side circuit, and a feedback control circuit. The main transformer includes a primary coil and a secondary coil. The primary side circuit is connected to the input AC power supply and the primary coil of main transformer, and is provided with a first switch component, a second switch component, a third switch component, and a fourth switch component. The secondary side circuit is connected to the secondary coil of said main transformer, generating an output voltage. The feedback control circuit is connected to the secondary side circuit and the first, second, third and fourth switch components of primary side circuit, comparing phase signals according to the feedback signals and the first and second terminal voltages of an input AC power supply to control the actuation of the first, second, third and fourth switch components.
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