公开(公告)号：US20090195308A1

公开(公告)日：2009-08-06

申请号：US12185106

申请日：2008-08-03

Applicant: JUI-CHIN LIN

Inventor： JUI-CHIN LIN

IPC: H03G3/20

CPC classification number: H03G1/0088 ,  H03G3/3026

Abstract: An automatic gain control circuit includes a first voltage dividing resistor, a filter circuit, a switch circuit, and an amplifying circuit. The first voltage dividing resistor divides a voltage of the automatic gain control circuit using an internal impedance of the audio device to produce a divided DC voltage, wherein the first voltage dividing resistor is connected between a first power source and an output of the audio device. The filter circuit filters audio signals outputted from the audio device to produce filtered audio signals, and wherein the filter circuit receives the divided DC voltage, wherein the filter circuit is connected to the output of the audio device. The switch circuit outputs controlling signals according to the divided DC voltage from the filter circuit. The amplifying circuit amplifies the filtered audio signals according to the controlling signals. An electronic device using the automatic gain control circuit is also provided.

Abstract translation: 自动增益控制电路包括第一分压电阻器，滤波器电路，开关电路和放大电路。 第一分压电阻器使用音频装置的内部阻抗对自动增益控制电路的电压进行分压，以产生分压的直流电压，其中第一分压电阻连接在第一电源和音频装置的输出之间。 滤波器电路对从音频装置输出的音频信号进行滤波以产生经滤波的音频信号，并且其中滤波电路接收划分的直流电压，其中滤波电路连接到音频装置的输出端。 开关电路根据来自滤波电路的分压直流电压输出控制信号。 放大电路根据控制信号放大滤波后的音频信号。 还提供了使用自动增益控制电路的电子设备。

公开(公告)号：US20080107285A1

公开(公告)日：2008-05-08

申请号：US11616898

申请日：2006-12-28

Applicant: SHIH-KAI CHOU ,  JUI-CHIN LIN

Inventor： SHIH-KAI CHOU ,  JUI-CHIN LIN

IPC: H04B15/00 ,  H02H9/00

CPC classification number: H02H9/002 ,  Y10S323/908

Abstract: An inrush current restraining circuit (100) includes a power source (Vcc), a charging/discharging circuit (11), a switching circuit (13), a first impedance component (Z1), a second impedance component (Z2), and a controller (10). The charging/discharging circuit is connected to the power source. An input of the switching circuit is connected to the charging/discharging circuit, and an output of the switching circuit is defined as an output of the inrush current restraining circuit. One end of the first impedance component is connected to the power source. The second impedance component is connected between the other end of the first impedance and the switching circuit. The controller is connected a joint of the first impedance component and the second impedance component, for providing a control signal.

Abstract translation: 浪涌电流抑制电路（100）包括电源（Vcc），充电/放电电路（11），开关电路（13），第一阻抗分量（Z 1），第二阻抗分量（Z 2） 和控制器（10）。 充电/放电电路连接到电源。 开关电路的输入连接到充电/放电电路，开关电路的输出被定义为浪涌电流抑制电路的输出。 第一阻抗部件的一端连接到电源。 第二阻抗分量连接在第一阻抗的另一端与开关电路之间。 控制器连接第一阻抗分量和第二阻抗分量的联合，用于提供控制信号。