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    • 1. 发明授权
    • Amplifier for microphone
    • 麦克风放大器
    • KR101109392B1
    • 2012-01-30
    • KR20100070085
    • 2010-07-20
    • KEC KK
    • KANG KI TAE
    • H03F3/185H04R3/00
    • H03F3/183H03F1/223H03F1/56H03G1/0029H04R3/00
    • PURPOSE: A microphone amplifier is provided to turn on the electricity between electrodes by sanctioning the voltage of an input power source in a gate terminal and turning on a JFET and to reduce manufacturing costs. CONSTITUTION: A first condenser and first resistance are serially connected between an input power source and earth. A first JFET(Junction Field Effect Transistor)(J1) interlinks gate terminal to a connecting point of the first resistance and a first condenser. A first BJT(Bipolar Junction Transistor)(Q1) is cascode-connected to the first JFET. A second BJT(Q2) interlinks a base terminal to a first BJT terminal. A second JFET is cascode-connected to the second BJT.
    • 目的:提供麦克风放大器,通过对栅极端子中的输入电源的电压进行加工并打开JFET并降低制造成本来打开电极之间的电能。 构成:第一个电容器和第一个电阻串联在输入电源和地之间。 第一JFET(接合场效应晶体管)(J1)将栅极端子与第一电阻的连接点和第一电容器相互连接。 第一个BJT(双极结晶体管)(Q1)与第一个JFET共源共栅。 第二BJT(Q2)将基站与第一BJT终端相互连接。 第二个JFET被共源共栅连接到第二个BJT。
    • 4. 发明授权
    • Mosfet circuit structure and a cmos amplifier employing the circuit structure mosfet
    • KR100875729B1
    • 2008-12-26
    • KR20070004757
    • 2007-01-16
    • H03F3/45H03F3/185
    • A MOSFET circuit architecture is provided to improve a glitch characteristic or a low frequency flicker noise characteristic by using a new MOSFET circuit architecture. A MOSFET circuit architecture includes a first signal input unit, a second signal input unit, a first MOSFET(T1), a second MOSFET(T2), a first switching unit(SW11), a second switching unit(SW12), a third switching unit(SW21), and a fourth switching unit(SW22). The first signal input unit receives a first clock signal which is switched at a predetermined period in a VDD-VSS range. The second signal input unit receives a second clock signal having an opposite phase to the first clock signal which is switched at the predetermined period in the VDD-VSS range. The first MOSFET is coupled to the first signal input unit. The second MOSFET is coupled to the second signal input unit. If the first clock signal has a VDD value, the first switching unit connects a source-drain of the first MOSFET. The second switching unit controls the first clock signal to be applied to a drain of the second MOSFET. If the second clock signal has the VDD value, the third switching unit connects a source-drain of the second MOSFET. The fourth switching unit controls the second clock signal to be applied to a drain of the first MOSFET.
    • 5. 发明公开
    • MOSFET CIRCUIT ARCHITECTURE AND CMOS AMPLIFIER OF HAVING THE MOSFET CIRCUIT ARCHITECTURE
    • 具有MOSFET电路架构的MOSFET电路架构和CMOS放大器
    • KR20080067450A
    • 2008-07-21
    • KR20070004757
    • 2007-01-16
    • SAMSUNG ELECTRONICS CO LTD
    • KOH JEONG WOOKSUH CHUN DEOK
    • H03F3/45H03F3/185
    • H03F3/45183H03F3/45188H03K19/00361H03K19/018521
    • A MOSFET circuit architecture is provided to improve a glitch characteristic or a low frequency flicker noise characteristic by using a new MOSFET circuit architecture. A MOSFET circuit architecture includes a first signal input unit, a second signal input unit, a first MOSFET(T1), a second MOSFET(T2), a first switching unit(SW11), a second switching unit(SW12), a third switching unit(SW21), and a fourth switching unit(SW22). The first signal input unit receives a first clock signal which is switched at a predetermined period in a VDD-VSS range. The second signal input unit receives a second clock signal having an opposite phase to the first clock signal which is switched at the predetermined period in the VDD-VSS range. The first MOSFET is coupled to the first signal input unit. The second MOSFET is coupled to the second signal input unit. If the first clock signal has a VDD value, the first switching unit connects a source-drain of the first MOSFET. The second switching unit controls the first clock signal to be applied to a drain of the second MOSFET. If the second clock signal has the VDD value, the third switching unit connects a source-drain of the second MOSFET. The fourth switching unit controls the second clock signal to be applied to a drain of the first MOSFET.
    • 提供MOSFET电路架构,通过使用新的MOSFET电路架构来提高毛刺特性或低频闪烁噪声特性。 MOSFET电路结构包括第一信号输入单元,第二信号输入单元,第一MOSFET(T1),第二MOSFET(T2),第一开关单元(SW11),第二开关单元(SW12),第三开关 单元(SW21)和第四切换单元(SW22)。 第一信号输入单元接收在VDD-VSS范围内以预定周期切换的第一时钟信号。 第二信号输入单元接收与在VDD-VSS范围中的预定周期切换的第一时钟信号具有相反相位的第二时钟信号。 第一MOSFET耦合到第一信号输入单元。 第二MOSFET耦合到第二信号输入单元。 如果第一时钟信号具有VDD值,则第一开关单元连接第一MOSFET的源极 - 漏极。 第二开关单元控制要施加到第二MOSFET的漏极的第一时钟信号。 如果第二时钟信号具有VDD值,则第三开关单元连接第二MOSFET的源极 - 漏极。 第四开关单元控制施加到第一MOSFET的漏极的第二时钟信号。
    • 9. 发明授权
    • 저소비전력 및 고효율 출력형 오디오 앰프
    • 具有低功耗和高效率输出的音频放大器
    • KR101086064B1
    • 2011-11-22
    • KR1020110061587
    • 2011-06-24
    • 주식회사 동성씨앤티
    • 서동목강성모
    • H03F3/217H03F3/185
    • H03F3/2171H03F1/0266H03F3/185H03F2200/03H03F2200/444
    • PURPOSE: A low dissipation and high efficiency output type audio amplifier is provided to improve the output efficiency of an amplifier itself by steadily activating power amplifier devices. CONSTITUTION: A voltage amplifier(1) amplifies voltage about a minute acoustic signal which is inputted. A output terminal power amplifier(2) amplifies an acoustic signal which is outputted through the voltage amplifier. The amplified acoustic signal is outputted to a speaker(SP). A power voltage supplier(3) supplies voltage for driving each part of an amplifier. A zener diode(ZD1) for power amplifier output voltage detect is connected among resistance for protection(R1), an output port of the power amplifier, and a high voltage output port of the power voltage supplier. A transistor(TR1) for by-pass voltage variableness varies the base bias voltage of a load amount adjustment transistor.
    • 目的:提供低耗散和高效率的输出型音频放大器,通过稳定地激活功率放大器器件来提高放大器本身的输出效率。 构成:电压放大器(1)放大输入的大约一分钟声信号的电压。 输出端子功率放大器(2)放大通过电压放大器输出的声信号。 放大的声信号被输出到扬声器(SP)。 电源供应器(3)提供用于驱动放大器各部分的电压。 用于功率放大器输出电压检测的齐纳二极管(ZD1)连接在保护电阻(R1),功率放大器的输出端口和电源供应器的高压输出端口之间。 用于旁路电压变化的晶体管(TR1)改变负载量调节晶体管的基极偏置电压。
    • 10. 发明公开
    • 전력 배율기 장치 및 방법
    • 功率乘法器装置和方法
    • KR1020070084057A
    • 2007-08-24
    • KR1020077010423
    • 2005-11-28
    • 크리에이티브 테크놀로지 엘티디
    • 마키노,준팅,분기
    • H03F3/217H03F3/185
    • H03F3/217H03F1/0244H03F3/2173H03F2200/351
    • A power multiplier apparatus for an amplifier comprises a power multiplier control stage (10), an amplifier stage (13) and a first switching stage (11) connectable to the power multiplier control stage (10). The amplifier stage (13) is connectable to the power multiplier control stage (10). The power multiplier apparatus has a first output terminal (1) and a second output terminal (2), the amplifier stage (13) is connectable to the second output terminal (2) for driving a load (20) connectable between the first 1 and second (2) output terminals. The first switching stage (11) is connectable to the first output terminal (1) to apply a switchable DC voltage level to the first output terminal (1). There is also disclosed a method of amplifying the power output of an amplifier apparatus.
    • 用于放大器的功率倍增器装置包括功率乘法器控制级(10),放大级(13)和可连接到功率倍增器控制级(10)的第一开关级(11)。 放大器级(13)可连接到功率倍增器控制级(10)。 所述功率倍增器装置具有第一输出端子(1)和第二输出端子(2),所述放大器级(13)可连接到所述第二输出端子(2),用于驱动可连接在所述第一输出端子 第二(2)个输出端子。 第一开关级(11)可连接到第一输出端(1),以向第一输出端(1)施加可切换的直流电压电平。 还公开了放大装置的功率放大的放大方法。