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公开(公告)号：US4503478A
公开(公告)日：1985-03-05
申请号：US52207
申请日：1979-06-26
申请人： Kunio Seki , Ritsuji Takeshita
发明人： Kunio Seki , Ritsuji Takeshita
CPC分类号： H03F1/52
摘要： Two output transistors constituting a push-pull output amplifier circuit are connected in series between a power supply and a grounded point, and an output terminal is disposed at a point where the two output transistors are commonly connected. An operation detector circuit detects the operation of one output transistor. A level detector circuit detects a d-c voltage level at the output terminal. The two output transistors are driven by a drive circuit in a push-pull manner. The output of the operation detector circuit and the output of the level detector circuit control the drive circuit via a control circuit. When the operation detector circuit detected the fact that the operation of one output transistor has deviated beyond a predetermined detection level, the control circuit works to confine the operation of the abovementioned output transistor within a predetermined restriction level via the drive circuit. The power loss in the restriction level is smaller than the power loss in the detection level. During a period in which the output terminal is short-circuited to the grounded point in a d-c manner, the level detector circuit so controls the control circuit that the operation of the abovementioned one output transistor is confined within the restriction level.
摘要翻译： 构成推挽输出放大器电路的两个输出晶体管串联在电源和接地点之间，并且输出端子设置在两个输出晶体管共同连接的点处。 操作检测器电路检测一个输出晶体管的操作。 电平检测器电路检测输出端子处的d-c电压电平。 两个输出晶体管以推挽方式由驱动电路驱动。 操作检测器电路的输出和电平检测器电路的输出通过控制电路来控制驱动电路。 当操作检测器电路检测到一个输出晶体管的操作已经偏离超过预定检测电平的事实时，控制电路通过驱动电路将上述输出晶体管的操作限制在预定限制电平内。 限制级别的功率损耗小于检测级别的功率损耗。 在输出端子以d-c方式与接地点短路的期间中，电平检测电路对控制电路进行控制，使得上述一个输出晶体管的动作被限制在限制电平内。
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公开(公告)号：US4403240A
公开(公告)日：1983-09-06
申请号：US200459
申请日：1980-10-24
申请人： Kunio Seki , Ritsuji Takeshita
发明人： Kunio Seki , Ritsuji Takeshita
IPC分类号： H01L21/822 , H01L21/3205 , H01L21/60 , H01L23/48 , H01L23/50 , H01L23/52 , H01L23/528 , H01L23/58 , H01L27/02 , H01L27/04
CPC分类号： H01L24/06 , H01L23/50 , H01L23/528 , H01L23/58 , H01L24/05 , H01L24/49 , H01L27/0229 , H01L2223/6611 , H01L2224/04042 , H01L2224/05553 , H01L2224/05554 , H01L2224/05624 , H01L2224/0603 , H01L2224/45124 , H01L2224/45144 , H01L2224/48247 , H01L2224/48465 , H01L2224/48624 , H01L2224/48724 , H01L2224/49113 , H01L2224/49171 , H01L2224/49175 , H01L24/45 , H01L24/48 , H01L2924/00014 , H01L2924/01006 , H01L2924/01013 , H01L2924/01014 , H01L2924/01015 , H01L2924/01023 , H01L2924/01074 , H01L2924/01075 , H01L2924/01079 , H01L2924/01082 , H01L2924/12036 , H01L2924/14 , H01L2924/19041 , H01L2924/19043 , H01L2924/30105
摘要： A semiconductor integrated circuit device for an amplifier circuit including a semiconductor substrate in which an audio amplifier circuit is formed in an integrated circuit form, at least one first wire bonding pad which is formed on said semiconductor substrate to ground said audio amplifier circuit, and an externally connecting terminal which is provided being separated away from said semiconductor substrate and which is electrically connected to said first wire bonding pad via a metal wire, wherein the improvement comprises a wire bonding pad for the substrate which is formed on said semiconductor substrate being separated away from said first wire bonding pad, and which grounds said semiconductor substrate, and a metallic connector wire which electrically connects said wire bonding pad for the substrate to said externally connecting terminal.
摘要翻译： 一种用于放大器电路的半导体集成电路器件，包括其中以集成电路形式形成音频放大器电路的半导体衬底，形成在所述半导体衬底上以对接所述音频放大器电路的至少一个第一引线接合焊盘，以及 所述外部连接端子被设置为与所述半导体衬底分离并且经由金属线电连接到所述第一引线接合焊盘，其中所述改进包括形成在所述半导体衬底上的用于衬底的引线焊盘，所述引线焊盘被分离 从所述第一引线接合焊盘接地，并且将所述半导体衬底接地，以及将所述衬底的所述引线焊盘电连接到所述外部连接端子的金属连接器线。
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公开(公告)号：US4543539A
公开(公告)日：1985-09-24
申请号：US523970
申请日：1983-08-17
申请人： Kunio Seki , Ritsuji Takeshita
发明人： Kunio Seki , Ritsuji Takeshita
CPC分类号： H03F1/305
摘要： An amplifier comprises an amplifier circuit for amplifying an input signal and a supply voltage detector for controlling the operation of the amplifier circuit. The supply voltage detector has hysteresis characteristics as to a first threshold voltage and a second threshold voltage which are different from each other in order to detect the magnitudes of the supply voltage. The amplifying operation of the amplifier circuit is controlled as to the start-up and turn-off operation thereof by an output signal of the supply voltage detector.
摘要翻译： 放大器包括用于放大输入信号的放大器电路和用于控制放大器电路的操作的电源电压检测器。 电源电压检测器对于检测电源电压的大小而言彼此不同的第一阈值电压和第二阈值电压具有滞后特性。 通过电源电压检测器的输出信号来控制放大器电路的放大操作，使其起动和关断操作。
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公开(公告)号：US4414514A
公开(公告)日：1983-11-08
申请号：US236502
申请日：1981-02-20
申请人： Kunio Seki , Ritsuji Takeshita
发明人： Kunio Seki , Ritsuji Takeshita
CPC分类号： H03F1/526
摘要： A two signal amplifying system is constructed of first and second BTL amplifiers each including a phase splitter and first and second push-pull output circuits. In each of the first and second push-pull output circuits, output transistors are connected between a power source and output terminals, and detectors for detecting the operating states of said transistors are connected with the output transistors constituting the aforementioned first and second push-pull output circuits, respectively. The outputs of those two detectors are fed to a control circuit. The output of the control circuit renders the two output transistors nonconductive in case at least one of the two output transistors deviates from a predetermined operating range.
摘要翻译： 两个信号放大系统由第一和第二BTL放大器构成，每个BTL放大器包括分相器和第一和第二推挽输出电路。 在第一和第二推挽输出电路中的每一个中，输出晶体管连接在电源和输出端之间，用于检测所述晶体管的工作状态的检测器与构成上述第一和第二推挽的输出晶体管连接 输出电路。 这两个检测器的输出被馈送到控制电路。 在两个输出晶体管中的至少一个偏离预定工作范围的情况下，控制电路的输出使两个输出晶体管不导通。
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