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公开(公告)号：US4540951A
公开(公告)日：1985-09-10
申请号：US523258
申请日：1983-10-27
申请人： Akio Ozawa , Susumu Sueyoshi , Keishi Sato , Kikuo Ishikawa , Kiyomi Yatsuhashi , Satoshi Ishii , Masamichi Yumino
发明人： Akio Ozawa , Susumu Sueyoshi , Keishi Sato , Kikuo Ishikawa , Kiyomi Yatsuhashi , Satoshi Ishii , Masamichi Yumino
CPC分类号： H03F3/26 , H03F1/32 , H03F1/3217 , H03F1/34 , H03F3/30 , H03F3/3076
摘要： A push-pull amplifer circuit using bipolar transistors in which non-linear distortion caused by the base-emitter voltages of the amplifying transistors of the circuit is eliminated without the use of negative AC feedback and in which variations in a DC output level at the output terminal of the amplifier are detected and fed back to the input side of the amplifier whereby the stability of the circuit at very low frequencies is remarkably improved. A first amplifier stage includes a first transistor having a base to which an input signal is applied and a second transistor the base of which is coupled to an output of the first transistor with the second transistor being of the opposite conductivity type of the first transistor. A current mirror circuit supplies currents to the first and second transistors with the currents thus supplied having a constant ratio. A second amplifying stage is provided having the same construction. A load is coupled to be driven by the current flowing through the first transistor in the first amplifying stage and by the corresponding transistor in the second amplifying stage. Variations in the output of the circuit are detected to provide a DC feedback voltage which is coupled back to emitter circuits in the input stages of the amplifier.
摘要翻译： 使用双极晶体管的推挽放大电路，其中消除了由电路的放大晶体管的基极 - 发射极电压引起的非线性失真，而不使用负的AC反馈，并且其中输出端的DC输出电平的变化 检测放大器的端子并将其反馈到放大器的输入侧，从而显着提高电路在非常低频率下的稳定性。 第一放大器级包括第一晶体管，其具有施加输入信号的基极和第二晶体管，第二晶体管的基极耦合到第一晶体管的输出，第二晶体管具有与第一晶体管相反的导电类型。 电流镜电路以这样提供的具有恒定比例的电流向第一和第二晶体管提供电流。 提供具有相同结构的第二放大级。 负载被耦合以由流过第一放大级中的第一晶体管的电流和第二放大级中的相应晶体管驱动。 检测电路输出的变化以提供DC反馈电压，该反馈电压被耦合回到放大器的输入级中的发射极电路。
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公开(公告)号：US4433305A
公开(公告)日：1984-02-21
申请号：US188792
申请日：1980-09-19
申请人： Akio Ozawa , Susumu Sueyoshi , Keishi Sato , Kikuo Ishikawa , Kiyomi Yatsuhashi , Satoshi Ishii , Masamichi Yumino
发明人： Akio Ozawa , Susumu Sueyoshi , Keishi Sato , Kikuo Ishikawa , Kiyomi Yatsuhashi , Satoshi Ishii , Masamichi Yumino
CPC分类号： H03F3/26 , H03F1/32 , H03F1/3217 , H03F1/34 , H03F3/30 , H03F3/3076
摘要： A push-pull amplifier circuit using bipolar transistors in which non-linear distortion caused by the base-emitter voltages of the amplifying transistors of the circuit is eliminated without the use of negative AC feedback and in which variations in a DC output level at the output terminal of the amplifier are detected and fed back to the input side of the amplifier whereby the stability of the circuit at very low frequencies is remarkably improved. A first amplifier stage includes a first transistor having a base to which an input signal is applied and a second transistor the base of which is coupled to an output of the first transistor with the second transistor being of the opposite conductivity type to the first transistor. A current mirror circuit supplies currents to the first and second transistors with the currents thus supplied having a constant ratio. A second amplifying stage is provided having the same construction. A load is coupled to be driven by the current flowing through the first transistor in the first amplifying stage and by the corresponding transistor in the second amplifying stage. Variations in the output of the circuit are detected to provide a DC feedback voltage which is coupled back to emitter circuits in the input stages of the amplifier.
摘要翻译： 使用双极晶体管的推挽放大器电路，其中消除由电路的放大晶体管的基极 - 发射极电压引起的非线性失真，而不使用负的AC反馈，并且其中输出端的DC输出电平的变化 检测放大器的端子并将其反馈到放大器的输入侧，从而显着提高电路在非常低频率下的稳定性。 第一放大器级包括第一晶体管，其具有施加输入信号的基极和第二晶体管，第二晶体管的基极耦合到第一晶体管的输出，第二晶体管具有与第一晶体管相反的导电类型。 电流镜电路以这样提供的具有恒定比例的电流向第一和第二晶体管提供电流。 提供具有相同结构的第二放大级。 负载被耦合以由流过第一放大级中的第一晶体管的电流和第二放大级中的相应晶体管驱动。 检测电路输出的变化以提供DC反馈电压，该反馈电压被耦合回到放大器的输入级中的发射极电路。
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43.发明授权
公开(公告)号：US4245231A
公开(公告)日：1981-01-13
申请号：US973407
申请日：1978-12-26
申请人： Robert B. Davies
发明人： Robert B. Davies
CPC分类号： H03F3/30 , H01L27/0777
摘要： A combination capacitor and transistor structure is described wherein the capacitor is formed integrally with the emitter electrode of the transistor. The transistor is formed in a monolithic integrated circuit using generally known techniques and constitutes a vertically integrated PNP device. The emitter electrode of the transistor which comprises a P+ diffusion region is of a predetermined area which is large enough to form the bottom plate of the capacitor. The top plate of the capacitor is formed by growing a dielectric material over the diffused emitter region and then forming metallization thereover. The combination capacitor and transistor structure may be utilized in a bias network for biasing the output stage of an operational amplifier in a class AB mode. The capacitor formed in the combination structure may be utilized as the compensation capacitor in such operational amplifier which utilizes pole splitting techniques. The improvement provided by the invention reduces the surface area of the semiconductor die chip required to form the capacitor and transistor which facilitates greater device density on a particular die chip.
摘要翻译： 描述了组合电容器和晶体管结构，其中电容器与晶体管的发射极整体形成。 晶体管使用通常已知的技术形成在单片集成电路中，并构成垂直集成的PNP器件。 包括P +扩散区的晶体管的发射电极具有足够大以形成电容器底板的预定面积。 电容器的顶板通过在扩散的发射极区域上生长介电材料，然后在其上形成金属化而形成。 组合电容器和晶体管结构可以用在偏置网络中，用于在AB类模式中偏置运算放大器的输出级。 形成在组合结构中的电容器可以用作利用极点分割技术的这种运算放大器中的补偿电容器。 本发明提供的改进减少了形成电容器和晶体管所需的半导体芯片的表面积，这有助于在特定芯片上更大的器件密度。
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公开(公告)号：US4140976A
公开(公告)日：1979-02-20
申请号：US835638
申请日：1977-09-22
申请人： David Wartofsky
发明人： David Wartofsky
摘要： A class B push-pull transistor power amplifier is disclosed having two amplification branches each of which is internally compensated in the signal processing/voltage amplifying section thereof for the effects of temperature on the transistors contained therein by allowing the outputs of the respective branches to drift apart slightly with temperature and using a portion of the quiesent current thus produced to alter the bias on the inputs of the respective branches.
摘要翻译： 公开了一种B类推挽晶体管功率放大器，其具有两个放大支路，每个放大支路在其信号处理/电压放大部分中被内部补偿，用于通过允许各个分支的输出漂移对温度对其中包含的晶体管的影响 与温度稍微分开并且使用如此产生的静态电流的一部分来改变相应分支的输入上的偏置。
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45.发明授权
公开(公告)号：US4121168A
公开(公告)日：1978-10-17
申请号：US827212
申请日：1977-08-24
申请人： Robert M. Stitt
发明人： Robert M. Stitt
CPC分类号： H03F1/34 , H03F1/30 , H03F3/085 , H03F3/30 , H03F3/3072
摘要： A complementary transistor output circuit and method incorporates an optical coupler including a light emitting diode and a phototransistor connected between the base electrodes of a complementary pair of output transistors including a PNP transistor and an NPN transistor. The emitter of each of the output transistors is connected to an output of the output circuit. The base electrodes of the PNP output transistor and the NPN output transistor are connected, respectively, to first and second current source circuits. The collector electrode of the NPN output transistor is coupled by means of a first feedback circuit including a first resistor and a PNP transistor to the anode of a light emitting diode. The collector electrode of the PNP output transistor is coupled by means of a second feedback circuit to include a second resistor and an NPN transistor to the cathode of the light emitting diode. A phototransistor operates to effectively shunt base drive current supplied by the two current source circuits to the PNP and NPN output transistors to establish a bias voltage, and to maintain a constant quiescent bias current through the output transistors. The magnitude of the quiescent bias current is determined by the resistances of the first and second resistors and by the base-to-emitter voltages of the transistors in the first and second feedback circuits. The method of the invention includes sensing an increase in the bias current in one of the output transistors, increasing the current through the light emitting diode in response to the increase in the bias current, and directing the emitted light to the base of the phototransistor to decrease the bias current.
摘要翻译： 互补晶体管输出电路和方法包括光耦合器，其包括连接在包括PNP晶体管和NPN晶体管的互补输出晶体管对的基极之间的发光二极管和光电晶体管。 每个输出晶体管的发射极连接到输出电路的输出端。 PNP输出晶体管的基极和NPN输出晶体管分别连接到第一和第二电流源电路。 NPN输出晶体管的集电极通过包括第一电阻器和PNP晶体管的第一反馈电路耦合到发光二极管的阳极。 PNP输出晶体管的集电极通过第二反馈电路耦合，以将第二电阻和NPN晶体管包括到发光二极管的阴极。 光电晶体管用于将两个电流源电路提供的基极驱动电流有效地分流到PNP和NPN输出晶体管，以建立偏置电压，并保持通过输出晶体管的恒定静态偏置电流。 静态偏置电流的大小由第一和第二电阻器的电阻和第一和第二反馈电路中的晶体管的基极 - 发射极电压决定。 本发明的方法包括感测输出晶体管之一中的偏置电流的增加，响应于偏置电流的增加而增加通过发光二极管的电流，并将发射的光引导到光电晶体管的基极 降低偏置电流。
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公开(公告)号：US4028630A
公开(公告)日：1977-06-07
申请号：US660699
申请日：1976-02-23
申请人： Wilhelm Graffenberger , Gerd Onken
发明人： Wilhelm Graffenberger , Gerd Onken
摘要： A push-pull B-stage in IC is arranged with an additional transistor in such a manner that one transistor in the IC and the additional transistor together constitute a new push-pull amplifier while the transistor in the IC is loaded to a higher extent and the other final stage transistor in the IC only serves as a driver for the additional transistor.
摘要翻译： IC中的推挽B级配置有附加晶体管，使得IC中的一个晶体管和附加晶体管一起构成新的推挽放大器，同时将IC中的晶体管加载到更高的程度， IC中的另一个最后级晶体管仅用作附加晶体管的驱动器。
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公开(公告)号：US3889202A
公开(公告)日：1975-06-10
申请号：US41574073
申请日：1973-11-14
申请人： SUZUKI TADAO
发明人： SUZUKI TADAO
摘要： A muting circuit includes a voltage detecting circuit for detecting a change in voltage of a voltage source and includes a switching transistor connected across an input terminal of an output transistor in a power amplifier, the combination thereof being operative to attenuate the drive signal of the output transistor in accordance with an output of the voltage detecting circuit.
摘要翻译： 静音电路包括用于检测电压源的电压变化的电压检测电路，并且包括连接在功率放大器中的输出晶体管的输入端上的开关晶体管，其组合可用于衰减输出的驱动信号 晶体管根据电压检测电路的输出。
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公开(公告)号：US3787730A
公开(公告)日：1974-01-22
申请号：US3787730D
申请日：1971-12-29
申请人： UNITED AIRCRAFT CORP
CPC分类号： H03F3/30 , Y10T307/685 , Y10T307/707
摘要： A load is connected across one DC source of a first polarity and is connected to the opposite polarity of a second DC source, the two sources being connected in series with a capacitor/resistor network, or other voltage maintaining circuit, connected in parallel with the series combination of the two sources. The first source drives the load in one polarity and the second source drives the load in the other polarity thereby to achieve rapid slewing of the voltage across the load. In another embodiment a fixed power source may be connected in series with the first power source so that the slewing of voltage across the load occurs above a given reference level. The first and second sources are driven in a complementary fashion so that the sum of their instantaneous output voltages is always constant and equal to the individual maximum voltage which each may obtain. Since the slewed sources comprise a high voltage bilateral system, feedback may be utilized for stability and accuracy.
摘要翻译： 负载连接在第一极性的一个DC源上，并且连接到第二DC源的相反极性，两个源与电容器/电阻器网络或其他保持电路串联连接，并联连接到 系列组合的两个来源。 第一个驱动器以一个极性驱动负载，第二个驱动器以另一个极性驱动负载，从而实现跨负载的电压的快速回转。 在另一个实施例中，固定电源可以与第一电源串联连接，使得横跨负载的电压的回转高于给定的参考电平。 第一和第二源以互补的方式驱动，使得其瞬时输出电压的总和总是恒定并且等于每个可获得的单个最大电压。 由于压电源包括高压双边系统，因此可以利用反馈来获得稳定性和准确性。
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