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公开(公告)号：US4077013A
公开(公告)日：1978-02-28
申请号：US692781
申请日：1976-06-04
申请人： Gene S. Morez , James F. Griffin
发明人： Gene S. Morez , James F. Griffin
CPC分类号： H03F1/0261 , H03F3/3091
摘要： A power amplifier with an automatic bias control circuit is disclosed. The amplifier includes two complementary Darlington pairs operating in a push-pull mode providing output power. A bias control network including a switching transistor is coupled to the base circuits of the Darlington pairs for controlling the bias current delivered to the pairs. The transistor is switched on and off by a detecting circuit which senses the presence of input signals applied to the amplifier. The bias control network operates to minimize power consumption by the Darlington pairs when no input signal is present and to raise the bias level of the Darlington pairs without distortion in the output signal when an input is applied to the amplifier.
摘要翻译： 公开了一种具有自动偏置控制电路的功率放大器。 该放大器包括两个以提供输出功率的推挽模式工作的互补达林顿对。 包括开关晶体管的偏置控制网络耦合到达林顿对的基极电路，用于控制传输到对的偏置电流。 晶体管被检测电路接通和关断，该检测电路检测施加到放大器的输入信号的存在。 当没有输入信号时，偏置控制网络用于最小化达林顿对的功率消耗，并且当输入被施加到放大器时，在输出信号中提高达林顿对的偏置电平而不失真。
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公开(公告)号：US3898576A
公开(公告)日：1975-08-05
申请号：US40518573
申请日：1973-10-10
申请人： NIPPON ELECTRIC CO
发明人： FUKAYA HIROKAZU
CPC分类号： H03F3/3091 , H03F1/083 , H03F1/34 , H03F3/183
摘要： A direct-coupled amplifier circuit with negative feedback includes a first amplifier having an input terminal and a feedback terminal. A second amplifier further amplifies the signal amplified by the first amplifier, and a first resistor provides negative feedback of the second amplifier to the feedback terminal of the first amplifier. A series R-C circuit consisting of a capacitor and a second resistor is connected across the feedback terminal of the first amplifier and ground. A charging circuit charges the capacitor of the R-C circuit during the period immediately following the application of the power supply voltage, thereby to increase the voltage at the feedback terminal more rapidly than the voltage at the input terminal.
摘要翻译： 具有负反馈的直接耦合放大器电路包括具有输入端和反馈端的第一放大器。 第二放大器进一步放大由第一放大器放大的信号，第一电阻器向第一放大器的反馈端提供第二放大器的负反馈。 由电容器和第二电阻组成的串联R-C电路跨越第一放大器和地的反馈端连接。 在施加电源电压之后的期间，充电电路对R-C电路的电容器进行充电，从而使反馈端子处的电压比输入端子处的电压更快地增加。
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公开(公告)号：US3740657A
公开(公告)日：1973-06-19
申请号：US3740657D
申请日：1971-04-01
申请人： PHILIPS NV
发明人： THARMARATNAM P
CPC分类号： H03F1/307 , H03F3/3091 , H03F3/347
摘要： A transistor amplifier includes two coupled push-pull amplifier stages and bias stabilization is achieved by the use of a diodetransistor combination in the emitter leads of the respective complementary transistors which comprise the first stage.
摘要翻译： 晶体管放大器包括两个耦合的推挽放大器级，并且通过在构成第一级的各个互补晶体管的发射极引线中使用二极管 - 晶体管组合来实现偏置稳定。
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公开(公告)号：US3537023A
公开(公告)日：1970-10-27
申请号：US3537023D
申请日：1968-03-27
发明人： MYER ROBERT E
CPC分类号： H03F3/3077 , H03F3/3091
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5.发明授权
公开(公告)号：US3488551A
公开(公告)日：1970-01-06
申请号：US3488551D
申请日：1966-09-23
申请人： RAYTHEON CO
发明人： BRYDEN JOSEPH E
CPC分类号： G09G1/04 , H03F1/0244 , H03F3/3091 , H03K4/62 , H03K6/02
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6.发明申请SINGLE PHASE DIFFERENTIAL CONVERSION CIRCUIT, BALUN, SWITCH, AND COMMUNICATION DEVICE 有权单相差分转换电路，巴伦，开关和通信设备公开(公告)号：US20150092892A1
公开(公告)日：2015-04-02
申请号：US14394660
申请日：2013-05-14
申请人： SONY CORPORATION
发明人： Naoto Yoshikawa , Ken Yamamoto
CPC分类号： H03K5/023 , H03F3/3091 , H03H11/32 , H03K17/163 , H03K17/165 , H03K2217/0018 , H03K2217/0054 , H04B1/18
摘要： Provided with one or more first transistors of a first conductivity type each including a gate, a source, and a drain, the gate being connected to an input terminal, the source being configured to be connected to a first voltage source, the drain being connected to an output node, one or more second transistors of a second conductivity type each including a gate, a source, and a drain, the gate being connected to the input terminal, the source being configured to be connected to a second voltage source, the drain being connected to the output node, a first resistor that is inserted and connected between the input terminal and the output node, a first output terminal that is connected to the input terminal, and a second output terminal that is directly or indirectly connected to the output node.
摘要翻译： 具有一个或多个第一导电类型的第一晶体管，每个第一晶体管都包括栅极，源极和漏极，栅极连接到输入端，源极被配置为连接到第一电压源，漏极连接 到输出节点，一个或多个第二导电类型的第二晶体管，每个包括栅极，源极和漏极，栅极连接到输入端子，源极被配置为连接到第二电压源， 漏极连接到输出节点，插入并连接在输入端子和输出节点之间的第一电阻器，连接到输入端子的第一输出端子和直接或间接连接到输出端子的第二输出端子 输出节点。
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公开(公告)号：USRE29273E
公开(公告)日：1977-06-21
申请号：US562956
申请日：1975-03-27
申请人： Martin G. Reiffin
发明人： Martin G. Reiffin
IPC分类号： H03F3/30
CPC分类号： H03F3/3091
摘要： A transistor power amplifier is provided with direct-current-coupling between stages and to the loudspeaker. The output stage is push-pull single-ended and includes two transistors connected in series at a midpoint of the stage. A split power supply has a center-tap connected to one output terminal and the other output terminal is connected to said output stage midpoint. Amplification and drive stages are direct-current-coupled in cascade to the output stage. A direct-current negative feedback network extends from the output stage to an amplification stage to maintain the output terminals at substantially the same quiescent potential to prevent direct-current flow through the voice-coil of the loudspeaker.
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公开(公告)号：USB553460I5
公开(公告)日：1976-02-03
申请号：US55346075
申请日：1975-02-27
CPC分类号： H03G3/3042 , H03F1/52 , H03F3/3091
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公开(公告)号：US3835409A
公开(公告)日：1974-09-10
申请号：US40066673
申请日：1973-09-25
申请人： LAUB W
发明人： LAUB W
CPC分类号： H03F3/3091 , H03F1/327 , H03F1/3276
摘要： An amplifier for use with electric guitars for amplifying an electrical signal for application to a loudspeaker includes means for introducing crossover distortion in proportion to the amplitude of the electrical signal.
摘要翻译： 用于电吉他放大用于扬声器的电信号的放大器包括与电信号幅度成比例地引入交叉失真的装置。
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公开(公告)号：US3550025A
公开(公告)日：1970-12-22
申请号：US3550025D
申请日：1968-10-16
申请人： DAVID S STODOLSKY
发明人： STODOLSKY DAVID S
CPC分类号： H03F3/3091 , H03F1/52
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