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公开(公告)号：US3731215A
公开(公告)日：1973-05-01
申请号：US3731215D
申请日：1971-08-06
申请人： GEN ELECTRIC
CPC分类号： H03G1/0023 , H03G1/0052
摘要： An amplifier of controllable gain which is d.c. coupled throughout and capable of wide band operation is described. It employs a first and a second differential amplifier for producing the principal voltage gain of the amplifier. The differential amplifiers are interspersed with paired buffer amplifiers in emitter follower configuration, and a d.c. feedback path is provided to correct for any d.c. offset. Control of the gain of the first differential amplifier is implemented by an impedance connected in series with the base leads of the transistors and control of the collector emitter voltage to provide ''''forward'''' gain control operation. Control of the gain of the second differential amplifier is implemented by control of the emitter currents and by insertion in the emitter leads of a nonlinear impedance comprising a diode and a shunt resistance. The amplifier is of high gain and wide bandwidth and is suitable for amplification at intermediate frequencies (44 megahertz) of a television signal. The gain control range equals the forward gain of the amplifier. The circuit is adapted for integrated circuit fabrication.
摘要翻译： 可控增益放大器，直流 描述了耦合在整个并且能够进行宽带操作的功能。 它采用第一和第二差分放大器来产生放大器的主电压增益。 差分放大器散布在发射极跟随器配置中的成对缓冲放大器，并且直流 提供反馈路径来纠正任何直流 抵消。 通过与晶体管的基极引线串联的阻抗和集电极发射极电压的控制来实现对第一差分放大器的增益的控制，以提供“正向”增益控制操作。 第二差分放大器的增益的控制通过控制发射极电流以及通过插入包括二极管和分流电阻的非线性阻抗的发射极引线来实现。 放大器具有高增益和宽带宽，适用于电视信号的中频（44兆赫兹）放大。 增益控制范围等于放大器的正向增益。 该电路适用于集成电路制造。
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2.发明授权
公开(公告)号：US3768061A
公开(公告)日：1973-10-23
申请号：US3768061D
申请日：1971-10-22
申请人： GEN ELECTRIC
摘要： The present invention treats a push-button switch assembly with integral resistance which functions as a voltage divider having individually selectable and individually adjustable taps. The taps are selected by individual push-buttons. Individual adjusting knobs normally arranged behind each push-button provide for tap adjustment. The assembly is suitable for use in an electronically tuned television receiver wherein it provides both channel selection and fine tuning for a selected channel.
摘要翻译： 本发明处理具有积分电阻的按钮开关组件，其作为具有单独可选择和单独调节的抽头的分压器。 水龙头由单独的按钮选择。 通常布置在每个按钮后面的各个调节旋钮用于分接头调节。 该组件适用于电子调谐电视接收机，其中为所选择的频道提供频道选择和微调。
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公开(公告)号：US3723895A
公开(公告)日：1973-03-27
申请号：US3723895D
申请日：1971-11-10
申请人： GEN ELECTRIC
发明人： PEIL W
CPC分类号： H03G1/0023 , H03G3/3052
摘要： An amplifier of controllable gain which is d.c. coupled throughout and capable of wide band operation is described. It employs a cascode differential amplifier first stage and a differential amplifier second stage for producing the principal voltage gain of the amplifier. Control of the gain of the cascode differential amplifier is achieved by the application of gain control potentials to the bases of the cascoded upper rank transistors. Gain reduction is successively produced by saturation of the lower rank transistors, the degenerative effects of two impedances connected in series with the base leads of the lower rank transistors, and finally by cut-off of the upper rank transistors. The resultant gain control characteristic has a steep initial, gradual central and a steep final slope. The total range of gain control is in excess of the forward gain of the amplifier. The amplifier is of high gain and wide bandwidth and is suitable for amplification at intermediate frequencies (44 megahertz) of a television signal. The circuit is adapted for integrated circuit fabrication.
摘要翻译： 可控增益放大器，直流 描述了耦合在整个并且能够进行宽带操作的功能。 它采用共源共栅差分放大器第一级和差分放大器第二级，用于产生放大器的主要电压增益。 通过将增益控制电位施加到级联高级晶体管的基极来实现对共源共栅差分放大器的增益的控制。 通过下级晶体管的饱和，与下级晶体管的基极引线串联连接的两个阻抗的退化效应，最后通过上级晶体管的截止，依次产生增益减小。 所得到的增益控制特性具有陡峭的初始，逐渐中心和陡峭的最终斜率。 增益控制的总范围超过放大器的正向增益。 放大器具有高增益和宽带宽，适用于电视信号的中频（44兆赫兹）放大。 该电路适用于集成电路制造。
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公开(公告)号：US3831078A
公开(公告)日：1974-08-20
申请号：US32209273
申请日：1973-01-08
申请人： GEN ELECTRIC
发明人： PEIL W
CPC分类号： H03K17/601 , H02M3/155 , H02M7/537 , H03K2217/0036
摘要： The transistor switching network comprises a power transistor, used to deliver power from a DC source to a load, which is switched at a rate at which stored charge in the transistor potentially increases the internal power dissipation. A current transformer is provided comprising a small saturable core whose primary carries collector current and whose secondary couples the induced voltage to the base. The core of the current transformer creates an initial and a terminal transient which steepens the switching characteristic and reduces the power dissipation in the transients. The invention has applicaton to regulators and to DC to DC converters.
摘要翻译： 晶体管开关网络包括功率晶体管，用于将功率从DC源传输到负载，其以晶体管中的存储电荷潜在地增加内部功率耗散的速率切换。 提供了一种电流互感器，其包括小的饱和磁芯，其主要承载集电极电流，并且其感应电压二次耦合到基极。 电流互感器的核心产生初始和终端瞬态，这会突变开关特性，并降低瞬态中的功耗。 本发明适用于调节器和DC-DC转换器。
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公开(公告)号：US3742130A
公开(公告)日：1973-06-26
申请号：US3742130D
申请日：1971-08-06
申请人： GEN ELECTRIC
发明人： PEIL W
摘要： A receiver for the reception of black and white or color television signals is disclosed which employs synchronous signal detection. Employing a highly linear synchronous detector of appropriately large bandwidth permits all portions of the signal to be detected at the original levels in the same detector without mutual interference. The detected portions are then separated at base band after detection by simplified filters. A single wide band lumped filter passing the whole channel at an intermediate frequency may be employed for interchannel separation prior to detection. The design is intended for either discrete or monolithic solid state fabrication, the latter form permitting highly desirable realizations of critical circuits at low cost.
摘要翻译： 公开了用于接收黑白或彩色电视信号的接收机，其采用同步信号检测。 采用适当大带宽的高度线性的同步检波器可以使信号的所有部分以相同检测器的原始电平被检测到，而无需相互干扰。 然后通过简化的滤波器在检测到的基带之后将检测到的部分分离。 在检测之前可以采用以中频通过整个信道的单个宽带集总滤波器进行信道间分离。 该设计旨在用于离散或单片固态制造，后者形式允许以低成本高度理想地实现关键电路。
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公开(公告)号：US3838210A
公开(公告)日：1974-09-24
申请号：US40207373
申请日：1973-10-01
申请人： GEN ELECTRIC
发明人： PEIL W
CPC分类号： H04N5/52 , H03G3/3068
摘要： An automatic gain control system incorporating a novel amplifier of controllable gain is described. The amplifier is d.c. coupled throughout and capable of wideband operation. It employs a cascoded differential transistor amplifier for producing the principal voltage gain supplemented by input and output emitter followers. Gain control is achieved by the application of gain control potentials to the bases of the upper rank transistors. Gain reduction is produced first in the upper rank by the controlled degeneration produced by a pair of nonlinear impedances in series with the emitter leads of the upper rank transistors, and sequentially in the lower rank transistors by the controlled degeneration produced by two pairs of nonlinear impedances coupled in a degenerative feedback path about the lower rank transistors and in the input circuit to a pair of input emitter followers. In addition, the amplifier produces an indication of gain control action which, when the amplifier is used as an intermediate frequency amplifier of a television system, permits one to derive a second gain control signal, which after thresholding may be used for further gain reduction in the tuner. The amplifier is adapted for integrated circuit fabrication.
摘要翻译： 描述了包含可控增益的新型放大器的自动增益控制系统。 放大器是直流 并且能够进行宽带操作。 它采用级联差分晶体管放大器，用于产生由输入和输出发射极跟随器补充的主电压增益。 通过将增益控制电位应用于上级晶体管的基极来实现增益控制。 通过与上级晶体管的发射极引线串联的一对非线性阻抗产生的受控变性，并通过由两对非线性阻抗产生的受控变性依次产生在上级中的增益减小 耦合在围绕下级晶体管的退化反馈路径中，并且在输入电路中耦合到一对输入发射极跟随器。 此外，放大器产生增益控制动作的指示，当放大器用作电视系统的中频放大器时，允许一个导出第二增益控制信号，其在阈值之后可用于进一步增益减小 调谐器 该放大器适用于集成电路制造。
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公开(公告)号：US3806634A
公开(公告)日：1974-04-23
申请号：US28244272
申请日：1972-08-21
申请人： GEN ELECTRIC
发明人： PEIL W , ABBOTT H , MC FADYEN R
CPC分类号： H04N9/66
摘要： A color television demodulator is disclosed for processing the NTSC color signal. The video signal is converted to base band and two color difference components are derived in two four-quadrant multipliers during video. During burst, which precedes each line of video information, two control signals are derived in a time multiplexed fashion from the same pair of four-quadrant multipliers. The demodulated color difference components are recombined with the luminance to provide the R, G, B signals for display. The demodulated burst is used to derive a phase control voltage for synchronizing the local oscillator used in the demodulation process. The demodulated burst is also used for deriving a color amplitude control voltage for stabilizing the color intensity. The demodulator circuitry is designed for integrated circuit fabrication with a minimum ''''pin'''' count and a minimum of outboarded components. The multiplex color television demodulator of the present invention, which is the invention of H. W. Abbott, R. J. McFadyen and W. Peil, is related to the prior invention of H. W. Abbott and J. J. Zampini, and embodied in a patent application similarly entitled, assigned to the Assignee of the present application and filed concurrently.
摘要翻译： 公开了一种用于处理NTSC彩色信号的彩色电视解调器。 视频信号被转换为基带，并且在视频期间在两个四象限乘法器中导出两个色差分量。 在每一行视频信息之前的脉冲串期间，以同一对四象限乘法器的时间复用方式导出两个控制信号。 将解调的色差分量与亮度重新组合以提供用于显示的R，G，B信号。 解调的脉冲串用于导出用于使解调处理中使用的本地振荡器同步的相位控制电压。 解调的脉冲串也用于导出用于稳定色彩强度的色彩幅度控制电压。 解调器电路设计用于集成电路制造，具有最小的“引脚”数量和最小的外置元件。
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公开(公告)号：US3763439A
公开(公告)日：1973-10-02
申请号：US3763439D
申请日：1972-08-21
申请人： GEN ELECTRIC
发明人： PEIL W
摘要： A voltage controlled oscillator is described particularly suited for APC and AFC applications and having a wide phase shift control range. The oscillator is adapted for IC fabrication with a minimum ''''pin'''' count and a minimum of outboarded components. The active portion of the circuit takes the form of a modified four-quadrant multiplier, with an external high Q resonant circuit being coupled in a feedback path between a load common to two upper rank transistors and the input to one lower rank transistor. The D.C. control voltage is applied as an interbase potential to the upper rank transistors to control the current in the right and left branches of the multiplier, and a phase shift network is inserted in one branch to restrict the phase difference between the two branches to less than 180*, or typically 135*. Controlled parasitic delays introduce additional delay in the active circuit approximately equal to one half this phase difference. These provisions insure a regenerative condition and prevent pulling of the resonant circuit in either the direction of excessive phase advance or phase delay. The phase shift range exceeds 90*, typically equalling the phase difference between the current in the two branches.
摘要翻译： 描述了一种压控振荡器，特别适用于APC和AFC应用，并具有宽的相移控制范围。 该振荡器适用于具有最小“引脚”数量和最小外部元件的IC制造。 电路的有源部分采用修改的四象限乘法器的形式，外部高Q谐振电路耦合在两个上级晶体管公共的负载与一个下级晶体管的输入之间的反馈路径中。 将直流控制电压作为基极电位施加到上级晶体管，以控制乘法器的左右分支中的电流，并且将相移网络插入到一个分支中，以将两个分支之间的相位差限制到较小 180度以上，一般135度。 受控寄生延迟引起有源电路中的附加延迟大约等于该相位差的一半。 这些规定确保再生条件，并且防止在过度相位超前或相位延迟的方向上拉动谐振电路。 相移范围超过90°，通常等于两个分支中的电流之间的相位差。
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公开(公告)号：US3750042A
公开(公告)日：1973-07-31
申请号：US3750042D
申请日：1972-08-21
申请人： GEN ELECTRIC
发明人： PEIL W , MCFADYEN R
CPC分类号： H04N9/71 , H03G3/3052
摘要： A voltage controlled A.C. amplifier is described particularly suited for automatic gain control applications and in particular to automatic color control in a color television receiver. The amplifier is adapted for IC fabrication, with D.C. coupling throughout, having a minimum pin count, and a minimum of outboarded components. While the A.C. signal gain of the amplifier is controllable by voltage adjustment, the D.C. gain is substantially unity. The amplifier takes the form of a modified four-quadrant multiplier with two upper rank differentially connected transistor pairs whose emitters are driven by a lower rank differentially connected transistor pair, the latter preferably flanked by a pair of emitter followers. The input signal is normally applied to the base of one flanking emitter follower through a high pass coupling network. The gain control function is achieved by selective regenerative or degenerative feedback controlled by the interbase potential applied to the upper rank transistor pair. The feedback is applied to the lower rank transistors through a feedback network which is balanced for D.C. but which has a differential affect for A.C. and in particular a low pass coupling characteristic to the lower rank transistor to which the input signal is coupled.
摘要翻译： 描述了一种电压控制的交流放大器，特别适用于自动增益控制应用，特别适用于彩色电视接收机中的自动色彩控制。 该放大器适用于IC制造，具有直流耦合，具有最小引脚数和最小的外部元件。 虽然放大器的交流信号增益可以通过电压调节来控制，但直流增益基本上是一致的。 放大器采用经修改的四象限乘法器的形式，其具有两个上级差分连接的晶体管对，其发射极由较低级差分连接的晶体管对驱动，后者优选侧面为一对发射极跟随器。 输入信号通常通过高通耦合网络施加到一个侧翼发射极跟随器的基极。 增益控制功能通过由施加到上级晶体管对的基极间电位控制的选择性再生或退化反馈来实现。 通过反馈网络将反馈应用于低级晶体管，该反馈网络对于直流来说是平衡的，但是对于交流电流具有差分影响，特别是对输入信号耦合到的下级晶体管的低通耦合特性。
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