-
公开(公告)号：US3921090A
公开(公告)日：1975-11-18
申请号：US52375974
申请日：1974-11-14
Applicant: RCA CORP
Inventor： WHEATLEY JR CARL FRANKLIN , WITTLINGER HAROLD ALLEN
CPC classification number: H03F3/45071
Abstract: An operational transconductance amplifier comprises first and second transistors connected in a gain-controlled emitter-coupled differential amplifier configuration and provided active collector loads by the input ports of a first and a second current mirror amplifiers, respectively. The balanced signals appearing at the output ports of the first and the second current mirror amplifiers in response to the balanced signal variations in the collector currents of the first and second transistors are converted to single-ended form by a third current mirror amplifier having its input and output ports connected to the output ports of the first and second current mirror amplifiers, respectively. Improved high-frequency operation of the gain controllable operational transconductance amplifier as an analog multiplier is obtained by applying common mode currents to the input ports of the first and second current mirror amplifiers. The responses to these common mode currents counteract and cancel each other in the output signal from the operation transconductance amplifier.
Abstract translation: 运算跨导放大器包括以增益控制的发射极耦合差分放大器配置连接的第一和第二晶体管，并分别由第一和第二电流镜放大器的输入端口提供有源集电极负载。 响应于第一和第二晶体管的集电极电流的平衡信号变化而出现在第一和第二电流镜放大器的输出端口处的平衡信号由具有其输入的第三电流镜放大器转换成单端形式 以及分别连接到第一和第二电流镜放大器的输出端口的输出端口。 通过将共模电流施加到第一和第二电流镜放大器的输入端口来获得增益可控运算跨导放大器作为模拟乘法器的改进的高频操作。 这些共模电流的响应在来自运算跨导放大器的输出信号中相互抵消并相互抵消。
-
公开(公告)号：US3873933A
公开(公告)日：1975-03-25
申请号：US41416473
申请日：1973-11-08
Applicant: RCA CORP
Inventor： WHEATLEY JR CARL FRANKLIN
CPC classification number: H03F3/4508 , G05F3/265 , H03F3/347 , H03F3/45183 , H03F2203/45594 , H03F2203/45646 , H03F2203/45674 , H03F2203/45688
Abstract: An adjustable-gain current mirror amplifier comprises the parallel connected fixed gain current mirror amplifier and an adjustable-gain current amplifier. No appreciable off-set potential in input voltage is required to accommodate trimming of the adjustable-gain current mirror amplifier gain.
Abstract translation: 可调增益电流镜放大器包括并联的固定增益电流镜放大器和可调增益电流放大器。 不需要输入电压的明显的偏置电位来适应微调可调增益电流镜放大器增益。
-
公开(公告)号：US3904927A
公开(公告)日：1975-09-09
申请号：US36816173
申请日：1973-06-08
Applicant: RCA CORP
Inventor： WHEATLEY JR CARL FRANKLIN , SHEVCHENKO OLEKSIJ
CPC classification number: H03K4/085
Abstract: In a horizontal deflection circuit including a switch for coupling an energy source to a deflection yoke and for inducing alternating current in an output transformer, two horizontal deflection coils are serially coupled between the energy source and a point of reference potential and a winding of the output transformer is serially coupled between the two deflection coils and poled in the circuit such that the retrace pulse component developed in the winding opposes the retrace pulse developed across the coils for reducing the total pulse voltage across the coils.
Abstract translation: 在包括用于将能源耦合到偏转线圈并用于在输出变压器中感应交流电的开关的水平偏转电路中，两个水平偏转线圈串联耦合在能量源和参考电位点之间，并且输出的绕组 变压器串联耦合在两个偏转线圈之间并在电路中极化，使得绕组中产生的回扫脉冲分量与绕过线圈产生的回扫脉冲相反，以减少线圈两端的总脉冲电压。
-
公开(公告)号：US3886466A
公开(公告)日：1975-05-27
申请号：US36356273
申请日：1973-05-24
Applicant: RCA CORP
Inventor： WHEATLEY JR CARL FRANKLIN
CPC classification number: H03F3/211 , H03F1/305 , H03F1/307 , H03F1/34 , H03F3/3088
Abstract: Stacked transistor power amplifier stages in an integratedcircuit quasi-linear amplifier are supplied quiescent bias currents which vary in inverse proportion to their forward current gains. This causes their quiescent collector currents to be at sufficiently low levels to reduce to low values both distortion and quiescent power dissipation.
-
-
-
Search Results
4
records
(took 0.009 seconds)
