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1. 发明授权

US3816761A Comparator circuitry 失效
标题翻译：比较器电路
公开(公告)号：US3816761A
公开(公告)日：1974-06-11
申请号：US32063473
申请日：1973-01-02
申请人： RCA CORP
发明人： AHMED A
IPC分类号： G01R19/165 , G06G7/25 , H03K3/2885 , H03K3/2897 , H03K5/08 , H03K5/20 , H03K3/12
CPC分类号： H03K3/2897 , H03K3/2885
摘要： A dead-zone comparator includes first and second component voltage comparators used respectively to compare an input signal to a high reference level and to a low reference level, which reference levels may be programmable. A bistable is set by the output signal of one comparator and reset by the output signal of the other. These SET and RESET signals are opposite polarity currents, one of which is more severely constrained in value than the other, and are applied via a common SET-RESET buss to the bistable.
摘要翻译：死区比较器包括分别用于将输入信号与高参考电平和低参考电平进行比较的第一和第二分量电压比较器，该参考电平可以是可编程的。双稳态由一个比较器的输出信号设置，并由另一个比较器的输出信号复位。这些SET和RESET信号是相反的极性电流，其中一个电流的值比另一个更严格的约束，并通过一个公共的SET-RESET总线施加到双稳态电路。

2. 发明授权

US3757137A Low voltage reference circuit 失效
标题翻译：低电压参考电路
公开(公告)号：US3757137A
公开(公告)日：1973-09-04
申请号：US3757137D
申请日：1972-01-21
申请人： RCA CORP
发明人： AHMED A
IPC分类号： H03K3/2897 , H03K5/20 , H03F3/04 , H03K17/30
CPC分类号： H03K3/2897
摘要： The accurately predictable voltage difference between forward biased diodes carrying currents in a known ratio is used to obtain an output signal from a circuit whenever the input signal thereto exceeds an accurately known, set threshold, wherein the supply voltage to the circuit precludes the utilization of Zener diodes.

3. 发明授权

US3843933A Current amplifier 失效
标题翻译：电流放大器
公开(公告)号：US3843933A
公开(公告)日：1974-10-22
申请号：US34872373
申请日：1973-04-06
申请人： RCA CORP
发明人： AHMED A
IPC分类号： H03F3/343 , B23K1/20 , G05F3/26 , H03F1/30 , H03F3/34 , H03F3/347 , H03F1/34
CPC分类号： H03F1/302 , G05F3/265
摘要： A three-terminal current amplifier includes first and second transistors of a first conductivity type. Their respective collector electrodes are connected to input and output terminals of the current amplifier, respectively. Their emitter electrodes are each direct current conductively coupled to the common terminal of the current amplifier. Their base electrodes are coupled to the output circuit of a common-base transistor amplifier having its input circuit connected to the current amplifier input terminal. The common-base transistor amplifier employs a third transistor of a second conductivity type complementary to the first. The current gain of the current amplifier can be made to be independent of the individual current gains of the component transistors.
摘要翻译：三端电流放大器包括第一和第二导体类型的晶体管。它们各自的集电极分别连接到电流放大器的输入和输出端。它们的发射电极是直流电流导电耦合到电流放大器的公共端。它们的基极耦合到公共晶体管放大器的输出电路，其公共输入电路连接到电流放大器输入端。公共晶体管放大器采用与第一导体类型互补的第二导电类型的第三晶体管。可以使电流放大器的电流增益与组件晶体管的各个电流增益无关。

4. 发明授权

US3831113A Relaxation oscillator 失效
标题翻译：放松振荡器
公开(公告)号：US3831113A
公开(公告)日：1974-08-20
申请号：US36584073
申请日：1973-06-01
申请人： RCA CORP
发明人： AHMED A
IPC分类号： H03K4/50 , H03K3/02 , H03K3/0231 , H03K3/03 , H03K4/502 , H03K7/00 , H03K7/04 , H03K7/06 , H03K7/08
CPC分类号： H03K7/06 , H03K3/0231 , H03K3/03 , H03K3/0322 , H03K4/502 , H03K7/00 , H03K7/04 , H03K7/08
摘要： A voltage comparator compares the voltage across a capacitor which is being charged with a reference voltage of a first value. When the voltage across the capacitor becomes equal to this first value, the comparator causes the reference voltage to switch to a second lower value and, a short time later, the capacitor is caused to switch from a charging to a discharging condition. When the two voltages again become equal, the process is reversed. In a preferred circuit, the means employed to delay the switching of the capacitor condition comprises a threshold detector connected to receive the reference voltage applied to the comparator and having a threshold intermediate the first and second reference voltage values.
摘要翻译：电压比较器将正在充电的电容器的电压与第一值的参考电压进行比较。当电容器两端的电压变得等于该第一值时，比较器使参考电压切换到第二较低值，并且稍后，使电容器从充电转换到放电状态。当两个电压再次相等时，该过程相反。在优选的电路中，用于延迟电容器状态的切换的装置包括阈值检测器，其被连接以接收施加到比较器的参考电压并且具有在第一和第二参考电压值之间的中间值。

5. 发明授权

US3846696A Current attenuator 失效
标题翻译：当前衰减器
公开(公告)号：US3846696A
公开(公告)日：1974-11-05
申请号：US38117673
申请日：1973-07-20
申请人： RCA CORP
发明人： AHMED A
IPC分类号： H03F1/30 , G05F3/22 , H03F3/34 , H03H7/25 , G05F3/14
CPC分类号： H03H7/253 , G05F3/222
摘要： A relatively small collector current flows in a junction transistor having its base and emitter electrode connected to a common terminal by first and second pluralities of serially connected semiconductor junctions, respectively, the first plurality of semiconductor junctions being arranged to be forward biased by a first current and the second plurality of semiconductor junctions arranged to be forward biased by a second current proportional to the first current. Such semiconductor junctions may comprise, for example, diode-connected transistors.
摘要翻译：相对较小的集电极电流在其晶体管中流动，其基极和发射极分别通过第一和第二多个串联连接的半导体结连接到公共端子，第一多个半导体结被布置为被第一电流正向偏置并且所述第二多个半导体结布置成正向偏置与所述第一电流成比例的第二电流。这样的半导体结可以包括例如二极管连接的晶体管。

6. 发明授权

US3825778A Temperature-sensitive control circuit 失效
标题翻译：温度敏感控制电路
公开(公告)号：US3825778A
公开(公告)日：1974-07-23
申请号：US33123473
申请日：1973-02-09
申请人： RCA CORP
发明人： AHMED A
IPC分类号： G01K3/00 , G01K7/01 , G05D23/20 , G05D23/24 , G05F1/10 , H03F1/42 , H03F1/52 , H03F3/30 , H04L12/10 , H04N5/63 , H03K17/00
CPC分类号： H03F3/3088 , G01K3/005 , G05D23/2034 , H03F1/52 , Y10T307/773
摘要： A temperature sensitive switching circuit includes a current source supplying two groups of serially connected diodes. The number of such diodes in the first group is smaller than that in the second so that the first group drawn substantially all of the source current and the second only an infinitesimal portion of this current. As temperature increases, the voltage across both groups of diodes decrease, but the ability of the second group to carry a substantial amount of current increases at a more rapid rate than this decreased voltage would tend to reduce such current, and increases non-linearly with temperature above a given threshold temperature. This non-linear increase in current flow may be used to sense temperature change and also to control the power responsible, either directly or indirectly, for this temperature change.
摘要翻译：温度敏感开关电路包括提供两组串联二极管的电流源。第一组中的这种二极管的数量小于第二组中的二极管的数量，使得第一组基本上绘制了该电流的基本上所有的源极电流，而第二组仅绘制了该电流的无穷小部分。随着温度的升高，两组二极管之间的电压降低，但是第二组以相比这个降低的电压更快的速率传输大量电流的能力将倾向于减小这种电流，并且非线性地增加温度高于给定的阈值温度。电流的这种非线性增加可用于感测温度变化，并且还可以直接或间接地控制对于该温度变化的功率。

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