-
公开(公告)号：US4225797A
公开(公告)日：1980-09-30
申请号：US912133
申请日：1978-06-02
申请人： Paul B. Fredrickson
发明人： Paul B. Fredrickson
摘要： A pulse generator circuit triggerable by a pulse of nuclear radiation. The pulse generator circuit includes a pair of transistors arranged, together with other electrical components, in the topology of a standard monostable multivibrator circuit. The circuit differs most significantly from a standard monostable multivibrator circuit in that the circuit is adapted to be triggered by a pulse of nuclear radiation rather than electrically and the transistors have substantially different sensitivities to radiation, due to different physical and electrical characteristics and parameters.One of the transistors is employed principally as a radiation detector and is in a normally non-conducting state and the other transistor is normally in a conducting state. When the circuit is exposed to a pulse of nuclear radiation, currents are induced in the collector-base junctions of both transistors but, due to the different radiation sensitivities of the transistors, the current induced in the collector-base junction of the radiation-detecting transistor is substantially greater than that induced in the collector-base junction of the other transistor. The pulse of radiation causes the radiation-detecting transistor to operate in its conducting state, causing the other transistor to operate in its non-conducting state. As the radiation-detecting transistor operates in its conducting state, an output signal is produced at an output terminal connected to the radiation-detecting transistor indicating the presence of a predetermined intensity of nuclear radiation.
摘要翻译： 脉冲发生器电路可由核辐射脉冲触发。 脉冲发生器电路包括与标准单稳态多谐振荡器电路的拓扑结构中的其它电气部件一起布置的一对晶体管。 该电路与标准单稳态多谐振荡器电路的差异最大，因为电路适合于由核辐射脉冲而不是电气触发，并且由于不同的物理和电气特性和参数，晶体管对辐射具有实质上不同的灵敏度。 晶体管中的一个主要用作辐射检测器，并且处于正常非导通状态，另一晶体管通常处于导通状态。 当电路暴露于核辐射脉冲时，在两个晶体管的集电极 - 基极结中感应出电流，但是由于晶体管的辐射灵敏度不同，在辐射检测的集电极 - 基极结中感应出的电流 晶体管基本上大于在另一个晶体管的集电极 - 基极结中感应的晶体管。 辐射脉冲使辐射检测晶体管工作在其导通状态，导致另一晶体管工作在其不导通状态。 当辐射检测晶体管工作在其导通状态时，在连接到放射线检测晶体管的输出端产生指示存在预定的核辐射强度的输出信号。
-
公开(公告)号：US4173736A
公开(公告)日：1979-11-06
申请号：US883963
申请日：1978-03-06
申请人： Charles K. Adams
发明人： Charles K. Adams
CPC分类号： G01R27/2605 , G01R31/045 , H04M1/24 , H04M3/30
摘要： A computer controlled facility is provided to detect capacitance, and hence defective connections, between a group of wires in a telephone handset cord and terminal blades of plugs connected at both ends of the cord. The test depends upon ascertaining the capacitance between a properly connected terminal blade and wire and the other terminal blade and wire connections to provide exact indications of the terminal blades and wires which are not properly connected. Capacitance is detected by connecting a good wire and blade connection along with another wire and blade in a capacitance network associated with one stage of a free running multivibrator which produces an output wave in accordance with the capacitance between the connected pairs of wires and blades. A delayed pulse is cyclically generated to act in conjunction with the output wave to control a bank of indicator lights to provide an indication of any defective wire to blade connections.
摘要翻译： 提供了一种计算机控制的设备来检测电话听筒线中的一组电线和连接在电线两端的插头的端子片之间的电容，因此有缺陷的连接。 测试取决于确定正确连接的端子刀片和电线之间的电容以及另一个端子刀片和电线连接，以提供未正确连接的端子刀片和电线的精确指示。 通过连接良好的电线和刀片连接以及与自由运行的多谐振荡器的一级相关联的电容网络中的另一线和刀片连接来检测电容，其产生根据所连接的线和刀片对之间的电容的输出波。 周期性地产生延迟脉冲以与输出波结合起来以控制一组指示灯以提供任何有缺陷的线对刀片连接的指示。
-
83.发明授权Circuit for generating pulses with duration proportional to quotient of two input voltages 失效用于产生具有两倍输入电压的时间的脉冲的电路的电路
公开(公告)号：US4039868A
公开(公告)日：1977-08-02
申请号：US590084
申请日：1975-06-25
申请人： Shigeo Aono , Hiromichi Nakamura , Hiroshige Ozawa
发明人： Shigeo Aono , Hiromichi Nakamura , Hiroshige Ozawa
摘要： First and second transistors are connected in a monostable multivibrator configuration. A capacitor is coupled between the collector of the first transistor and the base of the second transistor. A first control voltage is applied to the collector of the first transistor to charge the capacitor when the second transistor is conductive. A constant current source is provided to charge the capacitor at a constant rate determined by a second control voltage. The stored energy is discharged through the first transistor when energized in a successive cycle. The capacitor is recharged by the constant current source through the first transistor to linearly raise the potential at the base of second transistor. The transistors are triggered by the distributer of an engine so that a control pulse is generated for each revolution of the engine's output shaft. The width of the output pulse from the collector of second transistor is proportional to the first input voltage and inversely proportional to the second input voltage. When the pulse generators are cascaded in a suitable manner, the width of the output pulse is proportional to the product of the two input voltages.
-
公开(公告)号：US3852621A
公开(公告)日：1974-12-03
申请号：US3180770
申请日：1970-04-30
发明人： LIDE B , KOWALCHECK H
CPC分类号： G01R17/105 , G01K7/203 , G05D23/1913 , G05D23/24 , H03K3/284
摘要： Multivibrator apparatus in conjunction with a time measuring circuit utilizes two successive signals of different amplitudes to effect a control operation.
摘要翻译： 多谐振荡器与时间测量电路结合使用两个不同幅度的连续信号来实现控制操作。
-
85.发明授权Triggered bistable multivibrator circuits utilizing complenentary transistor pairs 失效触发式双稳态多谐振荡器电路利用一体化晶体管对
公开(公告)号：US3767944A
公开(公告)日：1973-10-23
申请号：US3767944D
申请日：1971-07-26
发明人： STEHLIN R
CPC分类号： H03K3/288 , H03K3/2823 , H03K3/284
摘要： The disclosure is directed to electronic multivibrator circuits utilizing two pairs of series connected complementary transistors, with the bases of each of the transistors being cross-coupled to the juncture point of the transistors of the opposite pair. A monostable multivibrator is provided which has the base of one of the transistors coupled through a resistance to ground potential, and includes a normally non-conductive transistor connected to receive a triggering signal for initiating a monostable timing period. A bistable multivibrator is provided which includes triggering transistors connected across symmetrical portions of the circuitry for receiving set and reset triggering signals to control the bistable operation of the circuit. A free-running multivibrator is provided which includes resistive current paths from two of the transistor bases to ground potential for generation of a periodic pulse train output upon the application of electrical power.
摘要翻译： 本公开涉及使用两对串联互补晶体管的电子多谐振荡器电路，每个晶体管的基极交叉耦合到相对对的晶体管的接合点。 提供单稳态多谐振荡器，其具有通过电阻接地电位耦合的晶体管之一的基极，并且包括连接以接收用于启动单稳态定时周期的触发信号的正常非导通晶体管。 提供了一种双稳态多谐振荡器，其包括连接在电路的对称部分上的触发晶体管，用于接收设置和复位触发信号以控制电路的双稳态操作。 提供了一种自由运行的多谐振荡器，其包括从两个晶体管基极到接地电位的电阻电流路径，用于在施加电力时产生周期性脉冲串输出。
-
公开(公告)号：US3727141A
公开(公告)日：1973-04-10
申请号：US3727141D
申请日：1971-11-10
申请人： BURROUGHS CORP
发明人： FINLAY J
IPC分类号： H03K3/284 , H03K5/1254 , H03K5/00
CPC分类号： H03K5/1254 , H03K3/284
摘要： A set-reset trigger circuit for a bistable multivibrator is provided in which a pair of electrical charging circuits are manually coupleable across a source of electric power in a mutually reverse order with respect to their individual elements to immediately thereby produce a set pulse at an output of one of the charging circuits and to subsequently thereby produce a reset pulse at an output of the other charging circuit.
摘要翻译： 提供了一种用于双稳态多谐振荡器的置位复位触发电路，其中一对充电电路可以相对于它们各自的元件以相互相反的顺序在电源上手动耦合，从而在输出端产生设定脉冲 的一个充电电路，随后在另一个充电电路的输出端产生复位脉冲。
-
公开(公告)号：US3713145A
公开(公告)日：1973-01-23
申请号：US3713145D
申请日：1970-11-09
申请人： MOTOROLA INC
发明人： BUTLER T , PFLUGFELDER R
IPC分类号： G01R29/027 , G01S13/76 , G01S9/56 , H03K3/284
CPC分类号： G01R29/0273 , G01S13/76
摘要： A radar transponder is disclosed which discriminates between the lengths of the pulses received and retransmits a pulse of one length upon receipt of a pulse of a short time duration and retransmits a pulse of a greater length upon receipt of a pulse of a longer time duration. The discriminator sets an output monostable multivibrator to produce the long pulse upon receipt of the long interrogation pulse and the output monostable multivibrator is then triggered by a delayed pulse that is responsive to the received pulse.
摘要翻译： 公开了一种雷达转发器，其识别接收到的脉冲的长度，并且在接收到短时间持续时间的脉冲时重新发送一个长度的脉冲，并且在接收到较长持续时间的脉冲时重新发送更长的脉冲。 鉴频器设置输出单稳态多谐振荡器以在接收到长询问脉冲时产生长脉冲，然后由响应于接收脉冲的延迟脉冲触发输出单稳态多谐振荡器。
-
公开(公告)号：US3681620A
公开(公告)日：1972-08-01
申请号：US3681620D
申请日：1970-04-17
申请人： RHOMEGA SYSTEM INC
发明人： HOGE HENRI H
摘要： A variable frequency pulse generator is employed to control the frequency of a monostable multivibrator which provides drive pulses of a constant pulse width to a D.C. load. Discharge circuits are provided to discharge a capacitor in the pulse generator during the operation of the multivibrator and to drive down the charge in a multivibrator capacitor at the end of each drive pulse to provide substantially instantaneous recycling.
-
公开(公告)号：US3660690A
公开(公告)日：1972-05-02
申请号：US3660690D
申请日：1970-11-09
申请人： LTV LING ALTEC INC
发明人： THEODORE CHARLES
CPC分类号： H03K3/72 , H03K3/2823 , H03K3/284
摘要： An auxiliary circuit for adjusting the time-constant of electrical apparatus, such as that of a relaxation oscillator having resistor-capacitor time-constant circuit elements. The adjustment is maintained while an electrical adjusting signal is present. This biases a transistor into conduction and places a second resistor in parallel with the basic resistor of the timeconstant circuit, thereby reducing the time-constant. Alternate embodiments selectively allow plural adjustments, also adjustment of plural separate electrical devices.
摘要翻译： 一种用于调节诸如具有电阻器 - 电容器时间常数电路元件的张弛振荡器的电气设备的时间常数的辅助电路。 当存在电调节信号时，保持调节。 这将晶体管偏置为导通，并将第二电阻器与时间常数电路的基本电阻并联，从而减小时间常数。 替代实施例选择性地允许多个调节，还可以调整多个单独的电气设备。
-
公开(公告)号：US3646370A
公开(公告)日：1972-02-29
申请号：US3646370D
申请日：1970-07-06
申请人： HONEYWELL INC
发明人： LOWE PETER ROBERT
摘要： A transistor (FIG. 1) or an integrating amplifier (FIG. 2), controlled by a signal representing the duty cycle of a one-shot, controls the value of a voltage at one end of a resistor, the other end of which is connected to the one-shot timing capacitor. The charging current for this capacitor flows through this resistor during the excited periods of the one-shot, with a value dependent upon that of the voltage at the first-mentioned resistor end. The transistor or amplifier controls the value of this voltage as required to make the sum of the lengths of the excited periods over an extended period be a fixed percentage of the length of the extended period, and hence to make the average duty cycle constant at a desired value.
摘要翻译： 由表示单次占空比的信号控制的晶体管（图1）或积分放大器（图2）控制电阻器一端的电压值，其另一端为 连接到单稳定时电容器。 该电容器的充电电流在单触发的激励周期期间流过该电阻器，其值取决于第一个提到的电阻器端的电压值。 晶体管或放大器根据需要控制该电压的值，以使得在延长的周期内的激发周期的长度之和成为延长时段的长度的固定百分比，因此使平均占空比恒定在 所需值。
-
-
-
-
-
-
-
-
-
搜索结果
361 条记录 (耗时 0.013 秒)
