公开(公告)号：US4180773A

公开(公告)日：1979-12-25

申请号：US800612

申请日：1977-05-26

申请人： Monley M. Y. Shiao ,  George Spector

发明人： Monley M. Y. Shiao ,  George Spector

IPC分类号： G01R19/155 ,  G01R29/18 ,  G01R25/00 ,  G01R19/16

CPC分类号： G01R29/18 ,  G01R19/155

摘要： An electronic circuit breaker (low voltage) device having three lead wires connected to the line side of the device, and four lead wires connected to two lamps, each of which is connected by two of the last said wires, the device being fitted into a small case and serving to test the voltage of electrical circuits.

摘要翻译： 一种电子断路器（低电压）装置，具有连接到装置的线路侧的三根引线，以及连接到两个灯的四根引线，每个引线通过最后一根所述的导线连接，该装置装配成 小案件，用于测试电路电压。

公开(公告)号：US4145651A

公开(公告)日：1979-03-20

申请号：US809232

申请日：1977-06-23

申请人： Allen E. Ripingill, Jr.

发明人： Allen E. Ripingill, Jr.

IPC分类号： G01R19/165 ,  G01R31/02 ,  G01R19/16

CPC分类号： G01R19/16557

摘要： A probe for developing a visual indication of the electrical state of a selected point in a digital circuit under test. The probe is provided with two clips for attaching to the power supply and the ground of the circuit to be tested. The operator then holds a sharp tip of the probe at the selected point at which the electrical condition of the circuit is to be tested. Two light emitting diodes visible on the probe body display which one of the six possible circuit conditions exist at the selected point, such as open circuit, positive-going pulse, negative steady-state and so forth. The circuit utilizes integrated circuit NOR and inverting buffer components. Pulses as short as ten nanoseconds may be detected. The probe may be used with any voltage range of the various logic circuit families.

摘要翻译： 用于开发被测数字电路中选定点的电气状态的视觉指示的探针。 探头设有两个夹子，用于连接到电源和被测电路的地面。 然后操作人员在探测电路的电气条件的选定点保持探头的锋利尖端。 在探头主体上可见的两个发光二极管显示选择点存在六个可能的电路条件中的哪一个，例如开路，正向脉冲，负稳态等。 该电路采用集成电路NOR和反相缓冲器组件。 可以检测到短至十纳秒的脉冲。 探头可以用于各种逻辑电路系列的任何电压范围。

公开(公告)号：US4144492A

公开(公告)日：1979-03-13

申请号：US844431

申请日：1977-10-21

申请人： Gero Zschimmer

发明人： Gero Zschimmer

IPC分类号： G01R19/255 ,  H03M1/00 ,  G01R19/16 ,  H03K5/20

CPC分类号： G01R19/255 ,  H03M1/52

摘要： The invention provides a method of measuring a voltage with the aid of an analogue-digital converter comprising an integrator and a comparator, in which a first voltage maintaining the integrator on a certain reference potential, a second voltage, bringing the output of the integrator to a certain potential, and a third voltage, discharging the voltage at the output of the integrator are applied to the converter. In this method for measuring instantaneous values of measurement voltages, the first voltage is the measurement voltage and the second voltage is the auxiliary voltage.

摘要翻译： 本发明提供了一种借助于包括积分器和比较器的模拟数字转换器来测量电压的方法，其中将积分器保持在特定参考电位的第一电压，第二电压，使积分器的输出为 将一定电位和在积分器的输出端施加电压的第三电压施加到转换器。 在这种测量测量电压的瞬时值的方法中，第一电压是测量电压，第二电压是辅助电压。

公开(公告)号：US4114089A

公开(公告)日：1978-09-12

申请号：US751588

申请日：1976-12-17

申请人： Adel Abdel Aziz Ahmed

发明人： Adel Abdel Aziz Ahmed

IPC分类号： G01R19/165 ,  G01R27/18 ,  H02H3/33 ,  G01R31/02 ,  G01R19/16 ,  H02H1/04

CPC分类号： G01R19/16571 ,  G01R27/18 ,  H02H3/337

摘要： Ground fault detection apparatus improved to include detector circuiry for providing an output current responsive to imbalance in the alternating currents flowing to and from a load only if it be of sustained character and of sufficient amplitude. The detector circuitry discriminates against responses to imbalance current primarily consisting of infrequent short-duration high-amplitude spikes characteristic of transient disturbances in favor of responses primarily consisting of the sustained, relatively long-duration rectified sinusoidal waveforms characteristic of ground fault conditions, even where the average level of the transient disturbance component of the imbalance current is equal to or in excess of the average level of ground fault component.

公开(公告)号：US4105966A

公开(公告)日：1978-08-08

申请号：US782482

申请日：1977-03-29

申请人： Carl L. Lennon ,  Thomas O. Britt

发明人： Carl L. Lennon ,  Thomas O. Britt

IPC分类号： G01R13/06 ,  G01R15/18 ,  G01R13/04 ,  G01R19/16

CPC分类号： G01R15/18 ,  G01R13/06

摘要： An apparatus for monitoring, analyzing and accurately determining the value of peak current, the peak rate of change in current with respect to time and the rise time of the electrical currents generated in an electrical conductive mast that is located in the vicinity where lightning is to be monitored. The apparatus includes an electrical coil for sensing the change in current flowing through the mast and generating a voltage responsive thereto. An on-site recorder and a recorder control system records the voltages produced responsive to lightning strikes and converts the voltage to digital signals for being transmitted back to the remote command station responsive to command signals. The recorder and the recorder control system are carried within an RFI proof environmental housing into which the command signals are fed by means of a fiber optic cable so as to minimize electrical interference.

摘要翻译： 一种用于监测，分析和精确地确定峰值电流值，电流相对于时间的峰值变化速率和在闪电附近的导电桅杆中产生的电流的上升时间的装置 被监视。 该装置包括用于感测流过桅杆的电流变化并产生响应于其的电压的电线圈。 现场记录器和记录器控制系统记录响应于雷击产生的电压，并将电压转换成数字信号，以响应命令信号传送回远程命令站。 记录器和记录器控制系统在RFI证明环境外壳内承载，通过光纤电缆将命令信号馈送到其中，以便最小化电气干扰。

公开(公告)号：US4086531A

公开(公告)日：1978-04-25

申请号：US680484

申请日：1976-04-26

申请人： Donald R. Bernier

发明人： Donald R. Bernier

IPC分类号： G01R31/00 ,  G01R31/34 ,  G01R31/02 ,  G01R19/16

CPC分类号： G01R31/006 ,  G01R31/343

摘要： An alternator-battery electrical system test apparatus which, in one modification, includes a four stage voltage level sensing system, each stage being operative in response to a particular condition of the electrical system under test. The first stage senses the filtered and unfiltered output of the alternator to provide a pulsed output which provides an indication of any diode failure or winding failure in the alternator. The remaining three stages sense the voltage output from the alternator as compared to a fixed reference, each particular voltage condition providing an indication of a preselected electrical condition within the circuit. The entire system is calibrated by a single calibrating resistor. The second modification of the system provides two outputs, one output indicating a regular defect and a diode condition indicator and the other indicator providing an indication of no defects in the system if conducting alone, or an alternator defect if conducting simultaneously with the above mentioned one output. The circuit is substantially identical to the first modification, with certain elements eliminated.

摘要翻译： 一种交流发电机电池电气系统测试装置，其在一个修改中包括四级电压电平感测系统，每个级都响应于被测电气系统的特定条件而工作。 第一级感测交流发电机的滤波和未滤波的输出，以提供脉冲输出，其提供交流发电机中任何二极管故障或绕组故障的指示。 与固定参考相比，剩余的三个级感测来自交流发电机的电压输出，每个特定电压条件提供电路内预选电气状态的指示。 整个系统由单个校准电阻校准。 系统的第二修改提供两个输出，一个输出指示常规缺陷和二极管条件指示器，另一个指示器提供系统中没有缺陷的指示，如果单独进行，或交流发电机缺陷如果与上述一个同时进行 输出。 该电路与第一修改基本相同，消除了某些元素。

公开(公告)号：US4082995A

公开(公告)日：1978-04-04

申请号：US672204

申请日：1976-03-31

申请人： John M. Rhude

发明人： John M. Rhude

IPC分类号： G01R19/145 ,  G01R31/02 ,  G01R19/16

CPC分类号： G01R19/145

摘要： An electrical circuit tester having hot, neutral and ground terminals adapted for connection to the hot, neutral and ground contacts, respectively, of a household electrical receptacle is provided with three glow lamps and three resistors connected in series with the glow lamps, each series combination of a glow lamp and a resistor being connected between a different pair of the terminals. Each glow lamp is shunted by an associated shunt resistor, the shunt resistor serving to lower the voltage across the glow lamp when full line voltage is impressed across a series combination of that glow lamp and any one other glow lamp.

公开(公告)号：US4052665A

公开(公告)日：1977-10-04

申请号：US672257

申请日：1976-03-30

申请人： Clifford F. Gruenwald

发明人： Clifford F. Gruenwald

IPC分类号： F02P17/00 ,  F02P17/12 ,  G01R15/16 ,  G01R19/155 ,  G01R31/12 ,  G01R19/16 ,  G01R31/02

CPC分类号： F02P17/12 ,  G01R15/16 ,  G01R19/155 ,  F02P2017/006

摘要： A capacitive pickup device for deriving a measurable voltage which is a linear function of the magnitude of pulsating high voltage of the order of 15 to 40 kilovolts in an insulated conductor, the pickup device having a pair of electrically conducting plate members connected together electrically to form one plate element of a capacitor, the conductor itself forming the other plate element of the capacitor and the conductor insulation forming the dielectric. The pickup device also includes a pair of electrically conducting plates respectively carried in spaced relation with the plate members, the plates being centrally relieved to accommodate the plate members and adapted to be connected to ground. An indicating and protective gaseous conduction lamp is electrically connected between the plate members and plates, and a capacitor and a resistor are connected in parallel across the lamp to form an output circuit for connection to apparatus for indicating in linear manner the magnitude of the high voltage in the conductor. The plate members and plates are relatively movable so they selectively may open and close for receiving a portion of the insulated conductor without requiring conductor disconnection.

公开(公告)号：US4052664A

公开(公告)日：1977-10-04

申请号：US686060

申请日：1976-05-13

申请人： Leonard Buster Pohl

发明人： Leonard Buster Pohl

IPC分类号： G01R19/145 ,  G01R31/02 ,  G01R19/16

CPC分类号： G01R19/145 ,  G01R31/024

摘要： An assembly of components for monitoring an electrical circuit, and which truly indicates whether the circuit is working; the assembly including a voltage transformer in series with a minimum resistance load, a secondary winding of the transformer communicating with a full wave bridge rectifier connected through a gate, cathode, silicon controlled rectifier and silicon rectifier diode to a pilot lamp.

公开(公告)号：US4044304A

公开(公告)日：1977-08-23

申请号：US657277

申请日：1976-02-11

申请人： Ichiro Hamaguchi ,  Kenji Toyoda

发明人： Ichiro Hamaguchi ,  Kenji Toyoda

IPC分类号： G01R19/155 ,  G01R19/165 ,  G01R31/36 ,  G01R19/16 ,  G01N27/46

CPC分类号： G01R19/16542 ,  G01R19/155 ,  G01R19/16538

摘要： A device for testing the voltage of a voltage source comprises a bridge circuit, a differential switching circuit and an indicator element. The bridge circuit includes a first circuit comprising a first resistor; a second circuit comprising first diode means connected to the first circuit; a third circuit comprising a second resistor connected to the first circuit, the junction between the third and first circuits being connected to one terminal of the voltage source; and a fourth circuit comprising a serial connection of second diode means and a third resistor. One end of the fourth circuit is connected to the third circuit and the other end is connected to the second circuit. The junction between the fourth and second circuits is connected to the other terminal of the voltage source. The third resistor has a resistance value sufficiently great so that the differential voltage between the junction between the first and second circuits and the junction between the third and fourth circuits depends on the source voltage. The differential switching circuit is adapted to change its condition in accordance with the differential voltage between the junction between the first and second circuits and the junction between the third and fourth circuits. The switching circuit has a terminal for outputting the condition thereof. The indicator element is connected to the output terminal to indicate the condition of the differential switching circuit.

摘要翻译： 用于测试电压源的电压的装置包括桥接电路，差分开关电路和指示器元件。 桥电路包括第一电路，其包括第一电阻器; 第二电路，包括连接到第一电路的第一二极管装置; 第三电路，包括连接到第一电路的第二电阻器，第三和第一电路之间的连接点连接到电压源的一个端子; 以及包括第二二极管装置和第三电阻器的串联连接的第四电路。 第四电路的一端连接到第三电路，另一端连接到第二电路。 第四和第二电路之间的连接点连接到电压源的另一个端子。 第三电阻器的电阻值足够大，使得第一和第二电路之间的接合点与第三和第四电路之间的接合点之间的差分电压取决于源极电压。 差分开关电路适于根据第一和第二电路之间的接合点与第三和第四电路之间的接合点之间的差分电压来改变其状态。 开关电路具有用于输出其状态的端子。 指示器元件连接到输出端子以指示差分开关电路的状态。