公开(公告)号：US4734639A

公开(公告)日：1988-03-29

申请号：US868834

申请日：1986-05-29

申请人： Gary F. Saletta ,  Daniel P. Orange ,  Joseph C. Engel ,  Denis A. Mueller ,  Robert T. Elms

发明人： Gary F. Saletta ,  Daniel P. Orange ,  Joseph C. Engel ,  Denis A. Mueller ,  Robert T. Elms

IPC分类号： G01R19/25 ,  G01R19/00

CPC分类号： G01R19/25

摘要： A master metering module is taught which utilizes a programmed microprocessor and externally operated switches to alert the module as to what kind of system is being monitored thereby. For example, is the system being monitored a .DELTA.-connected electrical system or a Y-connected electrical system. This is useful in providing output indications of line-to-line voltage or line-to-neutral voltage, for example. When measuring voltages whether line-to-line or line-to-neutral one voltage value is substituted from another. A differential amplifier is utilized to do this. In one case the differential amplifier subtracts one line voltage from another line voltage, but in another case it subtracts neutral or zero ground potential from a line voltage. A switching arrangement is provided which interconnects one terminal of the differential amplifier with the neutral input terminal and with a line input terminal through appropriate conditioning of the microprocessor.

摘要翻译： 教授了一种主计量模块，其使用编程的微处理器和外部操作的开关来向模块警告由此监控什么样的系统。 例如，正在监视的系统是DELTA连接的电气系统或Y连接的电气系统。 这在例如提供线对线电压或线对中性电压的输出指示中是有用的。 当测量电压是否从另一个代替线对线或中线一个电压值时。 使用差分放大器来做到这一点。 在一种情况下，差分放大器从另一条线路电压中减去一条线路电压，但在另一种情况下，它会从一条线路电压中减去中性点或零点地电位。 提供了一种开关装置，其通过微处理器的适当调节将差分放大器的一个端子与空载输入端子和线路输入端子相互连接。

公开(公告)号：US4379317A

公开(公告)日：1983-04-05

申请号：US258108

申请日：1981-04-27

申请人： Ernest F. Conroy, Jr. ,  Daniel P. Orange ,  Robert T. Elms

发明人： Ernest F. Conroy, Jr. ,  Daniel P. Orange ,  Robert T. Elms

IPC分类号： H02H3/13

CPC分类号： H02H3/13

摘要： A solid-state load protection system whereby a poly-phase alternating current system is monitored enabling a loss of phase feature to be used. A current sensing function is utilized so as to produce an output signal which is related to the current in an electrical circuit. Attached to the current sensing function are two capacitors each having their own signal path so as to have different charging and discharging rates. During a loss of phase condition, one capacitor discharges more quickly than the remaining capacitor with the result that the voltage across the quickly discharging capacitor, which during normal conditions is greater than the remaining capacitor, now becomes less than the remaining capacitor. A loss of phase sensing function detects this difference in potential levels thereby initiating a trip signal to the output function. The output function upon receiving a trip signal causes a light-emitting diode to conduct and also deenergizes a contactor through which a current source is connected to the load.

摘要翻译： 一种固态负载保护系统，其中监视多相交流电系统，使得能够使用相位特性的损失。 利用电流感测功能来产生与电路中的电流相关的输出信号。 连接到电流感测功能的是两个电容器，每个具有它们自己的信号路径，以便具有不同的充电和放电速率。 在相位条件的损失期间，一个电容器比剩余的电容器放电更快，结果是在正常状态下大于剩余电容器的快速放电电容器两端的电压现在变得小于剩余的电容器。 相位感测功能的损失检测电位电平的这种差异，从而启动到输出功能的跳闸信号。 在接收到跳闸信号时的输出功能使得发光二极管导通并且断开电流源连接到负载的接触器。

公开(公告)号：US5684427A

公开(公告)日：1997-11-04

申请号：US588060

申请日：1996-01-19

申请人： Robert J. Stoddard ,  Daniel P. Orange, II ,  Roger C. Peppiette

发明人： Robert J. Stoddard ,  Daniel P. Orange, II ,  Roger C. Peppiette

IPC分类号： H03K17/06 ,  H03K17/615

CPC分类号： H03K17/06 ,  H03K17/615

摘要： A bipolar driver circuit includes a primary driver transistor and an independently controlled pre-driver transistor having an emitter connected to the base of the primary driver transistor and a collector connected to the collector of the primary driver transistor. In one embodiment, the collector of the primary driver transistor is connected to the output terminal of the driver circuit for sinking current from a load and, in another embodiment, the emitter of the primary driver transistor is connected to the output terminal of the driver circuit for sourcing current to a load. A first current source is connected to the base of the primary driver transistor and a second current source is connected to the base of the pre-driver transistor. The current sources are commonly controllable by an input signal. Also provided is an inverse conduction prevention circuit for preventing the pre-driver transistor from diverting base current from the primary driver transistor in the sink driver embodiment.

摘要翻译： 双极驱动器电路包括主驱动器晶体管和独立控制的预驱动器晶体管，其具有连接到初级驱动晶体管的基极的发射极和连接到主驱动晶体管的集电极的集电极。 在一个实施例中，主驱动晶体管的集电极连接到用于从负载吸收电流的驱动电路的输出端，而在另一个实施例中，主驱动晶体管的发射极连接到驱动电路的输出端 用于将电流提取到负载。 第一电流源连接到主驱动晶体管的基极，第二电流源连接到预驱动晶体管的基极。 电流源通常由输入信号控制。 还提供了一种用于在宿驱动器实施例中防止预驱动晶体管转移基极电流从初级驱动晶体管的逆导通防止电路。