公开(公告)号：US3999077A

公开(公告)日：1976-12-21

申请号：US584919

申请日：1975-06-09

申请人： Henry S. Borkovitz ,  Christopher P. Nystrom ,  Robert P. Stirniman

发明人： Henry S. Borkovitz ,  Christopher P. Nystrom ,  Robert P. Stirniman

IPC分类号： H02J9/06 ,  H02J7/00

CPC分类号： H02J9/062 ,  Y10T307/625

摘要： A constant voltage, constant frequency, uninterruptible a.c. power supply having a line voltage regulator, a rectifier-inverter with an emergency battery power supply and a transfer switch for selectively connecting the line voltage regulator and rectifier-inverter to a load. Under normal conditions, the line voltage regulator and rectifier inverter derive their operating power from the power line and are both connected to the load. If the fault detection system detects a power line fault, it causes the transfer switch to disconnect the line voltage regulator from the load and the rectifier-inverter supplies power to the load from the emergency battery power supply. If the fault detection system detects a rectifier-inverter fault, it causes the transfer switch to disconnect the rectifier-inverter from the load. A synchronization control system regulates the phase of the rectifier-inverter.

摘要翻译： 恒定电压，恒定频率，不间断电流 具有线路稳压器的电源，具有紧急电池电源的整流逆变器和用于选择性地将线路稳压器和整流逆变器连接到负载的转换开关。 在正常情况下，线路稳压器和整流逆变器从电源线导出其工作电源，并且都连接到负载。 如果故障检测系统检测到电源线路故障，则转换开关断开线路电压调节器与负载的连接，整流变频器向紧急电池电源的负载供电。 如果故障检测系统检测到整流逆变器故障，则会导致转换开关断开整流逆变器与负载的连接。 同步控制系统调节整流逆变器的相位。

公开(公告)号：US4246633A

公开(公告)日：1981-01-20

申请号：US10668

申请日：1979-02-09

申请人： Henry S. Borkovitz

发明人： Henry S. Borkovitz

IPC分类号： H02J9/06 ,  H02P13/20 ,  H02M5/44

CPC分类号： H02J9/062 ,  Y10T307/625

摘要： A voltage control circuit for an uninterruptible power supply (UPS), said UPS involving a controlled rectifier operating from an input AC line to charge batteries and to hold them at a constant voltage; the batteries supply power to an inverter which in turn produces an AC output, such output being uniquely controlled by efficiently and accurately compensating for any fluctuations due to battery voltage changes or to load changes.

摘要翻译： 一种用于不间断电源（UPS）的电压控制电路，所述UPS涉及从输入AC线路操作以对电池充电并将其保持在恒定电压的受控整流器; 电池为变频器供电，而逆变器又产生一个交流输出，这种输出通过有效和准确地补偿由于电池电压变化或负载变化引起的任何波动来独特地控制。

公开(公告)号：US4993161A

公开(公告)日：1991-02-19

申请号：US461067

申请日：1990-01-04

申请人： Henry S. Borkovitz

发明人： Henry S. Borkovitz

IPC分类号： G01C15/00

CPC分类号： G01C15/004 ,  Y10S33/21

摘要： The laser beam level instrument includes a laser diode mounted on a pendulous platform suspended from a frame by gold plated Mylar strips which also serve as conductors for supplying power to the diode. The strips are mounted with a 180 degree twist to overcome resistance to flexing/bending so that the platform moves freely under the influence of gravity to provide automatic self-leveling. The diode operates on low d.c. voltage but if d.c. is applied to the strips the magnetic field around the Mylar strips will have sufficient force relative to the geomagnetic field to interfere with free pendulation. So 4.5 volts d.c. is stepped up and inverted to about 20 volts a.c. to avoid interference with the geomagnetic field and to reduce power loss across the gold plated strips. The a.c. voltage is then stepped down and converted back to d.c. voltage (2-3 volts) on the platform to power the diode. A vertical laser beam emitted from the diode is adjusted by an optical flat and collimated by an adjustable focal length lens which is adjusted to account for the manufacturing variances in the length of the strips. The vertical beam is then deflected 90 degrees by a prism, and rotated through a horizontal plane to provide a precise leveling reference.

摘要翻译： 激光束电平仪器包括安装在由金镀Mylar带悬挂在框架上的下摆平台上的激光二极管，其也用作向二极管供电的导体。 条带以180度扭转安装以克服弯曲/弯曲的阻力，使得平台在重力的作用下自由移动以提供自动自动调平。 二极管工作在低直流电压。 电压，但如果直流 施加到条带上，聚酯薄膜条周围的磁场将具有相对于地磁场的足够的力以干扰自由弯曲。 所以4.5伏直流 被加强并倒转到约20伏特a.c. 以避免对地磁场的干扰，并减少穿过镀金条的功率损耗。 a.c. 电压然后降低并转换回直流。 电压（2-3伏）在平台上为二极管供电。 从二极管发射的垂直激光束通过光学平面调节并且由可调整的焦距透镜准直，该透镜被调节以考虑条的长度的制造方差。 然后垂直光束通过棱镜偏转90度，并且通过水平面旋转以提供精确的调平参考。

公开(公告)号：US3971007A

公开(公告)日：1976-07-20

申请号：US562767

申请日：1975-03-27

申请人： Henry S. Borkovitz ,  Wesley G. Peterson

发明人： Henry S. Borkovitz ,  Wesley G. Peterson

IPC分类号： G01R19/165 ,  G01R27/18 ,  G01R31/08 ,  G08B21/00

CPC分类号： G01R31/085 ,  G01R19/16571 ,  G01R27/18

摘要： A line isolation monitor for detecting faults of lines isolated from ground in which a constant current generator generates an electrical signal having one or more frequencies near the power line frequency and applies the electrical signal to the power lines. A signal sensor detects the generated electrical signal on the power line and a discriminator determines the effect of the phase angle of the impedance from each of the power lines conductors to ground and the effect of the relative magnitudes of each of the conductors impedance to ground to detect a fault. A threshold circuit generates an alarm signal if the current flow is above a predetermined level, to energize audible and visible alarms.

摘要翻译： 线路隔离监视器，用于检测与地离开的线路的故障，其中恒定电流发生器产生具有靠近电力线频率的一个或多个频率的电信号，并将电信号施加到电力线。 信号传感器检测电力线上产生的电信号，并且鉴别器确定来自每个电力线导体对地的阻抗的相位角的影响以及每个导体的接地阻抗对地的相对幅度的影响 检测故障。 如果电流超过预定电平，阈值电路产生报警信号，以激励可听见的和可见的报警。

公开(公告)号：US3938033A

公开(公告)日：1976-02-10

申请号：US472182

申请日：1974-05-22

申请人： Henry S. Borkovitz ,  William E. Lucarz

发明人： Henry S. Borkovitz ,  William E. Lucarz

IPC分类号： G05F3/06

CPC分类号： G05F3/06

摘要： An electrical system wherein an electrical condition such as voltage is regulated by means of a static regulator of the ferroresonant type, including a high reactance transformer and wherein the regulator is particularly stable during start-up and under transient conditions by use of a clipping ballast load.

摘要翻译： 一种电气系统，其中诸如电压的电气条件通过铁磁谐振型的静电调节器进行调节，包括高电抗变压器，并且其中调节器在启动期间和在瞬态条件下通过使用夹紧镇流器负载特别稳定 。