公开(公告)号：US4415943A

公开(公告)日：1983-11-15

申请号：US370337

申请日：1982-04-21

申请人： Donald W. Wortman

发明人： Donald W. Wortman

IPC分类号： H02H7/08 ,  H02H3/13 ,  H02H7/09

CPC分类号： H02H7/08 ,  Y10T307/951 ,  Y10T307/957

摘要： An equipment protector and energy saving apparatus includes transient protection as well as under voltage protection by preventing the reduced voltage from being applied to motors and other apparatuses that may be damaged because of insufficient voltage being applied thereto. Provision is incorporated to protect for momentary low voltage transients and turn-on prevention, if the line voltage should be reduced below a predetermined value. Provision is also made for correcting for a small increase in line voltage which may occur when the operating equipment is removed from the line. A timing device may be incorporated therein in order to remove the protected equipment from the line for predetermined intervals of time.

摘要翻译： 一种设备保护器和节能装置，包括通过防止降低的电压施加到由于施加不足的电压而可能损坏的电动机和其他装置的瞬时保护和欠电压保护。 如果线路电压应降低到预定值以下，则可以配置保护瞬时低电压瞬变和开启防护措施。 还提供了修正当操作设备从线路上移除时可能发生的线路电压的小的增加。 可以在其中并入定时装置，以便在预定的时间间隔内将受保护的设备从线路中移除。

公开(公告)号：US4392225A

公开(公告)日：1983-07-05

申请号：US234725

申请日：1981-02-17

申请人： Donald W. Wortman

发明人： Donald W. Wortman

IPC分类号： H04J1/10

CPC分类号： H04J1/10

摘要： A signal-amplifying telephone carrier repeater which is automatically self-adjusting for both cable length and cable gauge in a plural channel, frequency division multiplexed, amplitude modulated carrier system. Also disclosed herein is a subscriber power supply which delivers sufficient power to the subscriber terminal load despite variations in load current due to changes in the number of channels in the carrier system. The power supply also has a back-up unit which operates to deliver power to the load in the event that a fault occurs in the primary supply.

摘要翻译： 一种信号放大电话载体中继器，其在多信道，频分复用的幅度调制载波系统中对电缆长度和电缆计量器自动进行自调整。 这里还公开了一种用户电源，尽管由于载波系统中的信道数量的改变而导致负载电流的变化，但是向用户终端负载提供足够的功率。 电源还具有一个备用单元，用于在主电源发生故障的情况下向负载供电。

公开(公告)号：US4663580A

公开(公告)日：1987-05-05

申请号：US817323

申请日：1986-01-09

申请人： Donald W. Wortman

发明人： Donald W. Wortman

IPC分类号： H02J7/10 ,  H02J7/00 ,  H02J7/04

CPC分类号： H02J7/008 ,  H02J7/0091 ,  Y10S323/907

摘要： A power supply is provided with a predetermined nonlinear temperature coefficient for float charging sealed lead-acid batteries and providing power to a load. A temperature compensation network in the power supply provides the predetermined nonlinear temperature coefficient by using a linear temperature coefficient element (forward biased silicon diode) and a nonlinear temperature coefficient element (thermistor) in combination. Additionally, an over-voltage protection circuit, to disable the power supply should the output voltage exceed a predetermined value, is disclosed having a second temperature compensation network to compensate for the output voltage variation with temperature of the power supply.

摘要翻译： 为电源提供预定的非线性温度系数，用于浮充电密封铅酸蓄电池并为负载提供电力。 电源中的温度补偿网络通过组合使用线性温度系数元件（正向偏置硅二极管）和非线性温度系数元件（热敏电阻）来提供预定的非线性温度系数。 另外，过压保护电路，如果输出电压超过预定值，则禁止电源，具有第二温度补偿网络，以补偿随着电源温度的输出电压变化。

公开(公告)号：US4433215A

公开(公告)日：1984-02-21

申请号：US282056

申请日：1981-07-10

申请人： Donald W. Wortman

发明人： Donald W. Wortman

IPC分类号： H04B1/58

CPC分类号： H04B1/58 ,  H04B3/03

摘要： An electronic hybrid having a two-wire port adapted to be connected to a two-wire line and separate unidirectional receive and transmit ports, means for coupling signals received at said two-wire port to said transmit port, and a circuit for converting single-end signals imposed on the receive port into differential signals for application to the two-wire port.

摘要翻译： 一种具有适于连接到双线线路和单独的单向接收和发送端口的双线端口的电子混合器，用于将在所述两线端口接收的信号耦合到所述发送端口的装置， 将接收端口施加到差分信号上的终端信号应用于双线端口。

公开(公告)号：US5138658A

公开(公告)日：1992-08-11

申请号：US794818

申请日：1991-11-18

申请人： Dan K. Carter ,  Donald W. Wortman

发明人： Dan K. Carter ,  Donald W. Wortman

IPC分类号： H04M19/08 ,  H04M19/00 ,  H04Q3/42

CPC分类号： H04M19/003 ,  H04M19/008

摘要： A subscriber line interface circuit that provides regulated current to telephone subscribers in an improved manner reducing the amount of power required to operate while maintaining a constant current source. The current to the telephone subscribers flows through a switching transistor, an inductive storage element, sensing resistors and a transformer. The desired operating characteristic is obtained by cycling the switching transistor. The switching transistor is cycled on at a preset interval causing the telephone subscriber current to flow from the switching transistor. The switching transistor is cycled off in response to an increase in the telephone subscriber current as sensed by the sensing resistors thereby causing the current to flow from the inductive storage element.

摘要翻译： 用户线路接口电路（32）通过在维持恒定电流源的同时减少操作所需的功率量，以改进的方式向电话用户（14）提供调节电流。 到电话用户（14）的电流流过开关晶体管（图3中的92）和感应存储元件（98，图3），感测电阻器（54,56）和混合变压器（38）。 期望的工作特性是通过循环开关晶体管（92）获得的。 开关晶体管（92）以预设间隔循环，导致电话用户电流从开关晶体管流出。 响应于由感测电阻器（54,56）感测到的电话用户电流的增加，开关晶体管被循环，从而使电流从感应存储元件（38）流出。 耦合到感测电阻器（54,56）的电流传感器（60）向包括晶体管（92）2和感应存储元件（38）的开关模式电流源（52）提供电流电平信号SUMSIG。 通过由SUMSIG信号控制的源极（80）提供的调节的相对电流来防止变压器（38）的饱和。

公开(公告)号：US4600875A

公开(公告)日：1986-07-15

申请号：US493349

申请日：1983-05-10

申请人： Donald W. Wortman

发明人： Donald W. Wortman

IPC分类号： H04J1/10 ,  G05F5/00 ,  H02J7/00

CPC分类号： H04J1/10 ,  Y10T307/62

摘要： A subscriber power supply which delivers sufficient power to a subscriber terminal load despite variations in load current due to changes in the number of channels in a telephone carrier system. The power supply also has a back-up unit which operates to deliver power to the load in the event that a fault occurs in the primary supply.

摘要翻译： 尽管由于电话载体系统中的信道数量的改变而导致负载电流的变化，用户电源向用户终端负载提供足够的功率。 电源还具有一个备用单元，用于在主电源发生故障的情况下向负载供电。

公开(公告)号：US4459433A

公开(公告)日：1984-07-10

申请号：US410500

申请日：1982-08-23

申请人： Donald W. Wortman

发明人： Donald W. Wortman

IPC分类号： H04Q5/24 ,  H04M13/00

CPC分类号： H04Q5/24

摘要： A universal station identification circuit arrangement for use with central office equipment that utilizes either differential or longitudinal detection methods is adapted to be connected to the tip party's subscriber drop in a two-party line without requiring access to or rewiring of the tip party's telephone. The circuit arrangement may be fabricated in a single unit which may include a ringer isolator together with ANI mark circuits.

摘要翻译： 与使用差分或纵向检测方法的中心局设备一起使用的通用站识别电路装置适于在双方线路中连接到提示方的用户线路，而不需要访问或重新布线提示方的电话。 电路装置可以制造成单个单元，其可以包括与ANI标记电路一起的振铃隔离器。

公开(公告)号：US4278847A

公开(公告)日：1981-07-14

申请号：US15407

申请日：1979-02-26

申请人： Donald W. Wortman

发明人： Donald W. Wortman

IPC分类号： H04B1/58

CPC分类号： H04B1/586

摘要： An electronic hybrid for coupling a two-wire line to a four-wire line and having a two-wire port adapted to be connected to the two-wire line, separate receive and transmit ports adapted to be connected to said four-wire line, means for coupling signals received at said two-wire port to said tramsmit port, and a circuit connected to said receive and two-wire ports and including a pair of constant current sources for driving the two-wire line that is connected to said two-wire port in response to a signal imposed on said receive port.

摘要翻译： 一种用于将双线线耦合到四线线路并具有适于连接到双线线路的双线端口，适于连接到所述四线线路的分离的接收和发送端口的电子混合器， 用于将在所述双线端口处接收的信号耦合到所述轨道通道端口的装置，以及连接到所述接收和双线端口并包括一对恒流源的电路，用于驱动连接到所述两线端口的双线线路， 响应于施加在所述接收端口上的信号的线端口。