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    • 1. 发明申请
    • COMMUNICATIONS CHANNEL TESTING ARRANGEMENT
    • 通信通道测试安排
    • WO1994011948A1
    • 1994-05-26
    • PCT/GB1993002312
    • 1993-11-10
    • RAYCHEM LIMITEDPRYOR, Dennis, MalcolmCHALLIS, MichaelVAN LEEUW, Luc
    • RAYCHEM LIMITED
    • H03K17/687
    • H04M3/301H03K17/6874H04M2201/14
    • A switching arrangement that can be connected in a communications channel that comprises a pair of lines between sets of terminal equipment, which comprises: (i) a series switch (1, 2) for connection in each of the lines; (ii) a shunt switch for connection between the lines; and (iii) a control circuit (5) that can actuate the series switches (1, 2) and can actuate the shunt switch on receipt of a signal sent along the channel: wherein the control circuit (5) can actuate the shunt switch and the series switches (1, 2) on receipt of one or more signals but the shunt switch will remain closed over a different time period than that during which the series switches remain open, in order to allow different tests to be performed on the channel, and wherein one or more of the switches comprises a solid state switch.
    • 一种可以连接在包括终端设备组之间的一对线路的通信信道中的交换装置,其包括:(i)用于在每条线路中连接的串联开关(1,2) (ii)用于线路之间连接的分流开关; 和(iii)可以致动串联开关(1,2)并且可以在接收到沿着通道发送的信号时致动并联开关的控制电路(5):其中控制电路(5)可以致动分流开关和 在接收到一个或多个信号但是分流开关的串联开关(1,2)将在与串联开关保持断开的不同时间段内保持闭合,以允许在通道上执行不同的测试, 并且其中一个或多个开关包括固态开关。
    • 2. 发明申请
    • SWITCHING ARRANGEMENT FOR A COMMUNICATIONS CHANNEL
    • 交换通道的切换方案
    • WO1994001961A1
    • 1994-01-20
    • PCT/GB1993001376
    • 1993-06-30
    • RAYCHEM LIMITEDPRYOR, Dennis, MalcolmCHALLIS, Michael
    • RAYCHEM LIMITED
    • H04M03/30
    • H04M3/301H02H3/10H02H9/041H04M3/18
    • A switching arrangement that can be connected in a communications channel that comprises a pair of lines, between sets of terminal equipment, which comprises: (i) a d.c. voltage window detector circuit (3) that is connected between the lines and is responsive to the voltage between the lines; and (ii) one or more switching circuits (2, 4) connected in or between the lines that can be actuated by the window detector circuit (3) when, and only when, the voltage between the lines is within a predetermined band; so that the or each switching circuit (2, 4) can be remotely actuated by means of a d.c. signal on the line, the arrangement including a low pass filter associated with the or earch switching circuit having a cut off frequency that is sufficiently low to prevent the switching circuit(s) being actuated by a ringing signal on the channel.
    • 一种切换装置,其可以连接在通信信道中,该通信信道包括终端设备组之间的一对线路,其包括:(i)直流 电压窗检测器电路(3),其连接在线路之间并响应于线路之间的电压; 以及(ii)连接在线路之中或之间的一个或多个切换电路(2,4),当线路之间的电压处于预定频带内时,只有当线路之间的电压在窗口检测器电路(3)内时, 使得该开关电路(2,4)可以通过直流方式远程启动。 信号,该装置包括与具有足够低的截止频率相关联的或离合器切换电路的低通滤波器,以防止开关电路由通道上的振铃信号致动。
    • 3. 发明申请
    • CIRCUIT PROTECTION ARRANGEMENT
    • 电路保护装置
    • WO1993001639A1
    • 1993-01-21
    • PCT/GB1992001237
    • 1992-07-08
    • RAYCHEM LIMITEDPRYOR, Dennis, MalcolmCHALLIS, Michael
    • RAYCHEM LIMITED
    • H02H03/087
    • H02H3/087H02H9/025H03K17/0822H03K17/785
    • An arrangement that is intended to be series connected in a line of an electrical circuit for protecting the circuit from an overcurrent, comprises a depletion mode FET (1) that switches the line current and a control device (4) that is connected across a resistance in the line, preferably the channel resistance of the FET (1), and will bias the gate of the FET (1) in response to the voltage difference across the resistance in order to switch the FET off when the arrangement is subjected to an overcurrent in the line. The arrangement has the advantage that since the FET (1) is normally on, there is no initial voltage drop across the arrangement before it becomes conductive so that the arrangement can be substantially linear.
    • 旨在串联连接在用于保护电路免于过电流的电路线路中的装置包括切换线路电流的耗尽型FET(1)和跨过电阻连接的控制装置(4) 在线路中,优选地是FET(1)的沟道电阻,并且将响应于跨过电阻的电压差而偏压FET(1)的栅极,以便在该布置经受过电流时切断FET 在线 该布置的优点在于,由于FET(1)通常导通,所以在布置变得导通之前,不存在初始的电压降,使得该布置可以是基本上线性的。
    • 5. 发明申请
    • CIRCUIT PROTECTION DEVICE
    • 电路保护装置
    • WO1992010878A1
    • 1992-06-25
    • PCT/GB1991002215
    • 1991-12-12
    • RAYCHEM LIMITEDPRYOR, Dennis, MalcolmCHALLIS, Michael
    • RAYCHEM LIMITED
    • H03K17/08
    • H02H3/087H02H3/07
    • A circuit protection arrangement that is intended to be series connected in a line of an electrical circuit comprises a transistor switch (1) that controls the circuit current and has a control input, and a control arrangement that controls the voltage of the control input of the switch. The control arrangement comprises a comparator circuit (3) that compares a fraction of the voltage across the switch (1) with a reference voltage, for example supplied by a Zener diode or bandgap diode, and opens the switch if the fraction is greater than the reference voltage. The comparator circuit is powered by the voltage drop in the line across the switch so that the arrangement can be formed as a two-terminal device that requires no external power source. The arrangement has the advantage that it exhibits a relatively small variation in performance with respect to temperature variations.
    • 旨在串联连接在电路线路中的电路保护装置包括控制电路电流并具有控制输入的晶体管开关(1),以及控制装置,其控制控制输入的电压 开关。 控制装置包括比较器电路(3),其将开关(1)两端的电压的一部分与参考电压(例如由齐纳二极管或带隙二极管提供)进行比较,并且如果分数大于 参考电压。 比较器电路由开关中的线路中的电压降供电,使得该布置可以形成为不需要外部电源的两端设备。 该装置的优点在于,相对于温度变化,其表现出相对较小的性能变化。
    • 7. 发明申请
    • OVERCURRENT PROTECTION DEVICE
    • 过电流保护装置
    • WO1992012561A1
    • 1992-07-23
    • PCT/GB1992000027
    • 1992-01-07
    • RAYCHEM LIMITEDATKINS, Ian, PaulWILLIAMS, David, ManselPRYOR, Dennis, Malcolm
    • RAYCHEM LIMITED
    • H02H03/08
    • H02H3/087
    • A circuit protection arrangement that is intended to be series connected in a line of the circuit comprises a transistor switch (1) that controls the line current and a control transistor (4) that controls the base or gate voltage of the switching transistor and is responsive to an overcurrent through the switching transistor. The arrangement includes a voltage source, for example a battery (3), a dc-dc converter (58/59) or a Seebeck device (43), applied to the base or gate of the switching transistor which biases the switching transistor into or toward conduction in normal operation. The arrangement enables the initial voltage drop that is required to turn the switching transistor (1) on to be reduced or eliminated while requiring relatively little current from the voltage source. The arrangement can be reset remotely by briefly removing the voltage source or load from the circuit.
    • 旨在串联连接在电路线路中的电路保护装置包括控制线路电流的晶体管开关(1)和控制开关晶体管的基极或栅极电压的控制晶体管(4) 通过开关晶体管的过电流。 该装置包括施加到开关晶体管的基极或栅极的电压源,例如电池(3),dc-dc转换器(58/59)或塞贝克装置(43),其将开关晶体管偏置或 在正常运行中导通。 该装置能够使开关晶体管(1)导通所需的初始电压降降低或消除,同时需要来自电压源的相对较小的电流。 通过短暂地从电路中去除电压源或负载,可以远程重置该装置。
    • 8. 发明申请
    • COMMUNICATION CHANNEL SWITCHING ARRANGEMENT
    • 通信信道切换安排
    • WO1994005108A1
    • 1994-03-03
    • PCT/GB1993001717
    • 1993-08-13
    • RAYCHEM LIMITEDN.V. RAYCHEM S.A.VAN LEEUW, Luc
    • RAYCHEM LIMITEDN.V. RAYCHEM S.A.
    • H04M03/30
    • H04M3/301H04M3/18
    • A switching arrangement that can be connected in a communications channel that comprises a pair of lines, between sets of terminal equipment, which comprises: (i) a line switch (6, 7), that is series connected in each of the lines; and (ii) a control circuit (8) for the line switches comprising: (a) a charge reservoir (9) that is connected between the lines; (b) a reservoir charging switch (10) that is connected in series with the charge reservoir and controls the charging of the reservoir in response to a signal on the line; and (c) a reservoir discharging switch (11) that is controlled by a signal on the line and will allow the reservoir (9) when charged to energise control terminals of the line switches so that the line switches (6, 7) can maintain in an open state for a period of time by discharging of the reservoir.
    • 一种可以连接在通信信道中的切换装置,该通信信道包括终端设备组之间的一对线路,其包括:(i)串行连接在每条线路中的线路交换机(6,7) 以及(ii)用于所述线路开关的控制电路(8),包括:(a)连接在所述线路之间的电荷贮存器(9) (b)储存器充电开关(10),其与充电储存器串联连接,并根据线路上的信号控制储存器的充电; 和(c)由线路上的信号控制的储存器排放开关(11),并且当充电时允许储存器(9)激励线路开关的控制端子,使得线路开关(6,7)能够维持 在开放状态下一段时间通过排放水库。
    • 10. 发明申请
    • OVERCURRENT PROTECTION DEVICE
    • 过电流保护装置
    • WO1992007403A1
    • 1992-04-30
    • PCT/GB1991001761
    • 1991-10-10
    • RAYCHEM LIMITEDPRYOR, DennisCHALLIS, MichaelATKINS, Ian, Paul
    • RAYCHEM LIMITED
    • H02H03/087
    • H02H3/087H02H3/07
    • An overcurrent protection arrangement comprises a switching circuit that is intended to be series connected in a line of the circuit to be protected and which will allow normal circuit currents to pass but will open when subjected to an overcurrent. The arrangement includes a pulse generator which will generate pulses when the switching circuit has opened that reset, or attempt to reset, the switching circuit to its conducting state. Only a predetermined finite number of pulses or pulses for a predetermined finite time are generated, so that the circuit will quickly function again after having been subjected to a current transient but will not continually attempt to reset in the case of equipment faults.
    • 过电流保护装置包括一个开关电路,该开关电路旨在串联连接在被保护电路的一行中,并且允许正常的电路电流通过,但在经受过电流时将断开。 该装置包括脉冲发生器,当开关电路打开该复位或尝试将开关电路复位到其导通状态时,脉冲发生器将产生脉冲。 仅产生预定有限时间的预定有限数量的脉冲或脉冲,使得电路在已经经历电流瞬变之后将再次快速起作用,但在设备故障的情况下不会连续地尝试复位。