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    • 64. 发明授权
    • Programmable bed-of-nails test access jigs
    • 可编程床钉测试进入夹具
    • US4730159A
    • 1988-03-08
    • US744461
    • 1985-06-12
    • Roderick J. W. Collins
    • Roderick J. W. Collins
    • G01R31/28G01R1/073
    • G01R1/07392G01R1/07371
    • Bed-of-nails test access jigs are commonly used to effect the required electrical connections between an electronic circuit constructed on a printed circuit board (PCB) and the automatic (electrical) test equipment (ATE) used to carry out their testing. "Fixed" bed-of-nails jigs have a number of disadvantages that can be overcome by the use of a programmable bed-of-nails jig, but the present-day programmable systems using apertured masks, or secondary pin frames, to set up a particular pin configuration, do not provide a good solution where the pin configuration has to be changed during the testing sequence. The invention suggests a design employing individually-controlled pin control mechanisms such that from a total field of pins individual pins can be programmed to make contact with the PCB. It enables the pin actuating mechanism to fit into the space available by proposing the use of miniature clutch, or valve, mechanisms involving the utilization of an electro rheological fluid. The inventive bed-of-nails device is thus one in which there are individual pin control mechanisms, functionally separate from the control means of any other pin, that utilize either the valve- or the clutch-forming abilities of an electro rheological fluid.
    • 钉子测试通道夹具通常用于实现在印刷电路板(PCB)上构建的电子电路和用于执行测试的自动(电气)测试设备(ATE)之间所需的电气连接。 “固定”指甲夹具有许多缺点,可以通过使用可编程的钉子夹具来克服,但是使用有孔掩模或辅助针脚框架的当今可编程系统来设置 特定的引脚配置,不能提供在测试序列期间必须更改引脚配置的良好解决方案。 本发明提出了一种使用单独控制的引脚控制机构的设计,使得从总体引脚中的各个引脚可以被编程为与PCB接触。 它通过提出使用微型离合器或阀门涉及利用电流变流体的机构,能够将销引导机构装配到可用的空间中。 因此,本发明的钉子装置是其中存在利用电流变流体的阀门或离合器形成能力的单独销钉控制机构,其功能上与任何其它销钉的控制装置分离。
    • 65. 发明授权
    • Lamps and ribbon seals
    • 灯和丝带密封
    • US4682071A
    • 1987-07-21
    • US876276
    • 1986-06-19
    • Paul Thorpe
    • Paul Thorpe
    • H01J61/36H01J61/86H01J5/32
    • H01J61/86H01J61/366
    • An electric lamp designed to operate in air and of the type incorporating at least one current-supply foil embedded within and extending along a light transmitting stem and welded at its inner and outer ends to an inner conductor and a terminal conductor respectively, in which the end face of the stem is unenclosed and is such that a proportion of radiation which is incident upon it from the lamp in use thereof is directed away from the foil and adjacent region of the terminal conductor. The invention is especially applicable to high power lamps and has the effect of reducing the temperature of the outer ends of the current-supply foils, which are vulnerable to oxidation.
    • 一种设计用于在空气中操作的电灯,其类型包括嵌入在光透射杆内并沿其透光杆延伸并至少在其内端和外端处焊接到内导体和端子导体的至少一个电流源箔,其中 杆的端面未被封闭,并且使得从其使用的灯入射到其上的一部分辐射被引导离开端子导体的箔和相邻区域。 本发明特别适用于大功率灯,并且具有降低容易氧化的电流箔的外端的温度的作用。
    • 67. 发明授权
    • Apparatus for controlling the transfer of interrupt signals in data
processors
    • 用于控制数据处理器中的中断信号传输的装置
    • US4638432A
    • 1987-01-20
    • US598469
    • 1984-04-09
    • John A. NiblockJayant PatelDennis FisherAnthony P. Lumb
    • John A. NiblockJayant PatelDennis FisherAnthony P. Lumb
    • G06F13/24G06F11/00G06F11/30
    • G06F13/24
    • To ensure security of interrupt input signals to a computer system (30-3N) with minimum interruption of the running of programs in the system, two interrupt logic units (1) receive interrupt signals on leads (20-2x) from connected apparatus and store flags representing the interrupt signals in an interrupt store (2). Control logic (3) compares each input signal with presettable criteria to determine if such signal is an interrupt signal and, if so, causes the data to be transferred by way of a read register (5) to the connected computer system (30-3N). At the same time the control logic (3) of one of the units (1) designated as the active unit also causes an ouput on a lead (11) to the other unit (1) designated as the standby unit. If the standby unit determines that an immediate interrupt has occurred and does not receive a signal on the lead (11), its respective control logic (3) will cause the contents of its interrupt store (2) to be transferred to its respective read register (5) and will also cause an additional flag to be entered in the read register (5) indicating the failure of the active unit (1). Designation of the two units (1) as "active" or "standby" is periodically changed by action of the computer system (30-3N).
    • 为了确保中断输入信号到计算机系统(30-3N)的安全性,最少中断系统中的程序运行,两个中断逻辑单元(1)从连接的设备的引线(20-2x)上接收中断信号并存储 表示中断存储器(2)中的中断信号的标志。 控制逻辑(3)将每个输入信号与可预置标准进行比较,以确定这种信号是否为中断信号,如果是这样,则将数据通过读寄存器(5)传送到连接的计算机系统(30-3N )。 同时,指定为有效单元的单元(1)之一的控制逻辑(3)还将引线(11)上的输出引到指定为备用单元的另一单元(1)上。 如果待机单元确定已经发生立即中断并且没有在引线(11)上接收到信号,则其相应的控制逻辑(3)将使其中断存储器(2)的内容被传送到其相应的读寄存器 (5),并且还将在读取寄存器(5)中引入指示有效单元(1)的故障的附加标志。 通过计算机系统(30-3N)的动作来定期地改变两个单元(1)作为“活动”或“待机”的指定。
    • 68. 发明授权
    • DC-DC converter with galvanically isolated feedback voltage regulation
    • DC-DC转换器具有电隔离反馈电压调节
    • US4628429A
    • 1986-12-09
    • US671239
    • 1984-11-14
    • John D. Walker
    • John D. Walker
    • H02M3/335
    • H02M3/33546
    • A switched mode power supply has a sense transformer (TX2) with three windings. A first (primary) winding (WD) is in series with the primary winding (WP1) of the power transformer (TX1). Current regulation of the output is provided via a second (sense) winding (WS). Voltage regulation of the output is provided by a further (third) winding (WC) being connected in parallel with the secondary winding (WP2) of the power transformer for producing isolated feedback of an output voltage error signal using the sense transformer (TX2) as a current summing transformer.
    • 开关模式电源具有三个绕组的感测变压器(TX2)。 第一(初级)绕组(WD)与电力变压器(TX1)的初级绕组(WP1)串联。 通过第二(感测)绕组(WS)提供输出的电流调节。 输出的电压调节由与功率变压器的次级绕组(WP2)并联连接的另外(第三)绕组(WC)提供,用于使用感测变压器(TX2)产生输出电压误差信号的隔离反馈,作为 一个电流求和变压器。
    • 69. 发明授权
    • Line identification apparatus for a telecommunications exchange
    • 线路识别装置
    • US4587381A
    • 1986-05-06
    • US556343
    • 1983-11-30
    • Robert Cheetham
    • Robert Cheetham
    • H04Q11/04H04Q1/30H04Q3/78
    • H04Q11/04
    • A telecommunications exchange includes line identification apparatus in which signals on additional wires (the `p` wires) (1) which are switched in parallel with the speech pairs are used to identify an originating exchange line circuit. On detection of seizure of the `p` wire (1) at one of a number of call logging points (11) a data signal is transmitted by a transmitter circuit (9). On detection of such a signal a receive circuit (2) adds a plurality of data bits to the signal identifying one of a number of associated `p` wires (1) on which the signal was received and transmits the modified data signal to a receiver multiplexer (4, 4'). On receipt of the modified data signal the receiver multiplexer (4, 4') adds a respective plurality of data bits to the signal identifying one of a plurality of receivers (2) connected thereto and retransmits the signal to a further multiplexer (5, 5'). The further multiplexer (5, 5') adds a respective plurality of bits and transmits the signal to a control circuit (6, 6') which adds further bits identifying the further multiplexer (5, 5'). The complete signal is then transmitted to call logging apparatus.
    • 电信交换机包括线路识别装置,其中使用与语音对并行切换的附加线路(“p”线)(1)上的信号来识别始发交换线路电路。 在检测到在多个呼叫记录点(11)中的一个呼叫记录点(11)处检测到“p”线(1)时,数据信号由发射机电路(9)发送。 在检测到这样的信号时,接收电路(2)将多个数据位添加到识别接收到信号的多个相关“p”线(1)中的一个的信号,并将修改的数据信号发送到接收机 多路复用器(4,4')。 在接收到经修改的数据信号后,接收机多路复用器(4,4')将相应的多个数据位加到识别连接到其上的多个接收器(2)中的一个的信号上,并将该信号再发送到另一多路复用器(5,5) ')。 另外的多路复用器(5,5')添加相应的多个位,并将该信号发送到控制电路(6,6'),该控制电路增加了识别另外的多路复用器(5,5')的其他位。 然后将完整的信号发送到呼叫记录仪。
    • 70. 发明授权
    • Telecommunication system loop-back unit
    • 电信系统环回单元
    • US4560842A
    • 1985-12-24
    • US481843
    • 1983-04-04
    • Joseph A. Homer
    • Joseph A. Homer
    • H04M3/30H04B3/46
    • H04M3/301
    • A loop-back unit for connection at the subscriber's end of a line (15) to provide a loop-back line testing facility, the unit comprising a transformer (1) with a first winding (3) and second winding (5) of relatively high inductance, connected in series across the line, and a third winding (7). In normal operation the subscriber's unit (17) is connected across the second winding and the transformer is transparent to signals on the line. To test the line a tone is applied to the line which is detected by a detector (25) connected across the third winding and in response to the detector output a control circuit (23) operates a switching arrangement (21) to disconnect the subscriber's equipment temporarily from the second winding and apply a test tone across the second winding. The unit is capable of satisfactory operation despite faults in the subscriber's equipment.
    • 一种环回单元,用于在线路(15)的用户端处连接以提供回环线路测试设施,该单元包括具有相对于第一绕组(3)和第二绕组(5)的变压器(1) 高电感,串联连接在一起,以及第三绕组(7)。 在正常操作中,用户单元(17)跨越第二绕组连接,并且变压器对线路上的信号是透明的。 为了测试线路,将线路施加到由连接在第三绕组上的检测器(25)检测到的线路,并且响应于检测器输出,控制电路(23)操作切换装置(21)以断开用户设备 暂时从第二个绕组,并在第二个绕组上施加测试音。 该设备能够令人满意的操作,尽管用户设备中出现故障。