Controllable digital pulse generator and a test system incorporating the pulse generator
    1.
    发明授权
    Controllable digital pulse generator and a test system incorporating the pulse generator 失效
    可控数字脉冲发生器和配有脉冲发生器的测试系统

    公开(公告)号:US3659087A

    公开(公告)日:1972-04-25

    申请号:US3659087D

    申请日:1970-09-30

    Applicant: IBM

    CPC classification number: G01R13/345 H03K5/01 H03K5/13

    Abstract: A digital pulse generator provides pulses of arbitrary width. The width of the pulses may be much less than the length of a clock cycle. Once the pulse generator has been adjusted it can produce many pulse patterns without further adjustment. A test system which provides extremely accurate information about a device under test incorporates the pulse generator as its primary element.

    Abstract translation: 数字脉冲发生器提供任意宽度的脉冲。 脉冲的宽度可以远小于时钟周期的长度。 一旦调整了脉冲发生器,它就可以产生许多脉冲模式,无需进一步调整。 提供关于被测器件的非常精确的信息的测试系统将脉冲发生器作为其主要元件。

    3.
    发明专利
    未知

    公开(公告)号:FR2357050A1

    公开(公告)日:1978-01-27

    申请号:FR7718258

    申请日:1977-06-09

    Applicant: IBM

    Abstract: GAS OPERATED SWITCHES: Switches operated by gas, preferably controlled electrothermally, include a capillary tube closed at both ends with a conductive liquid piston dividing the tube into two chambers each filled with a non-oxidizing gas. A pair of electrical contact points are disposed within the capillary tube with the piston positioned to, at selected intervals, contact both points simultaneously. In one embodiment of the switches, a closed glass capillary tube contains a pair of aligned nickel wires with ends selectively contacted simultaneously by a mercury piston or globule providing a circuit-closing position for the switch. The switch is set in the circuit-closing position by applying heat to a non-oxidizing gas within one end of the capillary tube. The switch is then reset to a circuit-opening position at any desired time by applying heat to a non-oxidizing gas within the other end of the capillary tube. The non-oxidizing gas is heated by electrothermal means disposed at each end of and within the ends of the capillary tube. A barrier such as a collar disposed near the end of each of the wires is provided to prevent the mercury piston or globule from separating into a plurality of globules upon application of strong forces to the globule from either end of the tube.

    GAS OPERATED SWITCHES
    4.
    发明专利

    公开(公告)号:CA1093618A

    公开(公告)日:1981-01-13

    申请号:CA281609

    申请日:1977-06-28

    Applicant: IBM

    Abstract: GAS OPERATED SWITCHES: Switches operated by gas, preferably controlled electrothermally, include a capillary tube closed at both ends with a conductive liquid piston dividing the tube into two chambers each filled with a non-oxidizing gas. A pair of electrical contact points are disposed within the capillary tube with the piston positioned to, at selected intervals, contact both points simultaneously. In one embodiment of the switches, a closed glass capillary tube contains a pair of aligned nickel wires with ends selectively contacted simultaneously by a mercury piston or globule providing a circuit-closing position for the switch. The switch is set in the circuit-closing position by applying heat to a non-oxidizing gas within one end of the capillary tube. The switch is then reset to a circuit-opening position at any desired time by applying heat to a non-oxidizing gas within the other end of the capillary tube. The non-oxidizing gas is heated by electrothermal means disposed at each end of and within the ends of the capillary tube. A barrier such as a collar disposed near the end of each of the wires is provided to prevent the mercury piston or globule from separating into a plurality of globules upon application of strong forces to the globule from either end of the tube.

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