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    Cross-coupled bridge core memory addressing system
    1.
    发明授权
    Cross-coupled bridge core memory addressing system 失效
    交叉连接核心存储器寻址系统

    公开(公告)号：US3623033A

    公开(公告)日：1971-11-23

    申请号：US3623033D

    申请日：1970-06-29

    Applicant: ELECTRONIC MEMORIES & MAGNETIC

    Inventor： HARDING PHILIP A

    IPC: G11C11/06 ,  H03K17/76 ,  G11C7/00

    CPC classification number: G11C11/06007 ,  H03K17/76

    Abstract: A drive system for a coincident-current magnetic core memory is disclosed which employs a fewer number of transistors to steer drive current of proper polarity through a selected line for read and write cycles. The lines are grouped into 2N groups of S lines, and the groups are associated in pairs. A given pair of groups is cross-coupled to the emitters of one of N pair of transistor switches by diodes, each poled for forward conduction when one of the transistors is activated depending upon both the direction of current flow desired and the group in which the particular line to be driven is. A voltage is applied to the activated transistor of proper polarity for the drive current, and one of S bipolar drive current sources is activated to uniquely drive current through the particular line in the desired direction.

    Method of manufacturing armatures for electromechanical energy converters
    3.
    发明授权
    Method of manufacturing armatures for electromechanical energy converters 失效
    制造电力能量转换器的方法

    公开(公告)号：US3816907A

    公开(公告)日：1974-06-18

    申请号：US30707172

    申请日：1972-11-16

    Applicant: ELECTRONIC MEMORIES & MAGNETIC

    Inventor： SMALL R

    IPC: H02K3/26 ,  H02K15/02

    CPC classification number: H02K13/08 ,  H02K3/26 ,  Y10T29/49012

    Abstract: Armatures of a printed-circuit form are produced on a woven glass fiber tube formed on a mandrel, plating a layer of conductive material on the tube, etching a plurality of grooves to form a first pattern of conductors, repeating the first four steps with a shorter tube of woven glass fiber to provide a second pattern of conductors insulated from the first, but connected thereto through rings of conductive material formed at each end by plating directly over end rings of the first pattern, and cutting axial slots in the end rings to a depth sufficient to disconnect adjacent parallel conductors of each pattern leaving juxtaposed ends of conductors at the ends. For a rigid armature, the layers of woven glass fiber are impregnated with a resin which is rigid when cured and for a flexible armature, with a resin which is flexible when cured.

    Abstract translation: 印刷电路形式的电枢在形成在心轴上的编织玻璃纤维管上产生，在管上镀覆导电材料层，蚀刻多个凹槽以形成第一导体图案，重复前四个步骤 较短的编织玻璃纤维管，以提供与第一图案绝缘的导体的第二图案，但是通过在每个端部形成的导电材料的环通过直接在第一图案的端环上镀覆，并且将端环中的轴向槽切割成 足以断开每个图案的相邻平行导体的深度，在端部处留下导体的并置端部。 对于刚性电枢，机织玻璃纤维层用固化时是刚性的树脂浸渍，并且用于柔性电枢时，树脂在固化时是柔性的。

    Miniature type switch probe for testing integrated circuit assemblies or the like
    4.
    发明授权
    Miniature type switch probe for testing integrated circuit assemblies or the like 失效
    用于测试集成电路总成或类似的微型开关探头

    公开(公告)号：US3812311A

    公开(公告)日：1974-05-21

    申请号：US31364672

    申请日：1972-12-11

    Applicant: ELECTRONIC MEMORIES & MAGNETIC

    Inventor： KVATERNIK J

    IPC: G01R1/067 ,  H01H3/00 ,  G01R31/22

    CPC classification number: G01R1/067

    Abstract: Apparatus for contacting the miniature terminal pads of an integrated circuit, including a frame having a pair of thin glass sheets held a small distance apart by a thin spacer that extends along most of the periphery of the sheets, and a blade of thin conductive sheet material located between the sheets. The blade has a rear end with a recess that receives a bump formed on the spacer for pivotally mounting the blade on the spacer, and the blade also has a thin spring arm that bears against the spacer to urge the blade into firm pivotal engagement with the spacer bump and to bias the blade towards one direction of pivoting.

    Apparatus and method for stringing magnetic cores
    5.
    发明授权
    Apparatus and method for stringing magnetic cores 失效
    用于摆动磁条的装置和方法

    公开(公告)号：US3792527A

    公开(公告)日：1974-02-19

    申请号：US3792527D

    申请日：1972-04-19

    Applicant: ELECTRONIC MEMORIES & MAGNETIC

    Inventor： KRAG N ,  HERNANDEZ E ,  HORVATH K

    IPC: G11C5/12 ,  G11C11/06 ,  H01F7/06 ,  H05K13/04

    CPC classification number: G11C5/12 ,  G11C11/06 ,  Y10T29/49069 ,  Y10T29/53165

    Abstract: A matrix of magnetic cores is strung with electric wires by first laying the wires along with needles attached to their front ends on adhesive tape. The tape is pulled to advance the needles and wires towards the matrix, but the tape passes over an edge so that it separates from the needles and the needles then pass through rows of magnetic cores of the matrix.

    Abstract translation: 通过首先将电线与连接到其前端的针头粘合在一起，将磁芯的矩阵串联在电线上。 带被拉动以将针和线推向基体，但是带通过边缘，使得其与针分离，然后针穿过基体的一排磁芯。

    Magnetic core memory line sink voltage stabilization system
    6.
    发明授权
    Magnetic core memory line sink voltage stabilization system 失效
    磁芯存储线阵列电压稳定系统

    公开(公告)号：US3675221A

    公开(公告)日：1972-07-04

    申请号：US3675221D

    申请日：1970-06-29

    Applicant: ELECTRONIC MEMORIES & MAGNETIC

    Inventor： HARDING PHILIP A

    IPC: G11C7/02 ,  G11C8/02 ,  G11C11/06 ,  G11C5/02

    CPC classification number: G11C11/06007

    Abstract: A magnetic core memory line sink voltage stabilization system is disclosed using a current or voltage source to charge a group of selected lines. The sink ends through which the lines are charged are terminated with the approximate characteristic impedance of all lines connnected at their sink end to a common junction, and a balanced transformer is employed to keep the potential of the junction substantially constant when a current pulse is applied at the drive end of a selected pulse. The primary of the transformer is connected in series with a current pulse source, and the secondary is connected in parallel with the terminating resistor. The turns ratio of the transformer and polarity of the secondary winding are so selected as to inject a current into the common junction substantially equal to that driven through the line by the current pulse source, and of proper polarity, to maintain the potential of the common junction substantially constant.

    Abstract translation: 公开了使用电流或电压源对一组选定线路充电的磁芯存储器线路吸收电压稳定系统。 线路充电的接收端终止于其接收端连接到公共接点的所有线路的近似特性阻抗，并且采用平衡变压器以在施加电流脉冲时保持接合电位基本恒定 在所选脉冲的驱动端。 变压器的初级与电流脉冲源串联连接，次级与终端电阻并联。 变压器的匝数比和次级绕组的极性被选择为将电流注入基本上等于由电流脉冲源驱动的公共端并具有适当极性的电流，以保持共同的电位 接头基本恒定。

    Current pulse stabilizer for variable loads
    7.
    发明授权
    Current pulse stabilizer for variable loads 失效
    用于可变负载的电流脉冲稳定器

    公开(公告)号：US3621371A

    公开(公告)日：1971-11-16

    申请号：US3621371D

    申请日：1970-04-02

    Applicant: ELECTRONIC MEMORIES & MAGNETIC

    Inventor： BRUMM WAYNE R

    IPC: G11C11/06 ,  H03K3/45 ,  H03K5/08 ,  G05F3/08

    CPC classification number: G11C11/06007 ,  H03K3/45 ,  H03K5/08

    Abstract: Amplitude of a fast-rise pulse current is stabilized under varying load conditions by a transformer having a first winding connected in series between a pulse voltage source and a variable load. A square loop hysteresis core of the transformer is biased with regulated DC current in a second winding through a choke coil which stores energy while the bias field is being overcome by a voltage pulse, and restores energy to a power supply for the current pulse source at the end of the current pulse. In a core memory plane, the bias current source services current pulse sources of both polarities for all drive lines and adjacent bit lines are paired with current sources of opposite polarities during read and write cycles to provide tight controlled current loops. Positive and negative energy is returned to the power supply from the choke coil in a substantially balanced manner for both bit (y) and word (x) drive lines.

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