11.
    发明专利
    未知

    公开(公告)号:SE376108B

    公开(公告)日:1975-05-05

    申请号:SE1457272

    申请日:1972-11-10

    Applicant: ASEA AB

    Abstract: An arrangement for achieving a short recovery time in a time lag relay, composed of static components in which the delay is determined by the charging time of a capacitor, includes two programmable unijunction transistors with the anode-cathode path in parallel with the capacitor and the control electrodes connected each to one voltage divider between the poles of the feeding voltage source. The voltage dividers are so designed and the control electrodes so connected to their voltage dividers that, during the charging of the capacitor, the voltage on the control electrode of the first transistor is higher than the voltage on the control electrode of the second transistor. If the charging process is interrupted before the relay has operated, the voltage on the control electrode of the first transistor falls more quickly than the voltage on the control electrode of the second transistor.

    13.
    发明专利
    未知

    公开(公告)号:SE305484B

    公开(公告)日:1968-10-28

    申请号:SE1219364

    申请日:1964-10-10

    Applicant: ASEA AB

    Inventor: JOHANSSON A

    15.
    发明专利
    未知

    公开(公告)号:SE351087B

    公开(公告)日:1972-11-13

    申请号:SE341670

    申请日:1970-03-16

    Applicant: ASEA AB

    Inventor: JOHANSSON A

    18.
    发明专利
    未知

    公开(公告)号:SE425875B

    公开(公告)日:1982-11-15

    申请号:SE8102426

    申请日:1981-04-15

    Applicant: ASEA AB

    Abstract: A wedging device comprises at least two bodies which are movable in relation to each other, namely a first body having two diverging surfaces and a second body which is displaceable relative to the first body along one of its diverging surfaces. A heat-shrinkable casing, made for example from a tape, sheet or film of polymeric material, is arranged around the movable bodies of the device. When the device is heated, the casing shrinks, causing relative displacement between the first and second bodies and a consequent change in the outer dimensions of the device.

Patent Agency Ranking