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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
Inventor: HAMMARLUND G , JOHANSSON A
IPC: H03K17/292 , H01H43/00
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.
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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
IPC: H02M1/08
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公开(公告)号:YU308968A
公开(公告)日:1973-10-31
申请号:YU308968
申请日:1968-12-26
Applicant: ASEA AB
Inventor: JOHANSSON A , LUNGNER M , JAAKSOO L
IPC: H01R33/76 , H01H45/14 , H01R13/20 , H01R13/703 , H02G
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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
IPC: H02H3/08
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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
Inventor: JOHANSSON A , JOHANSSON L
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.
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