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1.发明公开
公开(公告)号：EP1366502A1
公开(公告)日：2003-12-03
申请号：EP02708324.5
申请日：2002-02-01
发明人： BRUCK, Jürgen , SCHULTHEISS, Jörg
IPC分类号： H01H9/54
CPC分类号： H01H9/542 , H01H2009/543 , H01H2009/544 , H01H2009/546
摘要： The invention relates to an electrical circuit for preventing an arc across an electrical contact on opening the contact, whereby the electrical circuit comprises a timer which forces a time-delayed increase in the contact voltage in comparison with an unconnected contact. According to the invention, an electrical circuit for preventing an arc across an electrical contact, which very probably restricts the formation of an arc on opening said circuit contact and is furthermore economically produced and may be miniaturised may be achieved, whereby said electrical circuit comprises a transistor, wired in parallel to the circuit contact. Said transistor may be, for example, a power MOSFET, operated in the source circuit, or a Darlington transistor, formed by a bipolar transistor and a field effect transistor.
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公开(公告)号：EP1295307B1
公开(公告)日：2009-11-25
申请号：EP01940881.4
申请日：2001-06-19
IPC分类号： H01H61/01
CPC分类号： H01H61/0107 , H01H5/18 , H01H2061/0122
摘要： The invention relates to a bistable electrical switch, comprising a spring (101) which is configured in the form of a bistable elastic spring and which supports contact elements (114, 116) on the support strip (104) of the spring; and at least one driving element consisting of shape memory material per control state, for driving the spring. The spring has a leaf (110) which is permanently clamped at one end (102) and which is subjected to a compressive strain in the direction of its longitudinal extension. Buckling causes the leaf to yield to one side, into one of two stable terminal states. The areas of the spring adopt different lateral positions in the stable terminal positions. The driving elements (118, 119) act on the free end of the leaf and cause the leaf to switch to the second stable terminal state as a result of the inclination of the free end (104).
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3.发明授权
公开(公告)号：EP1366502B1
公开(公告)日：2006-10-11
申请号：EP02708324.5
申请日：2002-02-01
发明人： BRUCK, Jürgen , SCHULTHEISS, Jörg
IPC分类号： H01H9/54
CPC分类号： H01H9/542 , H01H2009/543 , H01H2009/544 , H01H2009/546
摘要： The invention relates to an electrical circuit for preventing an arc across an electrical contact on opening the contact, whereby the electrical circuit comprises a timer which forces a time-delayed increase in the contact voltage in comparison with an unconnected contact. According to the invention, an electrical circuit for preventing an arc across an electrical contact, which very probably restricts the formation of an arc on opening said circuit contact and is furthermore economically produced and may be miniaturised may be achieved, whereby said electrical circuit comprises a transistor, wired in parallel to the circuit contact. Said transistor may be, for example, a power MOSFET, operated in the source circuit, or a Darlington transistor, formed by a bipolar transistor and a field effect transistor.
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公开(公告)号：EP1295307A1
公开(公告)日：2003-03-26
申请号：EP01940881.4
申请日：2001-06-19
IPC分类号： H01H61/01
CPC分类号： H01H61/0107 , H01H5/18 , H01H2061/0122
摘要： The invention relates to a bistable electrical switch, comprising a spring (101) which is configured in the form of a bistable elastic spring and which supports contact elements (114, 116) on the support strip (104) of the spring; and at least one driving element consisting of shape memory material per control state, for driving the spring. The spring has a leaf (110) which is permanently clamped at one end (102) and which is subjected to a compressive strain in the direction of its longitudinal extension. Buckling causes the leaf to yield to one side, into one of two stable terminal states. The areas of the spring adopt different lateral positions in the stable terminal positions. The driving elements (118, 119) act on the free end of the leaf and cause the leaf to switch to the second stable terminal state as a result of the inclination of the free end (104).
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