EP 0294794 B1 19930811 - PROCESS TO OPEN SOLDERED CONTACTS OF A RELAY AND CIRCUIT TO EXECUTE THE SAME
Title (en)
PROCESS TO OPEN SOLDERED CONTACTS OF A RELAY AND CIRCUIT TO EXECUTE THE SAME
Publication
Application
Priority
DE 3719298 A 19870610
Abstract (en)
[origin: EP0294794A2] In a process for releasing the contacts of a sticking relay (14), whose one contact (20) is arranged in a fixed position and whose other contact (22) is arranged on the ferromagnetic relay armature (34), which relay armature is drawn with its contact (22) towards the fixed-position contact (20) by the application of an electrical voltage to the relay coil (46) winding, and which drops again when no current is passing through the relay coil (46) and the relay (14) is intact, as a result of which the two contacts (20, 22) are separated from one another again, sticking together of the relay contacts (20, 22) is detected and, in the event of relay contacts (20, 22) sticking together, an AC voltage or a pulsating DC voltage is applied to the relay coil (46) winding.
IPC 1-7
IPC 8 full level
H01H 3/00 (2006.01); H01H 47/00 (2006.01)
CPC (source: EP US)
H01H 3/001 (2013.01 - EP US); H01H 47/002 (2013.01 - EP US); H01H 2047/003 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0294794 A2 19881214; EP 0294794 A3 19900829; EP 0294794 B1 19930811; DE 3719298 A1 19881222; DE 3719298 C2 19910207; DE 3883086 D1 19930916; ES 2043728 T3 19940101; US 4914315 A 19900403
DOCDB simple family (application)
EP 88109154 A 19880608; DE 3719298 A 19870610; DE 3883086 T 19880608; ES 88109154 T 19880608; US 20485288 A 19880610