EP 0067185 B1 19850904 - ELECTRONIC DEVICE FOR THE ENERGIZATION OF AN ELECTROMAGNETIC ELEMENT
Title (en)
ELECTRONIC DEVICE FOR THE ENERGIZATION OF AN ELECTROMAGNETIC ELEMENT
Publication
Application
Priority
DE 3047488 A 19801217
Abstract (en)
[origin: WO8202115A1] Electronic device for the energization of an electromagnetic element, particularly a troke-coil or a coil of an electromagnetic switching apparatus having a magnetic circuit with a coil, a yoke and an armature. A comparator (5) receives a predetermined current order value U(Isoll?) and an actual measured cerment value U(Iist?). When the actual value goes down below the order value, the comparator (5) actuates, through a monostable flip flop element (6), a switching transistor (1) supplied by a supply voltage Uv?, arranged in the main current circuit of the electromagnetic element (2). After the constant conduction duration tein? has elapsed, it blocks the transistor (1). With a variable conduction duration tein? of the switching transistor (1), there results a variation of the current order value, function of the set conduction duration. In order to obtain a reliable operating mode of an electromagnetic switching apparatus comprising a coil, there is established a high actuation current order value and, after operation of the switching apparatus, a reduced maintaining current order value. For the operation of different switching states of the switching apparatus, the coil inductivity is taken into account.
IPC 1-7
IPC 8 full level
H01F 7/18 (2006.01); H01H 47/32 (2006.01); H03K 17/64 (2006.01)
CPC (source: EP)
H01H 47/325 (2013.01); H01H 2047/046 (2013.01)
Designated contracting state (EPC)
BE FR
DOCDB simple family (publication)
WO 8202115 A1 19820624; AT 384119 B 19871012; AT A908981 A 19870215; CH 659345 A5 19870115; DE 3047488 A1 19820722; DE 3152626 C1 19930429; DE 3152626 D2 19830811; EP 0067185 A1 19821222; EP 0067185 B1 19850904; GB 2105132 A 19830316; NL 8120487 A 19821101; SE 439400 B 19850610; SE 8204712 D0 19820816; SE 8204712 L 19820816
DOCDB simple family (application)
DE 8100221 W 19811216; AT 908981 A 19811216; CH 501682 A 19811216; DE 3047488 A 19801217; DE 3152626 A 19811216; EP 82900090 A 19811216; GB 8223604 A 19811216; NL 8120487 A 19811216; SE 8204712 A 19820816