EP 0185377 B1 19890607 - SIGNALLING CIRCUIT
Title (en)
SIGNALLING CIRCUIT
Publication
Application
Priority
DE 3446628 A 19841220
Abstract (en)
[origin: US4712056A] A signalling circuit which outputs reference potential at either a first or second output, dependent on an input signal. The signalling circuit operates reliably in a large range of operating voltage with an optimally low power consumption. A constant current circuit and a parallel connection of two current paths fed by constant current are provided in a circuit connected to an operating voltage source. The first and second outputs are respectively connected to reference potential via respective electronic switches controllable by the current of the respective current path. The constant current is switchable from one current path to the other and vice versa, dependent upon the input criteria.
IPC 1-7
IPC 8 full level
G01R 19/165 (2006.01); G08B 23/00 (2006.01); G08B 29/00 (2006.01)
CPC (source: EP US)
G08B 23/00 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0185377 A1 19860625; EP 0185377 B1 19890607; AT E43930 T1 19890615; DE 3446628 A1 19860626; DE 3570936 D1 19890713; JP S61151471 A 19860710; NO 169257 B 19920217; NO 169257 C 19920527; NO 855181 L 19860623; US 4712056 A 19871208
DOCDB simple family (application)
EP 85116256 A 19851219; AT 85116256 T 19851219; DE 3446628 A 19841220; DE 3570936 T 19851219; JP 28319285 A 19851218; NO 855181 A 19851219; US 80918885 A 19851216