EP 0650112 B1 19980805 - Constant-current source
Title (en)
Constant-current source
Title (de)
Konstantstromquelle
Title (fr)
Source de courant constante
Publication
Application
Priority
DE 4335683 A 19931020
Abstract (en)
[origin: EP0650112A2] The invention relates to a constant-current source which contains two JFETs and a simple resistance network. In this arrangement, the current saturation current is measured by a JFET and converted by the resistance network into a control voltage for the other JFET which generates the desired constant current. Such a circuit can be used for compensating within a wide range for production tolerances, particularly those of the JFETs and for temperature fluctuations due to operation. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP US)
G05F 3/24 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT NL SE
DOCDB simple family (publication)
EP 0650112 A2 19950426; EP 0650112 A3 19950830; EP 0650112 B1 19980805; DE 4335683 A1 19950427; DE 59406607 D1 19980910; ES 2121595 T3 19981201; US 5488328 A 19960130
DOCDB simple family (application)
EP 94115731 A 19941006; DE 4335683 A 19931020; DE 59406607 T 19941006; ES 94115731 T 19941006; US 32649794 A 19941020