EP 1454154 A2 20040908 - DEVICE FOR ADJUSTING AN OPERATING POINT OF A MAGNETIC FIELD SENSOR
Title (en)
DEVICE FOR ADJUSTING AN OPERATING POINT OF A MAGNETIC FIELD SENSOR
Title (de)
VORRICHTUNG ZUM EINSTELLEN EINES ARBEITSPUNKTES EINES MAGNETFELDSENSORS
Title (fr)
DISPOSITIF POUR LE REGLAGE D'UN POINT DE FONCTIONNEMENT D'UN CAPTEUR DE CHAMP MAGNETIQUE
Publication
Application
Priority
- DE 10139883 A 20010820
- EP 0208799 W 20020807
Abstract (en)
[origin: WO03019214A2] The invention relates to a device for adjusting an operating point of a magnetic field sensor having a periodic characteristic line, especially a device for detecting a magnetic field and/or flux. The inventive device comprises a SQUID as the magnetic field sensor and a control unit mounted downstream of the SQUID and having a control time constant (t) with a feedback loop that acts upon the SQUID. Said feedback loop is adapted to be effective around one operating point among a plurality of operating points associated with the SQUID. Flux quantum pump means are associated with the SQUID and are provided with a signal producing unit that produces a control and/or regulation signal for the SQUID. The flux quantum pump means are designed in such a manner that for pumping at least one flux quantum into or out of the SQUID a signal form of the control or regulation signal produced by the signal producing unit is different and, with respect to an ascending and a descending side of a signal form, is asymmetric, only one side of a signal form at a time being short in relation to the control time constant.
IPC 1-7
IPC 8 full level
G01R 33/035 (2006.01); H01L 39/22 (2006.01)
CPC (source: EP US)
G01R 33/0356 (2013.01 - EP US)
Citation (search report)
See references of WO 03019214A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 03019214 A2 20030306; WO 03019214 A3 20040527; AU 2002333352 B2 20061116; DE 10139883 C1 20030605; EP 1454154 A2 20040908; JP 2005501264 A 20050113; US 2004207397 A1 20041021; US 6917197 B2 20050712
DOCDB simple family (application)
EP 0208799 W 20020807; AU 2002333352 A 20020807; DE 10139883 A 20010820; EP 02796208 A 20020807; JP 2003524026 A 20020807; US 48726704 A 20040219