EP 2662554 A1 20131113 - Driving circuit for a magnetic valve
Title (en)
Driving circuit for a magnetic valve
Title (de)
Treiberschaltung für ein Magnetventil
Title (fr)
Circuit de commande pour vanne magnétique
Publication
Application
Priority
EP 12464009 A 20120511
Abstract (en)
The invention relates to a driving circuit for a magnetic valve comprising a comparator with variable hysteresis (30). The comparator with variable hysteresis (30) additional to a measuring input terminal (CMP_IN(+)) and a control input terminal (CMP_IN(-)) has an output terminal (CMP_OUT) and comprises: an operational amplifier (31) having an non-inverting input terminal (+),an inverting input terminal (-) and an output terminal (CMP_OUT), a serial connection comprising a third resistor (34), a second resistor (33), a first resistor (32) and a control voltage source delivering a variable threshold value (V ctrl ), the serial connection being connected in parallel to a supply voltage (V 5V ) whereby a partial serial connection comprising the second resistor (33), the first resistor (32) and the control voltage source being connected in parallel to a further switching element (35) and the point of connection between the second (33) and first (32) resistor being a voltage tap (V in ), whereby the inverting input terminal (-) of the operational amplifier (31) being connected with the voltage tap (V in ) and the output terminal (CMP_OUT) of the operational amplifier (31) being connected with the control input terminal of the further switching element (35).
IPC 8 full level
F02D 41/20 (2006.01); H01H 47/32 (2006.01)
CPC (source: EP)
F02D 41/20 (2013.01); F02D 2041/2048 (2013.01); F02D 2041/2058 (2013.01); F02D 2041/2068 (2013.01); H01H 47/325 (2013.01)
Citation (applicant)
- US 5748431 A 19980505 - GOODNIGHT TRENT LYNN [US], et al
- US 4764840 A 19880816 - PETRIE ADELORE F [US], et al
- US 5784245 A 19980721 - MORAGHAN PAUL [US], et al
- US 4949215 A 19900814 - STUDTMANN GEORGE H [US], et al
- US 4605983 A 19860812 - HARVEY IAN J [GB]
Citation (search report)
- [Y] US 5166550 A 19921124 - MATSUBARA KUNIHIRO [JP], et al
- [YD] US 4949215 A 19900814 - STUDTMANN GEORGE H [US], et al
- [A] DE 19929749 A1 20000113 - ZEXEL CORP [JP]
- [A] DE 10038083 A1 20010329 - DENSO CORP [JP]
- [A] EP 0999354 A2 20000510 - SIEMENS AUTOMOTIVE CORP LP [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 12464009 A 20120511