EP 1008740 A1 20000614 - A circuit device for driving inductive loads
Title (en)
A circuit device for driving inductive loads
Title (de)
Schaltungsanordnung zum Treiben induktiver Lasten
Title (fr)
Dispositif de circuit pour commander des charges inductives
Publication
Application
Priority
IT TO981028 A 19981209
Abstract (en)
A circuit device for driving inductive loads is described, the device being connectable to a direct-current voltage supply (12) and comprising at least one circuit branch (B1, B2) for connection to at least one respective inductive load (I1, I4; I2, I3). Each circuit branch (B1; B2) comprises, in combination: a current-regulator module (14) comprising a first electronic switch (Q1) which is arranged to be turned on by pulse-width-modulated enabling signals so as to regulate the current to be supplied to each load (I1, I4; I2, I3); second electronic switches (Q21, Q24; Q22, Q23) each of which is associated with a respective load (I1, I4; I2, I3) and which can be turned on selectively in predetermined ways such as to permit a flow of current from the supply (12) through the respective load (I1, I4; I2, I3); and a current-recirculation network (D1, D21, D24; D1, D22, D23) for taking away the transient discharge current generated every time a load is disconnected from the supply (12). <IMAGE>
IPC 1-7
IPC 8 full level
F02D 41/20 (2006.01); H01F 7/18 (2006.01)
CPC (source: EP)
F02D 41/20 (2013.01); F02D 2041/2006 (2013.01); F02D 2041/2027 (2013.01); H01F 7/1816 (2013.01)
Citation (search report)
- [A] EP 0478436 A1 19920401 - RENAULT [FR]
- [A] US 4862866 A 19890905 - CALFUS MARCO [IT]
Designated contracting state (EPC)
DE ES FR GB SE
DOCDB simple family (publication)
EP 1008740 A1 20000614; EP 1008740 B1 20040128; DE 69914445 D1 20040304; DE 69914445 T2 20040722; ES 2210950 T3 20040701; IT 1303596 B1 20001114; IT TO981028 A0 19981209; IT TO981028 A1 20000609
DOCDB simple family (application)
EP 99124311 A 19991206; DE 69914445 T 19991206; ES 99124311 T 19991206; IT TO981028 A 19981209