The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2013
Filed:
Dec. 04, 2008
Guillaume Caubert, Paris, FR;
Dominique Dupuis, Bruyeres sur Oise, FR;
Julien Horbraiche, Chevrieres, FR;
Guillaume Caubert, Paris, FR;
Dominique Dupuis, Bruyeres sur Oise, FR;
Julien Horbraiche, Chevrieres, FR;
Valeo Systemes de Controle Moteur, Cergy Pontoise, FR;
Abstract
The present invention relates to a circuit () for controlling the current in an electrical control member () comprising a bridge provided with four terminals () and comprising four control switches (AH, AL, BH, BL), a power source (), PWM control means for at least two of the four switches. The control circuit exhibits a first state in which said first (AH) and fourth (BL) switches are closed and said second (BH) and third (AL) switches are open, a second state in which said second (BH) and third (AL) switches are closed and said first (AH) and fourth (BL) switches are open and at least one of the following two states: a third state in which said third (AL) and fourth (BL) switches are closed and said first (AH) and second (BH) switches are open and/or a fourth state in which said first (AH) and second (BH) switches are closed and said third (AL) and fourth (BL) switches are open. A particularly interesting application of the invention lies in the field of controlling the current for the actuators used for 'camless' systems in motor vehicles.