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:
Feb. 02, 2010
Filed:
Jun. 26, 2006
Stefan Koch, Kappelrodeck, DE;
Stefan Koch, Kappelrodeck, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a control circuit for an arrangement having at least two DC motors (), which can be connected in parallel to a DC voltage system (), in particular a circuit for controlling at least two motors of a motor vehicle fan. In this case, the DC motors () can be connected to the DC voltage system (), on the one hand, during starting, jointly via in each case one series resistor () having a low resistance value and a common semiconductor switching element () and, on the other hand, during operation, via separate semiconductor switching elements (), the series circuit comprising the separate series resistors () and the common semiconductor switching element () being arranged in parallel with the separate semiconductor switching elements () for controlling the motors during operation.