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:
Oct. 09, 2007
Filed:
Apr. 29, 2004
Peter Busch, Augsburg, DE;
Peter Busch, Augsburg, DE;
Fujitsu Siemens Computers GmbH, Munich, DE;
Abstract
A control unit for driving a regulating transistor () of a fan arrangement, in which the regulating transistor () is connected in series with an electronically commutated fan (), having control means (, R, R) for the analog driving of the regulating transistor () with a control signal (U) in a manner dependent on a control input voltage (U). The control unit comprises compensation means (R, R) for influencing the control signal (U) in a manner dependent on an AC voltage component (U) of an operating voltage (U) of the fan arrangement, so that the AC voltage component (U) of the operating voltage (U) is completely or partially compensated for in a voltage across the fan ().