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. 13, 2015
Filed:
Oct. 20, 2011
Applicant:
Peter Busch, Augsburg, DE;
Inventor:
Peter Busch, Augsburg, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 23/00 (2006.01); H02P 3/00 (2006.01); H02P 7/06 (2006.01); G06F 1/20 (2006.01); H05K 7/20 (2006.01);
U.S. Cl.
CPC ...
H02P 7/06 (2013.01); G06F 1/20 (2013.01); G06F 1/206 (2013.01); H05K 7/20209 (2013.01);
Abstract
A regulating circuit that regulates rotary speed of a pulse-width modulated fan includes a measuring device that determines a period duration (T) of a tacho signal (TACH) of the fan, a digital regulating register that acquires a regulation value to drive the fan on the basis of a determined period duration (T) and a desired value (T), a digital control register that adjusts a duty ratio to drive the fan, the digital control register has a smaller register width than the digital regulating register, and a controller that updates the digital control register by evaluating a predetermined number of more significant bits of the digital regulating register.