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. 15, 2011
Filed:
Dec. 18, 2007
Applicants:
Nigel Strike, Phoenix, AZ (US);
Eric Hardt, Mesa, AZ (US);
Inventors:
Nigel Strike, Phoenix, AZ (US);
Eric Hardt, Mesa, AZ (US);
Assignee:
Minebea Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a drive circuit for generating the drive current used to energize the windings of a motor. The drive circuit includes a data processing unit that produces two outputs used to control an H-bridge and generation of the drive current. One output, a commutation signal, controls the timing of generation of drive current. The drive current in turn is determined based on the other output, a speed signal. The speed signal waveform includes blanking portions to avoid occurrences of shoot through in the H-bridge.