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:
Dec. 28, 1999
Filed:
Nov. 20, 1998
Hao Chen, Plano, TX (US);
Edward N Jeffrey, Garland, TX (US);
Fredrick W Trafton, Lewisville, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A method of driving an electric motor includes generating a periodic, driving voltage. The driving voltage comprises a sequence of first, second, and third waveforms. The first waveform in the sequence is a generally constant, high voltage. The second waveform in the sequence is a down hook voltage. The third waveform in the sequence is an up hook voltage. The method also includes applying the driving voltage to a coil of the motor to generate a generally sinusoidal current through the coil of the motor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile