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. 17, 2023
Filed:
Jul. 19, 2022
Anpec Electronics Corporation, Hsinchu, TW;
Ming-Jung Tsai, Changhua County, TW;
ANPEC ELECTRONICS CORPORATION, Hsinchu, TW;
Abstract
A motor driver having an automatic phase switching mechanism is provided. After a three-phase motor is started up, a back electromotive force detecting circuit starts detecting a back electromotive force signal of each of three phases of the three-phase motor. A driving waveform generating circuit extracts parts of a plurality of first wave segment patterns from a first wave segment pattern signal as a plurality of first wave segments of a first waveform signal according to the back electromotive force signal. A motor controlling circuit controls the motor driving circuit to drive the three-phase motor to rotate normally according to the first waveform signal.