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:
Mar. 02, 2004
Filed:
Nov. 29, 2001
Rone-Fue Jean, Miao Li, TW;
Microtek International Inc., , TW;
Abstract
A motor failure detecting module and a motor driving circuit with the module are proposed. The driving circuit includes a sensing unit, a comparator, an AND gate, a switch and a failure detecting module. The sensing unit is to measure the current flowing through the motor and generating a detecting voltage. The comparator is used to compare the detecting voltage with a reference voltage and generate a compared signal. The AND gate receives the compared signal and a control signal and generates a motor driving signal to control the switch. The switch controls the coils of the stepping motor. And the failure detecting module is used to detect whether the motor is failure according to the frequency and/or duration of the compared signal.