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. 03, 2004
Filed:
Jun. 14, 2002
Davis Fan, Taipei, TW;
Champion Microelectronic Corp., Hsinchu, TW;
Abstract
The present invention provides a motor control device, which comprises a signal control circuit having an input pin to output different motor drive signals according to input electronic signals. The signal control circuit is also protected for over current and over voltage. Two switch circuits of brake before make configuration are connected to the signal control circuit. An inverter is arranged between the two switch circuits. The inverter switches the motor drive signal among the two switch circuits and transmits it to a driver, which is connected to a motor drive circuit. A power source circuit is connected to the motor drive circuit to provide electricity for the motor drive circuit. A back electromotive force (back EMF) component for detection and control of the rotation speed of motor is disposed in the driver. The motor control device of the present invention has the advantages of reduced number of pins and shrunk volume.