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:
Apr. 11, 1989
Filed:
Nov. 17, 1987
Applicant:
Inventors:
Norio Kobayashi, Nagoya, JP;
Satoshi Yoshimoto, Komaki, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02I / ;
U.S. Cl.
CPC ...
318696 ; 318685 ;
Abstract
A step motor driving device comprises a single control circuit and a single voltage generating circuit for controlling plural step motors, each step motor being connected to a drive circuit. The control circuit outputs a control signal to the voltage generating circuit so that it selectively supplies high voltage and/or low voltage to the step motors. Therefore, the driving device of the present invention can control more than two step motors either jointly or individually by means of a simple circuit structure.