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. 22, 1985
Filed:
Feb. 14, 1984
Applicant:
Inventors:
Yasufumi Tanimoto, Fujisawa, JP;
Masahiko Ogura, Fujisawa, JP;
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P / ; G05B / ;
U.S. Cl.
CPC ...
318696 ; 318138 ; 318254 ; 318439 ;
Abstract
A pulse motor-driving circuit is disclosed, which circuit includes first and second exciting coils inductively coupled to each other, and first and second switching transistors for alternately exciting the exciting coils, through a D.C. power source. A Zener diode is connected to each of the switching transistors, for suppressing a transient voltage to be impressed on the switching transistors, when the excitations of the exciting coils are changed.