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. 07, 1980
Filed:
Mar. 01, 1978
Yoshikazu Kawamura, Suwa, JP;
Kabushiki Kaisha Suwa Seikosha, Tokyo, JP;
Abstract
A step motor driving circuit for selectively effecting a rotational stepping of a rotor in a forward rotational direction or in a reverse rotational direction is provided. The driving circuit is coupled to the drive coil of a motor and is disposable into a first mode for applying, to the drive coil, a first drive signal for effecting a periodic rotation of the rotor in a first rotational direction. The drive circuit is further disposable into a second mode for applying to the drive coil a second drive signal for effecting a periodic rotation of the rotor in the opposite rotational direction. A mode select circuit is coupled to the drive circuit and is adapted to dispose the drive circuit into either a first or second mode to thereby select the direction of rotation of the rotor.