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:
Dec. 03, 1985
Filed:
Mar. 21, 1983
Applicant:
Inventor:
Kenji Fujibayashi, Tokyo, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 741 ; 360 742 ; 360 73 ;
Abstract
A tape recorder motor circuit includes an automatic shutoff circuit and a motor servo circuit formed by a constant current circuit section, a bridge circuit, and an amplifier section. The constant current circuit section is connected to a power source through a switching transistor which is controlled by the automatic shutoff circuit. The amplifier section of the motor servo circuit is connected in a substantially direct manner to the power source, not through the switching transistor.