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:
Jul. 16, 1996
Filed:
Jul. 26, 1994
Osamu Yaguchi, Kashiwazaki, JP;
Kabushiki Kaisha Riken, Tokyo, JP;
Abstract
A DC motor control circuit for controlling a restraint torque of a DC motor which continues the rotation by triggering an external force. This control circuit is installed in a DC motor. In a DC motor control circuit comprising a drive transistor collector connected to a first brush of a DC motor, and a detection transistor collector connected to the base of said drive transistor and base connected to said first brush, a variable resistor is connected between the emitter of said detection transistor and a second brush of said DC motor and a capacitor connected between their one end and movable terminal of said variable resistor. The control circuit further comprises a drive current limiter for the drive transistor.