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:
Mar. 10, 1987
Filed:
May. 06, 1985
Eiichi Ishii, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
The motor control circuit is constituted by a current controlling circuit having a first output terminal connected to a source terminal via a resistor, a second output terminal connected to the source terminal through a motor to be controlled, the currents outputted by the first and second output terminals being controlled by an input signal, a reference voltage generator producing a constant reference voltage, a comparator comparing the reference voltage with the output voltage of the second output voltage, a drive circuit responsive to the output voltage of the comparator for applying a control signal to the current controlling circuit, and a limiter which prevents the voltage at the first output terminal of the current controlling circuit from becoming lower than the reference voltage.