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:
Nov. 29, 1983
Filed:
Mar. 22, 1982
Fumiyoshi Abe, Zama, JP;
Takayuki Okafuji, Yokohama, JP;
Sony Corporation, Tokyo, JP;
Abstract
A DC motor control circuit for controlling the speed and direction of rotation including a plurality of linear amplifiers which are, respectively, connected to each of the stator windings of the DC motor and a pulse generator for generating rotational pulse trains which represent the rotational phases of the rotor of the DC motor and output impedance control pulse generator for generating based on the rotational pulse train control pulses which selectively control the linear amplifiers so as to produce nearly infinite output impedance and a motor control voltage and signal inverter for inverting the motor control voltage and a plurality of switching circuits connected to the inputs of the linear amplifiers for supplying the motor control voltage and phase inverter motor control voltage in a selective manner to each of the linear amplifiers and switching circuit control pulse generator for generating switching pulses based on the rotational pulse trains which are supplied to each of the switching circuits.