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:
May. 07, 1985
Filed:
Nov. 19, 1982
Nahum Guzik, Mountain View, CA (US);
Gennady Mangeym, San Jose, CA (US);
Other;
Abstract
A motor speed control circuit produces indexing pulses during each revolution of the motor. Each indexing pulse triggers the production of a predetermined pattern of timing pulses. The timing pulses are integrated. The result of the integration is a relatively constant level signal that controls the motor current. At the end of a predetermined pattern of pulses in the binary signal, the integrator input signal goes to one of two binary states and causes the integrator output voltage to ramp up or down, as the case may be, until another indexing pulse is received from the motor. The output of the integrator upon receipt of the indexing pulse controls the speed of the motor while another set of binary pulses are being integrated.