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Browse Prior Art Database

SPEED CONTROLLER FOR DC MOTOR FOR PAPER TRANSPORT

IP.com Disclosure Number: IPCOM000024619D
Original Publication Date: 1981-Jun-30
Included in the Prior Art Database: 2004-Apr-02

Publishing Venue

Xerox Disclosure Journal

Abstract

A speed control for a DC motor uses a photosensitive device on which falls a light beam from a beam splitter in the path of light from a lamp provided for other purposes, such as paper detection. The speed control beam is pulsed as a function of motor speed, as by impinging on an apertured belt or disc.