SPEED CONTROLLER FOR DC MOTOR FOR PAPER TRANSPORT
Original Publication Date: 1981-Jun-30
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
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.