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Dynamic Voltage Change Sensing Circuit Useful for Paper on Drum Detection

IP.com Disclosure Number: IPCOM000053962D
Original Publication Date: 1980-Dec-01
Included in the Prior Art Database: 2005-Feb-12

Publishing Venue

IBM

Related People

Authors:
Champion, JR Pries, RW [+details]

Abstract

A voltage source to be monitored for substantial and rapid changes is sensed by an operational amplifier, coupled directly on one side to the voltage source, and on the other to a reference voltage storing capacitor network. This circuit is particularly useful for providing paper-on-drum (POD) detection as in copier/duplicator environments.