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Circuit to Efficiently drive a LED Display from higher voltages

IP.com Disclosure Number: IPCOM000015765D
Original Publication Date: 2002-Dec-12
Included in the Prior Art Database: 2003-Jun-21

Publishing Venue

IBM

Abstract

A circuit to efficiently drive an LED display from higher voltages using an inexpensive Pulse Width Modulation circuit which results in a low power dissipation as opposed to a resistor and a less expensive implementation than a switching regulator.