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COMMON CORONODE SUPPLY FOR MULTIPLE DICOROTRONS

IP.com Disclosure Number: IPCOM000024614D
Original Publication Date: 1981-Apr-30
Included in the Prior Art Database: 2004-Apr-02

Publishing Venue

Xerox Disclosure Journal

Abstract

In a xerographic copier employing dicorotrons, the power supply system can be simplified by combining coronode wire power requirements into a single power supply output. The power supply module for a dicorotron coronode wire consists of a controlled output level oscillator, constant current feedback control (including a corona current discriminator) and a high-voltage/high-frequency output trans-former. A single module may be used for several dicorotrons if the current feed back signals are summed and the same output voltage is applied to all the coronodes. Other options include (1) sensing the current for one coronode and slaving the other coronodes and (2) providing taps on the output transformer to allow different nominal operating levels for different dicorotrons.