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ISOLATED HIGH VOLTAGE CONTROLLER

IP.com Disclosure Number: IPCOM000025352D
Original Publication Date: 1984-Dec-31
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

Opto-isolators may be used as isolation elements in high voltage controllers. Prior art teaches the use of an light emitting diode (LED) light dependent resistor (LDR) isolator wherein the LED is energized by an analog voltage. The use of two or four isolators in a totem pole or bridge configuration enables any output voltage between the positive and negative high voltage rails to be obtained. However, in the systems described only one element in the totem pole or two elements in the bridge are active at any time.