ISOLATED HIGH VOLTAGE CONTROLLER
Original Publication Date: 1984-Dec-31
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
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.