Journal of Microwave Power and Electromagnetic Energy (JMPEE)
TITLE	A Novel Arc Detecting & Suppressing System for Radio Frequency Applicators [PDF]
AUTHORS	M.J. Clee and A.C. Metaxas 1995 30 2 71-80
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Abstract Industrial radio frequency processing is often hindered by arcing phenomena particularly in high power systems where localized overheating. micro-arcs and corona discharges can occur due to high electric field concentrations in the material being processed. Most arc detecting systems currently available require the existence of a dc path provided by the arc across the applicator or sample radiation emitted from the arc using light detectors. These techniques, however, typically have slow response times and do not provide adequate protection against micro-arcs on a surface of or inside the material. This paper describes a new technique for detecting arcs in radio frequency applicators, and describes an electronic circuit that can be used to interface the detector to new or existing equipment for suppressing arcs. A system for faster arc suppression in radio frequency applicators is also described. Key Words: Applicator, Arcing, Arc detection and suppression, MOSFET, Radio frequency processing.