Browse Prior Art Database

BROADBAND EME SUPPRESSION IN DICOROTRON DICORONODE DISTRIBUTION

IP.com Disclosure Number: IPCOM000025976D
Original Publication Date: 1989-Jun-30
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

The power distribution system for the coronodes of corona devices provides antenna area for added emissions of unwanted radiation. The corona provides an energy source of broad band nature and the coronodes and distribution system provide possible resonant lengths producing unwanted wavelengths of EME. In the use of dicorotrons, the power to the coronodes (dicoronodes) is particularly large compared to DC corona devices. The potentials used are quite large and by necessity are AC at frequencies quite high in the acoustic spectrum. That acoustic frequency provides a tell tale indication on the EME components from this source. Since the regulatory rules governing the EME have limits usually higher at higher frequencies, one means of solution for non compliance would be to raise the frequency of these emissions and dissipate some of the power as heat. One such means is to add resistance to the distribution system as lumped resistors or a resistance wire (distributed resistance). Lumped resistances have been tried successfully to reduce EME levels and break up the resonant elements.