Biasing arrangement for a corona discharge device

Details Biasing arrangement for a corona discharge device Biasing arrangement for a corona discharge device

1977-04-25

1978-07-11

Church, Craig E.

Radiant energy

Corona irradiation

250326, G03G 1500

Patent

active

041004116

ABSTRACT:
A biasing arrangement for a corona discharge device including a conductive shield partially surrounding a corona electrode comprising means for applying a first high D.C. potential to the wire and a second high D.C. potential to the shield, the potential difference between the wire and the shield being sufficiently small to substantially inhibit corona current. A high voltage pulse train is superimposed on the shield which periodically increases the potential difference between the wire and the shield to foster ion generation adjacent the wire. Between pulses, the shield is returned to the second potential to again inhibit further ion generation while concurrently permitting ion movement toward a surface to be charged rather than toward the shield itself. Pulse duration and repetition rate are selected to enhance the efficiency of the corona device.

REFERENCES:
patent: 3813547 (1974-05-01), Silverberg
patent: 3961193 (1976-06-01), Hudson

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