Focussed corona charger

Electricity: electrical systems and devices – Electric charging of objects or materials

Patent

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Details

361230, 361235, 355 3CH, 250324, G03G 1502, H01T 1900

Patent

active

047759151

ABSTRACT:
A corona charger includes a conductive electrode and a corona wire between the electrode and a receiver. A non-conductive shell about the wire is open toward the receiver. A voltage is periodically applied to the wire, whereby a corona charge is produced in the shell and the shell charges with the wire such that the corona charge is directed toward the receiver. A voltage is applied to the electrode of same sign but lagging the voltage applied to the wire such that the corona charge is accelerated by the electrode to the receiver when the voltage on the electrode approximates the voltage on the wire.

REFERENCES:
patent: 2701764 (1955-02-01), Carlson
patent: 3390266 (1968-06-01), Epping
patent: 3660656 (1972-05-01), Frank et al.
patent: 4053770 (1977-10-01), Tanaka et al.
patent: 4088892 (1978-05-01), Plumadore
patent: 4564282 (1986-01-01), Shenoy
patent: 4574326 (1986-03-01), Myochin et al.
patent: 4591713 (1986-05-01), Gundlach
patent: 4656356 (1987-04-01), Yoda et al.

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