High duty cycle AC corona charger

Details High duty cycle AC corona charger High duty cycle AC corona charger

1996-03-11

1997-06-24

Pendegrass, Joan H.

Electricity: electrical systems and devices

Electric charge generating or conducting means

With specific power supply

399 89, G03G 1502

Patent

active

056422547

ABSTRACT:
This invention pertains to an AC charger (10) in which an AC voltage waveform applied to a corona wires (12) has a duty cycle of between 50% and 90%. This increases the efficiency of the charger without increasing the signal-to-noise ratio. In one embodiment, the AC voltage waveform is asymmetric.

REFERENCES:
patent: 3699335 (1972-10-01), Giaimo, Jr.
patent: 4038593 (1977-07-01), Quinn
patent: 4166690 (1979-09-01), Bacon et al.
patent: 4526848 (1985-07-01), Okada et al
patent: 4731633 (1988-03-01), Foley et al.
patent: 4910400 (1990-03-01), Walgrove
patent: 5539501 (1996-07-01), Yu et al.

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