Controlled emission static bar

Details Controlled emission static bar Controlled emission static bar

1982-07-21

1983-12-27

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Electric charge generating or conducting means

With specific power supply

361230, 250324, H01T 1900

Patent

active

044234627

ABSTRACT:
A controlled emission static eliminator system (wherein an A.C. high voltage is applied to the discharge electrodes of a static bar by way of a transformer) employs a biasing circuit in series with the primary of the transformer to control the amplitude and/or duration of the alternating potentials imposed on the corona discharge points. The biasing circuit includes a series-connected diode and variable resistance in one leg of a parallel network and a capacitor in the other leg. Selecting appropriate time constants for the resistance and capacitance will narrow the first half of the sine wave and broaden the second half to produce an excess of positive or negative ions, as desired, depending upon the direction of the diode. The ion emission can be controlled to yield an equal number of positive and negative ions or a predominance of ions of one polarity and can be accomplished regardless of whether the A.C. high voltage is directly connected or capacitively coupled to the points.

REFERENCES:
patent: 3714531 (1973-01-01), Takahashi

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