Continuously balanced pulse-DC ioniser to minimise the offset voltage

In our previous work, the AC type of ionisers was employed to demonstrate a prospective theory obtained by numerical simulations in which continuously emitting quasi-neutralised positive and negative ions from corona ionisers can transport ions effectively to a charged object and yield zero offset v...

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Bibliographic Details
Published in:Journal of electrostatics 2016-02, Vol.79, p.16-19
Main Authors: Ohsawa, A., Nomura, N.
Format: Article
Language:English
Subjects:
Balancing
Charge neutralisation
Charging
Corona ioniser
Electric potential
Electronic circuits
Ion emission
Offset voltage
Offsets
Pulse-DC ioniser
Transport
Voltage
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Summary:In our previous work, the AC type of ionisers was employed to demonstrate a prospective theory obtained by numerical simulations in which continuously emitting quasi-neutralised positive and negative ions from corona ionisers can transport ions effectively to a charged object and yield zero offset voltage. In this paper, we show that this can also be applied to pulse-DC ionisers, resulting in significant improvements in the offset voltage as well as charge-decay times. In addition, we present an implementation method with an electronic circuit design to create such an ion emission from a pulse-DC ioniser. [Display omitted] •A theory for minimising the offset voltage is applied to a pulse-DC ioniser.•Reversing and non-reversing square-wave needles attain continuously balanced ions.•The continuous emission of quasi-neutralised ions can minimise the offset voltage.•Such emission can also transport ions effectively, resulting in faster charge decays.
ISSN:0304-3886
1873-5738
DOI:10.1016/j.elstat.2015.11.005