G - Physics – 05 – F
Patent
G - Physics
05
F
G05F 3/08 (2006.01) B03C 3/68 (2006.01) H05F 3/06 (2006.01)
Patent
CA 2399497
A control circuit for an ionizer controls an output of at least one of a positive voltage direct current (DC) power supply (PS) and a negative voltage DC PS. Each PS is connected to at least one ionizing pin. The control circuit controls the output of the power supplies so as to cause a flow of positive and negative ions from the ionizer and directed towards a target. The control circuit includes a positive PS return current sense resistor that biases the negative voltage PS to decrease the output of the negative voltage PS when the current detected by the positive sense resistor increases and to increase the output of the negative voltage PS when the current detected by the positive sense resistor decreases. The control circuit includes a similar negative PS return current sense resistor and associated bias circuitry for controlling the negative voltage power supply.
Foo Ken S.
Jacobs Michael A.
Finlayson & Singlehurst
Illinois Tool Works Inc.
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