Circuit for displaying the relative voltage at the output electrode of an electrostatically aided coating material atomizer
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United States of America Patent
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Apr 11, 2017
Grant Date -
Oct 23, 2014
app pub date -
Jul 1, 2014
filing date -
Mar 10, 2008
priority date (Note) -
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Abstract
A coating dispensing device includes a trigger assembly for actuating the coating dispensing device to dispense coating material and a nozzle through which the coating material is dispensed. The coating dispensing device further includes a source of voltage and a voltage multiplier for multiplying the voltage. The voltage multiplier is coupled to the source. An output terminal of the voltage multiplier is charged to a high-magnitude electrostatic potential and is adapted to charge coating material as the coating material is dispensed from the dispensing device. The coating dispensing device further includes a circuit for providing a visual indication of the voltage at the output terminal. The circuit for providing a visual indication of the voltage at the output terminal comprises a first impedance across which a portion of the voltage at the output terminal appears and an amplifier. The output terminal of the amplifier is coupled to a light source for providing the visual indication of the voltage at the output terminal of the voltage multiplier.
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