The construction and operation of atmospheric nonthermal plasma jet, ANPJ, are presented in this
work as well as the experimental investigations of its electrical parameters, the configuration of
plasma jet column and its temperature. The device is energized by a low-cost Neon power supply
of (10 kV, 30 mA, and 20 kHz) and the discharge takes place by using N2 gas with different flow
rates from 3 to 25 L/min and input voltage of 6 kV. Diagnostic techniques such as voltage divider,
Lissajous figure, image processing and thermometer are used. The electrical characteristics of
discharge at different flow rates of N2 gas such as discharge voltage, current, mean power, power
efficiency, and mean energy have been studied. The experimental results show that the maximum
plasma jet length of 14 mm is detected at flow rate of 12 L/min. The results of plasma jet (heavy
particles) temperature along the jet length show that jet plasma has approximately a room temperature
at the jet column end. The results of zero flow rate effect on the ANPJ operation show
damage in the Teflon insulator and a corrosion in the Aluminum electrodes.