Plasma JET is based on the concept of displacement current. Even if there are two electrodes (cathod and anode separated by some distance, i.e., open circuit), circuit is completed through the dispalcement current. So, you have to operate at least with some pulse mode (~ few KHz). Also, your electrodes are separated by some dielectric materials.
Secondly, with DC power (or with rectified power) you have to design your jet from the point of view of electrical breakdown and operating pressure (Paschen curve will give the design concept) for this. But you have to use a very high voltage in case of APP jet.
So, everything depends on your purpose and application.
Dear Mr. Sahu, My point was not towards the type of power supply used in plasma jet rather I had queried about the discharge pattern like does it work nicely in only one particular configuration like center electrode positive or vice versa. If yes, then there is no use of AC supply of whatever frequency across the electrodes.