Dielectric Barrier Discharge Plasma Discharge Circuit

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SUMMARY

The discussion centers on the challenges faced by a Mechanical Engineering student, Ho, in developing a high voltage discharge circuit for Dielectric Barrier Discharge (DBD) plasma. The student reports that increasing the distance between electrodes raises air resistance from 33.3T ohms to 50T ohms and decreases air capacitance from 10.68fF to 6fF, yet the discharge current remains constant at 1.571kA. The student seeks clarification on whether the issue lies within the circuit configuration or the measurement method using an oscilloscope.

PREREQUISITES
  • Understanding of Dielectric Barrier Discharge (DBD) principles
  • Knowledge of high voltage discharge circuits
  • Familiarity with oscilloscope operation and measurement techniques
  • Basic concepts of capacitance and resistance in electrical circuits
NEXT STEPS
  • Research the effects of electrode distance on discharge characteristics in DBD systems
  • Learn about circuit configuration best practices for high voltage applications
  • Investigate advanced oscilloscope measurement techniques for high current applications
  • Explore simulation tools for modeling DBD plasma discharge circuits
USEFUL FOR

This discussion is beneficial for students in electrical and mechanical engineering, researchers in plasma physics, and engineers working on high voltage discharge applications.

cyho
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To anyone that can help me,

Hello everyone. I am student from Mechanical Engineering and I am very new to electronic field. I currently doing my final year project which is developing the high voltage discharge circuit for the DBD plasma. The middle electronic elements is the representative of the two electrodes (the main discharge element) in electronic form.

The problem I facing is when I try to increase the distance of electrodes which mean the air resistance increase(let say from 33.3T ohms to 50T ohms) and air capacitance decrease (10.68fF to 6fF), The discharge current across the capacitor on the right which is C2 still remain the same which is 1.571kA(this is for first value 33.3T ohms and 10.68fF).

Is that my circuit is wrong or the configuration of my circuit is wrong? Or is due to the measurement method (I using oscilloscpoe to measure it across the capacitor with the help of probe)?

Thanks in advanced for any help that you all give me, I am appreciate it.

Regards
Ho
 
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The schematic diagram is as below. Thanks.
 

Attachments

  • DBD Plasma Discharge Circuit.jpg
    DBD Plasma Discharge Circuit.jpg
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