I am trying to maintain two different high DC voltages of same polarity (either positive or negative) between two parallel electrodes separated by 500 um inside the vacuum. However, what I found was, when I increase the voltage of one of the electrodes, the voltage on the another electrodes increases automatically, even when it is maintained at 0 V. This phenomena does not occur when one of the electrodes is positively connected and another is connected to ground or negative. This only occurs when both electrodes are connected with same polarity (electrode 1 +ve, electrode 2 +ve or Electrode 1 -ve, electrode 2 -ve). I think it is some kind of voltage coupling going on between two electrodes because of the capacitance between them. Please, help me to solve the voltage coupling problem.
Thank you
Try[1], if possible, to increase the (two parallel) electrodes' separation d (>>500 um, inside the vacuum); if there is no difference, then another[2] unseen capacitance[3] should be (more) responsible, the practical 'goal' for this technical[1] query.
1. Ask a local technician, before any action on the actual setup, as your 1st priority.
2. Check the capacitance' values (in the specs) of the two (different high) DC voltage sources. These might be 'the reason'.
3. A part from your (@Amar-Prasad-Gupta) quotation: "I think it is some kind of voltage coupling going on between two electrodes because of the capacitance between them.
Thanks Ioannis.
We have tried the experiments with increasing the electrodes separation and the result was the decrease in the rate of coupling. Example : with 500 um separation ; 1st electrode 4000V 2nd electrode 2950V (setting voltage was 1500 V) . with 1000 um separation ; 1st electrode 4000 V , 2nd electrode 2010V ( setting voltage was 1500 V). It would be great to know if someone could solve this problem without changing the electrodes separation.
Dear Amar,
about the test of the separation, d (parameter):
I was speaking in terms of the Capacitance (C-measurement), not, only, in terms of the Voltage (1500 V).
- Badges
- Science topic
- Similar topics
- Biological Science
- Bioecology
- Systems Ecology
- Landscape Ecology
- Connectivity