Noises in my current waveform!

[takitook]

Dear friends
I would like to take your opinions.
In my new plasma focus device ( I made it for my PHD)
I have a problem of noises on both current from rogovsky coil and magnetic probe signal, but when it is self discharging most of noises disappear. So I think it is from the trrigering circuit ( made manually).
I f you could help me how I can solve this problem, I will be thankful a lot for you
Best wishes
Takitook

[Rezwan]

Hello Takitook,

No need to post 2 separate topics for this. I deleted your other one.

Also, sounds like you’re a plasma scientist, the kind of person we’ll be setting up another forum for. Can you give us some info about yourself and the program you work for? Go to your control panel and add a picture/bio/other info (open various personal settings on the left). That link is always in the top line of the forum pages, FYI.

The idea is that scientists working directly on a plasma focus and related lab folk will get a different classification and posting privileges on this forum, and on an additional forum we’ll be setting up for the dpf community.

Also, we have to recruit more of them to this site to have just this type of conversation that you started.

[Lerner]

We are working on the same problem! Hope to get you an answer of what works in a week or so.

In the meantime, is the ground for your instruments separated form the ground for the DPF?

[takitook]

thank you a lot for your reply
I thought all people ignoring me, because I am new
The problem became less when I increased the charging voltage ( 13 kV insted of 10 kV)
I use 2 capacitors of 10 micro farad each.
and He or Ar gas at pressure of one Torr.
The trigger is without earth it is floating
But the main problem now is that the magnetic probe signale is very strange it is like one peak and end with saturation,
The same shape is present at any charging voltage or pressure for both gases at any distance from the inner electrode.
May be we need to increase the power, by increasing one capacitor, or I do not know may be there is an error in the design.
for the trigger it is floating , no earth.
Best wishes

[Phil’s Dad]

takitook wrote: thank you a lot for your reply
I thought all people ignoring me, because I am new

Welcome takitook

No-one is ignored here – it’s just that some questions can only be answered by the very best.
And because they are the best, they are the busiest.

Keep asking the hard ones 😉

[takitook]

Thank you a lot for your reply
and best wishes for you all
Takitook

[Aeronaut]

Phil’s Dad wrote:

thank you a lot for your reply
I thought all people ignoring me, because I am new

Welcome takitook

No-one is ignored here – it’s just that some questions can only be answered by the very best.
And because they are the best, they are the busiest.

Keep asking the hard ones 😉

Thanx for opening this topic, takitook. I’ve been wondering where the line is drawn between a DPF and the FF, and the ability to run engineering programs in parallel with LPP.

[takitook]

I always dreamed with finding a channel to communicate with people working in plasma focus and sharing experiences and problems to learn more things, I did that before by mails , and I learned a lot from that.

[Author]

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