COLD PLASMA - From a 9 Volt battery??? (Part 2)
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- Опубликовано: 9 сен 2024
- In this video I build a simple switched mode power supply (designed in the previous video) that's able to convert 9 V from a battery into several thousand volts, sufficent to generate a cold plasma 'jet'.
Hey, this is cool! Did you try any other gases? Doesn’t work with just air?
I didn’t, but for sure it would work in Helium and Neon (although both are too expensive to try these days!). Air might work in this configuration, but not with this power supply, it would need much higher voltages. Thanks for watching!!
@@thecircuithelper Interesting, thanks!
Great ! Do you use a quartz tube ?
In the video it is quartz, but it doesn’t need to be. When using helium almost any dielectric material will do (normal glass, even the tube from a plastic pen 🤓). This isn’t the case with other gases, Argon is hotter, any glass or ceramic would be fine, maybe not plastic!
Thank you ! 😊
I tried a zvs circuit with a flyback, positive inside and negative outside, and it broke the glass, then I tried like you with two rings of nickel around the glass tube, and it broke the glass too. I used argon and argon/co2 (80/20). The only thing that works is with a Tesla coil with positive inside the glass tube, but there is a lot of electric arc, that’s not a smooth flame. I can only drive my Tesla coil at 50khz. Do you have any advices ?
You’ve a few things going against you there! The co2 addition massively increases temperature, you’d probably be fine if you just used argon. Also, the frequency of operation has an impact on temperature, the lower the better, but things compositions is likely to be the bigger factor in your case. Good luck!
Thank you !
I bought two quartz tubes to try, and i go back to argon only 😉
Great, good luck with it! Let me know how you get on….
Hi, I am trying to build the circuit you provided and would like to ask if you could provide more information or model numbers for high-voltage coils (ignition coils). Thank you.
Hi, almost any car ignition coil will get you started, specific model number etc isn’t important. I’ll included a link to a similar transformer to the one I used below. As for the other components, the particular mosfets are not critical as long as the are n-type and their voltage rating (Vgs) is a higher than the maximum voltage you intend to apply.
Good luck with the circuit and thanks for watching!!
Here’s the link….
a.aliexpress.com/_ExS6YGH
@@thecircuithelper Hello, thank you for your reply. I have only completed the steps up to 43 minutes in the video,
so I would like to ask:
1. After 43 minutes in the video, what is the function of that black wire? Where is it connected?
2. What are the inner and outer dimensions of the quartz tube?
3. What is the flow rate of the gas?
Thank you very much!
Sorry, only just saw this question! So, if the voltage is high enough then you really only need one electrode on the outside of the tube, the circuit is completed by capacitively coupling to nearby ground. However, in this case the voltage provided by the transformer is close to the breakdown voltage so it’s hard to ignite and sustain the plasma. The black wire is just a ground, so by putting a second, grounded, electrode on the tube it makes it easier to generate the plasma.
For the size of the tube I don’t remember, but 3-4 mm is probably optimal; too small and it’s difficult to ignite plasma and too large is also difficult because it needs a lot of gas. Tube diameter and gas flow are linked, you want to get a nice laminar flow from the tube. In the video it was something like 1-2 litres per minute.