Recent content by Beekeeper

Yeah true. The Arc Pulse Generator is a bit of black box which makes it hard. I were to learn more or tinker with one it would be the 15kV one which clearly you can see what is going on.

I had an idea, I could add an additional spark gap but in air in series with the spark gap in the water. This way the Arc Pulse Generator would have some time to charge up as there would be an open circuit in the air and then it would arc in both the air and in water. I experimented with this...

Thanks @sophiecentaur that is good advice. But I am still not sure how to safely measure the volts across the spark gap. I have seen devices that can measure high voltages on CRTs but I am not sure about those either, I assume they for for DC and this would be an AC output. Thanks.

800KV-1000KV as per these specs Yeah probably, both producing high voltage sparks and cavitation bubbles. I will need to read up on these. Ah, this makes sense, thank you! If the internal capacitors cannot charge then yes now I can see it will never build up enough potential between the...

I operate it at 4V as that was the device instructions. The power supply provides 2A. That is the best explanation of the squealing I have heard. I also notice a tiny ripple on the surface of the water where the electrodes are. So would that be the dissolved air causing that?

Yeah that is what I am trying to do, although I am not using high voltage cable, just the enameled copper wire. The wire looks the same gauge as the one provided so I thought it would work. Yeah I thought about that. I would like to understand why it is not working now before I move on to...

I am not sure I would have to destroy the device to check. In the video Great Scott did, he measured pulses in the 16kV version to be around 19kHz. He then reversed engineered it and made a couple of his own versions of the device, I think the most poweful one ran at around 80kHz. This might be...

Yeah I thought about that. I had better success with smaller tips so might try that again. Thanks for the link. Yeah most of those are behind a paywall. This was the paper I think I found earlier, more complicated setup but looks safer. It requires a 60V PSU at 3A. Yeah I am trying my best to...

Thanks for your reply, I am using electrical arcs because they are cheap and "easy" to generate (easy is actually not so easy!). I would like to be able to generate bubbles at multiple and specific locations and so using other methods (laser etc) I think would be more difficult and expensive...

Wow, thanks for all your replies! I been busy last few days so I did not expect all these responses when I got back to this so thanks. I found some carbon rods on ebay, so hope to test in a day or so. In the meantime I tried out some graphite rods (just some mechanical pencil pacer leads)...

Ok thanks! Sounds plauseable and thanks for the suggestion to use carbon rods instead. I will give that a try.

Hi, I am trying to do some experiments with cavitation bubbles by generating a spark under water however I am having some trouble and was wondering if anyone would be able to help or offer some advice. The problem I am having is I cannot generate the spark consistently. I place the electrodes...

Thanks for your reply. I have been wondering for a while if it was working but simply the glow was too dim to be noticed by the naked eye. I have tried taking a photo with a long exposure as suggested however have been unsuccessful capturing any glow. Admittedly the camera I am using is not...

Hi, I am working on a sonoluminescence experiment and am having trouble with it. The problem is that although I can trap a bubble, I cannot get it to glow. I am following the same procedure described by 'The Thought Emporium' and you can see a video about it here: . In a nutshell the procedure...