There has been quite a bit of discussion here on other threads about the Thunderbolt Generator, an invention of an Australian named Malcolm Bendall, which has been described as a plasmoid generator. It is a new topic to me and I have been trying to understand what it is all about. There are a lot of videos and online posts discussing it, but it has been hard for me to get a concise description.
I came across this video where a diagram was posted and thought it was the most useful thing that I had found so far.
The person explaining the diagram states that pre-ionized air goes into a diffuser/bubbler which contains tap water. The bubbles cavitate and create mini-plasmoids. Then they go into the Thunderstorm generator or vortex tube which has a special geometry. Then the plasmoids go into a conventional engine (seems like a conventional ICE engine) which can generate electricity or mechanical power. The exhaust apparently comes out clean and has some special properties.
In a nutshell that is my takeaway, perhaps other readers here can correct me if I have made any mistakes in my understanding.