That's actually a bus bar, it's zinc-plated copper and quite heavy. It will go on the wall inside the shop and serve as a common tie point for grounding experiments. I'm also a ham radio operator and my shop doubles as a ham shack so it will also do double duty as an RF ground for antennas and equipment. The ground plate is the old radiator I showed on the tailgate of my truck a few posts back, that's what will get buried. I still need to do some wire brushing and maybe an acid wash to get it as clean as possible (for a piece of old junk). Then I will make some of the ground enhancement mix using the chemicals I have left from the last time I dug an improved ground, and put that all around the grounding plate before burying it. The disturbed soil should have improved percolation and should get remoistened with every rain, or I can go out with a hose and water it if necessary.
The shop building has a standard 8 foot electrical code ground rod about 20 feet away from where the ground plate will go, so with two independent grounds I can use some measurements and analysis to get an idea of how good my ground is.
And yes, I am fully committed to this project, the project that's taken over my life. I have sacrificed a promising career and now more than one profitable business in order to have the opportunity to do this research. For most of the last ten years now, and almost exclusively for the last five or so, I really have done nothing else. I am either going to figure it out, or I'm going to die trying. Seeing as how I live without health insurance and have a number of health issues, this is not an idle threat. In the past, money has been a major obstacle since as we all know, R&D can be extremely expensive and most of us just have a hobby budget. But I invested in bitcoin early on, and now it's changed my life. I don't have enough money to go blowing it on frivolous stuff, but I can afford to buy what I need for the project now.
Thankfully transformer design is totally standard, off-the-shelf electrical engineering. Many textbooks and websites have all the information you need to do proper transformer design. Metglas mainly has two things: very high permeability, making it good for inductor designs, and very low core loss, making it good for transformers up to 100 KHz or so. I assume Don's use of metglas in that diagram was to capture the "magnetic waves" he's saying are coming from the back side of the capacitor. In this case the transformer would be acting somewhat like a guitar pickup, where the magnetic field around the transformer induces some current into the windings. For maximum sensitivity you'd probably just want a large number of turns around a core to see if you can get any results at all, this is one of Don's ideas I haven't personally spent any time experimenting with. Maybe as a proof of concept, just borrow the ferrite loopstick antenna from a salvaged AM radio, they come with windings already installed, usually of litz wire, or just wind a bunch of turns of something thin on it and see if there's a signal when near the capacitor.
I did manage to get a couple large metglas C-cores from ebay a while back, but the problem is that they didn't come with any bobbins to put the windings on! When you buy them from the manufacturer they are supposed to come with the bobbins. I have spent some time trying to design and fabricate something usable as a bobbin (paperboard works if you just want to throw a few turns of wire on it) but I haven't been really happy with anything I've come up with yet.
The shop building has a standard 8 foot electrical code ground rod about 20 feet away from where the ground plate will go, so with two independent grounds I can use some measurements and analysis to get an idea of how good my ground is.
And yes, I am fully committed to this project, the project that's taken over my life. I have sacrificed a promising career and now more than one profitable business in order to have the opportunity to do this research. For most of the last ten years now, and almost exclusively for the last five or so, I really have done nothing else. I am either going to figure it out, or I'm going to die trying. Seeing as how I live without health insurance and have a number of health issues, this is not an idle threat. In the past, money has been a major obstacle since as we all know, R&D can be extremely expensive and most of us just have a hobby budget. But I invested in bitcoin early on, and now it's changed my life. I don't have enough money to go blowing it on frivolous stuff, but I can afford to buy what I need for the project now.
Originally posted by Dwane
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I did manage to get a couple large metglas C-cores from ebay a while back, but the problem is that they didn't come with any bobbins to put the windings on! When you buy them from the manufacturer they are supposed to come with the bobbins. I have spent some time trying to design and fabricate something usable as a bobbin (paperboard works if you just want to throw a few turns of wire on it) but I haven't been really happy with anything I've come up with yet.
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