Quantum Energy Generator (QEG) Open Sourced (by HopeGirl)

[Farmhand]

Well, I made a good estimation the antenna capacitance it I think. Anyway here is a circuit sketch and a new picture of the setup
in case it might help anyone to see what's going on. The wave drawing for the ground potential/current is only a conceptual aid
I expect the wave would be very much damped before the 250 meter mark.  I got the 0.5 v p to p by scoping the ground stake for
the DUT and another stake at 5 meters distance from it. Signal was at circuit frequency and kinda sinusoidal, my portable nano
scope can't deal with HF very well and shows a triangular wave form instead of a sinus.

And an unrelated odd Lissajous pattern for curiosity caused by "harmonics", I can't find another that resembles it. 

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P.S I've replaced the circuit diagram with the modified one so it's last now.

[Farmhand]

I'm thinking about modifying the primary coil switching circuit so that I can measure the primary coil current and voltage as well as
the supply current. So I can use batteries and allow return currents oscillations, either to a capacitor near the coil or to the battery.

I've drawn a proposed arrangement and I'm only concerned with the "power" section, the signal section does have various
capacitors and such to damp unwanted oscillations.

I'm unsure if I need or want the inductor to act as a "filter" or part of a resonant charging element.

Any suggestions ? Basically the circuit now just has the 470 uF capacitor near the coil. And 20 nF across the switch.

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I've got a resonance seeking circuit I could try to set up, a kind of an "Armstrong oscillator" circuit. I like the manual tuning though.

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[MarkE]

Unless you have differential probes, you need to consider what you will use for your instrument common during your measurements.  You need to include consideration for whether or not your instrument common will also be a power supply common due to the green safety lead.

The logical place for a CSR is betwen the MOSFET source, and the rest of the circuit common that feeds the 100uF cap, pulse generator and MOSFET driver.

I do not see anything to limit the flyback voltage of your 10uH coil.  Is it coupled to the left hand coil?  If it isn't, then you need to think about how you would prefer to protect the MOSFET drain.

[TinselKoala]

All three of my main power supplies: Topward, Elenco and HP, have their + and - outputs isolated from chassis/line ground. There is a third banana jack for chassis ground and a strap that can be used to strap either positive or negative to chassis and line ground on the Topward and the HP. The Elenco also has a Chassis ground jack but its jacks aren't in the neat standard triangle on 3/4" centers so it can't be easily strapped. But I prefer using batteries on these circuits anyhow, just so there won't be any doubt about the nature of the input.

My Interstate F43 has an "isolation" feature that allows isolating the "negative" or BNC shields from the chassis ground. It has all these neat isolated bulkhead BNC connectors, and the switch. But it is really easy to forget during a complicated hookup and inadvertently connect the FG to a chassis ground when it shouldn't otta be. Like when using the FG's synch output to drive the external trigger of one of the scopes-- which of course have the BNC shields grounded back to their chassis and to the mains green wire. I have in my time created some mean groundloops through probe references and instrument chassis.

[TinselKoala]

http://www.youtube.com/watch?v=rtR63-ecUNo&list=PLFgoUhNvMLrow9cmljUZWLdHiE5hzl8c2

Gaahh... I just fed that audio into my own scope and it does make the same patterns! Not as clear of course but definitely, it survives the transcoding, the headphone jack, the scope probes... and it paints on my own screen!