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

[MarkE]

No Mark the flyback is taken care of, the coil discharges into the 20 nF cap across the switch then reflects back to the
supply capacitor. It can run all by itself with no loads.  That's why I get a 40 + volt lump from a 12.5 volt supply. 

I would almost bet me leftie that the primary has a sine wave on it or close to a sine wave.

The CSR between the mosfet source and circuit ground will only give the current through the mosfet and not the coil discharge
current.

Yes, but that is the price of only having single ended equipment that doesn't float.

Only a CSR between the coil and the mosfet drain will track the current through the coil and back I think, not sure about
how to get both the voltage across the coil and the current through and back from the 20 nF capacitor. 20 nF in series with 330 uF
is not much different to 20 nF itself.

The issue is that the voltages you wish to measure do not reference the power supply common.  Depending on how your power supply and oscilloscope are grounded you can easily create loops through the green safety wires that will fry your circuit and/or your scope if you connect the black ground clips of your scope probes anywhere other than the power supply common.  If you have differential probes and keep them within their common mode range then the only limitation will be common mode rejection limited accuracy.

The green safety lead to my tanks you mean ? They are isolated from the supply circuit by 15 to 20 mm at the least. And I think
the DC output of the Power supply is isolated. I could use a good battery as a supply do take the measurements, if I let it run for
some time the battery voltage will stabilize pretty much and I can re-tune.

Or you can regulate the battery output.  The message here is to diagram and verify where your equipment commons connect so that you don't fry anything.

I can just remove the green safety lead to take measurements on the tanks. But it makes no real difference, I don't think.

Again this depends on how your equipment is configured.  There are lots of people who have gotten away with disconnecting the green safety wires when measuring.  In a nanny state world that is not something anyone can recommend to you because if it goes wrong you can get a shock and/or damage your equipment with ESD.

I might just add some timing capacitance to the plse generator so I can widen the pulse width a bit to begin with, and add a
FR302 diode to the input + rail from the supply.

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[Farmhand]

OK I think I got all that. I'll make up a proper schematic so I can show better the scope ground and probe placement. And change
the indicated placement on the same drawing.

Thanks

P.S. The power supply has a transformer, and I measured over 10 Megaohms between the scope ground and each DC positive
and negative rail, also my scope has even more resistance to the power supply, might be faulty (have to check it),  my ground
shows a large resistance to the scope ground as well. Maybe the house ground has a high resistance I think mine is good
unless it has a connection fault somewhere. I'll do some checking of the grounds they should have a fairly low resistance to
each other.

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[Farmhand]

OK here is a base Schematic of how I think the circuit should be configured so as to take power measurements from all coils with
the scope. all grounds to the same ground point. My ground stake is galvanized coated steel and the house ground is copper so
they form an Earth battery and there is about .6 volt DC between them, my stake measures negative with respect to the house
ground. but wetting the house ground with waste fluid (pee)    removed most of the AC noise on the grounds. If I want to
measure the DC input power I can smooth it and use a DMM or do it separately. I want the scope the voltage and current through
the primary coil so I can see the effect of loads on the supply voltage, current, phase and if there is return currents or not ect.

Nothing much has values, yet. being tuned circuit it can be made to operate at whatever frequency is required if the correct
components are chosen and tuned.

All resistors shown are CSR's and I will need to guy them. Any suggestions ? I guess I need at least 2.5 Watt CSR's and 0.1 Ohm.
Other values I would use if there is a reason. I find 0.1 Ohm has little effect on the circuit.

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[MarkE]

If you are running less than 1MHz then the WNExxx Aryton Perry wound resistors from Ohmite are pretty good.  They are less than $1.00 each.  Pick the largest resistance value that won't mess up your circuit.  To do better than these you need to go to a non-inductive four terminal resistor.

http://www.digikey.com/product-search/en/resistors/through-hole-resistors/66690?k=wne

[Farmhand]

Awesome thanks Mark, I'll endeavor to get some of those or similar in 0.1 Ohm - 0.5 Ohm and 1 Ohm for different applications, I
think the 0.1 Ohms is a bit low for the LV measurements. And I should get a few non inductive load resistors, maybe I can make
sliding - variable ones with my rectangle cross section carbon arc gouging rods.    They are about 300 mm long but they don't
have much resistance each due to how thick they are I think. For the LV load I think I would want about 5 to 20 Ohms maybe
more.

What if I wind a non inductive high resistance coil ? And carefully tune any inductance out ? I guess it will still have capacitance then. 

Anyway I think the setup is a fairly good HF AC generator for experimenting and I'll make some better coils, I will try to replicate
the frequency of the setup with single strand wound coils of thicker wire and make it so I can move all the coils with respect to
each other as well as set up some kind of a mount board with mounting for the coils so finer adjustments can be made to the
coupling ect. and fastened (locked in place).

I can always change to using a TK primary driver circuit or a H Bridge or something later. I've got a H bridge prototyped using
IRS2110 Hi-Lo mosfet drivers. Just need to work out the details for 300 kHz and make some boards and so forth.

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