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Overunity Machines Forum



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

Started by madddann, March 26, 2014, 09:42:27 PM

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0 Members and 92 Guests are viewing this topic.

TinselKoala

Quote from: Groundloop on September 21, 2014, 07:54:26 AM
TK,

Can you post the circuit drawing for your micro QEG?
(Or a link to where you posted the drawing).

GL.
The circuit, and simulations of it, have been posted several times in this thread and in other threads. It is a basic Royer/Mazilli oscillator with some specific component values. Here is one version of the schematic that I have posted.
The mosfets I am currently using are IRF3205. The Z44N will work, and I have also tested it with plain old IRF830 and IRFP260N. Less efficient with those but it does work. The best ones to use are naturally the ones with lowest Rdss and highest current capacity. 100 V is enough if the supply voltage is kept below 14V.
The diodes should be fast, Schottky or UF rectifiers. I'm getting away with the 1n4148 type here because this circuit isn't stressed very much but for higher power versions you might want to use other diodes here. I actually went to UF4007 diodes for the driver of TinselKoil VII, which cured my mosfet heating problems in that circuit.
The Gate resistors must be 3 Watt but the value can vary somewhat from 100R. The 10k Gate pulldowns can be 1/4 W. The chokes should be capable of handling 6-8 amps continuously; I have used 60 to 120 microHenry values; the present MicroQEG uses Radio Shack stock 100 uH choke ferrite cores that I stripped and rewound with heavier wire to the same inductance. If the choke overheats and shorts, this is what blows mosfets.
The "Output loop" of the MicroQEG is a 6-turn Tesla bifilar-wound coil about 3 1/4 inches in diameter of heavy solid copper wire. It will also work with a straight solenoidal coil of the same dimensions. Do not operate the circuit without a coil of some kind connected, otherwise you will blow your mosfets. Also don't ramp up supply power slowly, just switch it on to 12 volts, because the circuit may not start oscillating with the slow ramp up, and this too will blow a mosfet.
Be careful, because the circuit actually will still work, partially, if one mosfet is blown. If everything is set up properly (symmetry, heavy high current paths) the mosfets do not run hot and don't even need heatsinks. The most important part of the circuit is the capacitor, it should be built up out of smaller values, equal, in parallel and should have a big voltage margin; I am using 10 nF, 500 volt precision poly film caps, six in parallel to make about 60 nF (64.5 nf Measured).
I have also included a "template" for the surface mount circuitboard I used. (The loopstick at top left in the last photo isn't used in the "ordinary" MicroQEG.) The wiring for the HV Receptor and other items used in the demonstrations should be clear from the videos and your general knowledge of such circuits.


TinselKoala

Note: For the above version I purposely did not use etching for the circuit board. I simply removed the straight lines of copper with a hacksaw blade. For a nicer circuit board layout, one of my wireless power transmitters has this:
(Chokes, and output loop connectors, not yet installed.)

Groundloop

TK,

Thank you for posting drawing and information on your micro QEG.

You newest board look great.

Regrads,
GL.

Angelic


Pirate88179

See the Joule thief Circuit Diagrams, etc. topic here:
http://www.overunity.com/index.php?topic=6942.0;topicseen