Graham Gunderson's Energy conference presentation Most impressive and mysterious

[vasik041]

@ Vasik
seems almost a lifetime of investigation ?, and a very simple concept .
have you started a thread here for this work / investigation ?

Not a lifetime, but more than 10 years now
I haven't started thread here. When people learn that energy from such device be in range of milliwats, nobody want investigate it anymore...

[Vortex1]

Not a lifetime, but more than 10 years now
I haven't started thread here. When people learn that energy from such device be in range of milliwats, nobody want investigate it anymore...

Harold Aspden and John Strachan put together a piezo-capacitor based device that put out respectable power levels from small temperature differences. Not quite the same, but Harold Aspden did some research along the lines you are investigating. Cyril Smith also wrote an interesting paper.

[Spokane1]

Dear All,

Here is another implementation (Bare Bones) of a Logic controller for the Gunderson Device. This one uses 100K trim pots and 1nF timing capacitors. It also gives a wide range of control over the timing parameters. I used 74LS123 and a 7414 (obsolete). The newer HC CMOS versions should give even better performance and can run at a higher voltage. This arrangement appears to have no starting problems.

What is missing are the trim pot saver resistors (typically 200 Ohm), more bypass capacitors, the push button switches that Graham used (for testing?) and the extra wiring shields around the ends of the IC's (see Graham's photo to see how this was done).  I don't know if any of this extra stuff is needed since the fast transition times are controlled by the Power MOSFET drivers.

It appears to me that all of the timing parameters in this sub-circuit are manually controlled. I thought there would be some logic derived control signals, but apparently not.

Many thanks to TinselKoala and k4zep for the development of this circuit.

Up next. The development of an LTSpice VII simulation to see how those timing pulses control the H-Bridge to generate that discontinuous 2/3's sine wave excitation input.

Spokane1

[tinman]

But.... in Gunderson's demonstration, isn't the "output power" measured at the bulb, rather than at the output of the transformer? The transformer output, as I understand it, is being fed through the synchronous rectifier and into a large capacitor bank before it reaches the bulb.

So how's this: If you want to only include the power at the transformer input as "input"... then let's just only include the power directly at the transformer output as "output". Fair enough?  Just disconnect everything downstream of the transformer output itself and measure the output power directly at that point. This will eliminate any possible contributions to the output measurement that may come from the synchronous diode arrangement and its power supply, pre-charged capacitors, etc.

As far as i know (or can work out),is the synchronous rectifier is self triggered from the output side of the transformer--as per Itsu's schematic at OUR. Not to sure on that one though,as i lost interest
when you discovered the current inputs being bypassed on the Clarke-Hess power analyzer.

We have both built devices that show an !apparent! 0 watt input TK,but on all occasions it is only measurement error,or incorrect measurement point's.

The only way to gain an accurate yes or no to GGs OU transformer,is to build it,achieve the same result's,and then work out where he went wrong with his power measurements.


Brad

[ramset]

Tinman quote
"" i lost interest
when you discovered the current inputs being bypassed on the Clarke-Hess power analyzer.""
end Quote

Poynt mentioned this disconnect early on in that thread and it is a possibility that there was or is a reason for that "photo" based on what is being said By Graham at the time ...??
[aside from the claims that leaving out current measurement yields OU very quickly there could be a very good reason ??]

the DVD of the presentation will hopefully have an explanation of these connections or lack thereof  as the talk unfolds.
we shall see ?

respectfully
Chet K