Hi all,

Well, I have not given up just yet.

I think I may have led every one on a wild goose chase with reversing top coil. I think this merely
mimicks what we should be achieving with the biasing magnets. Hence, all of got very few volts.

If you put things back to how they should be, then try this -

Is it possible that our friend, Romero is only human ?

Or is this just another misinterpretation from experiments by Garry.

If and only if it is convenient - flip all your biasing magnets and watch the output current rise.

Please remember, this may be an oddity with my setup only.

Aslo, note that I am using pinball machine coils and 12mm ferrite tubes - not, 6mm x 15mm rods.
because of these coils, the way I achieve high RPM is by either increasing the drive voltage or
paralleling the drive coils.

I now have a long weekend. The plan is to take the dynamo of the table and reconstruct Romero's
pre dynamo video that was sent to Clanzer.

Again, I do not want to send anyone on a wild goose chase, but if it is easy to do, please try the
magnet flip.

Regards, Garry

p.s. as I write this and am not greatly concered about my rig, I just shorted the output from the
FWBR double and show 400ma on my output side meter. the input side meter on left rear shows 120ma though the RPMs decrease rapidly. RPM before short = 1450

@bolt:

Please look at the attached drawing. Is this the "tuning" you talk about?

Greetings, Conrad

Quote from: freenergy850 on June 09, 2011, 08:43:11 PM
Hello everyone,
Been working on my replication but im having trouble with the driving circuit posted by romero. First time i spun it up it ran but transistor got really hot and eventually blew. Rebuilt the circuit and blew another transistor. Tried three times now to rebuild the same circuit with a tip32c instead of tip42c (had a few on hand, ran out of tip42) but cant get it running. Transistor heats instantly.

Can someone confirm that romero's circuit works as posted? I'm getting really frustrated with it. Can anyone recommend another circuit to drive it?

On a side note, just like to say excellent work going on here and thank you to everyone for sharing there findings! And of course thank you to romero!!

Change the 10k resistor to 20k
This circuit is the simplest you can have
If you killed some transistors already then check or replace the hall too.
I have abused this type of circuit and never killed a transistor or component in the circuit.
You can have much better circuits but for any simple experiment this is good enough also more components more power used...
Success!

Hi Romero,

Hope you are keeping well.

Is it possible that you could give us a few clues/hints for the coil shorting video given to Clanzer.

I am trying to undertand the black wires going from the pickup coil. where do they connect into
your driver circuit.

Kindest Regards, Penno

You only need to measure the current to start with not the voltage. So measure the current waveform with the scope across the resistor with the DC side of the bridge shorted out. If you have a calibrated 0.1 ohm resistor use that instead of 1 ohm or even put 10 off 1ohm in parallel to make a current shunt. This will improve tuning slightly but most of your coils should be several ohms in any case.

Look HERE to see waveforms and tuning instructions.

http://www.overunity.com/index.php?topic=3842.msg290354#msg290354

Some coils if perfectly matched will be very close on the waveform but mostly they are going to need to be tweaked. You see when the coil is shorted MOST of the current runs along the zero point with just a spiky symmetrical waveform top and bottom. This means the average current is kept very small versus time. There is a slight zero point offset this is due to the diodes in the bridge not operating at 0v but like 0.65v etc.

The current spike are 90 degrees out of phase with the voltage. This creates standing waves which supply real JOULES to the dump cap. After initial tuning and retuned into desired load you will see the same waveform over the AC pins of the bridge but ONLY after the tuning process has been completed.

As i said for YEARS see my old posts. RLC tuning to VARS leads to OU using standard RF applied techniques. There is no wizardry here or swamp gas just a different way of thinking. Once you mastered the muller you will see it can easy be done solid state with some time and money or more simple magnet window motor running at 20,000+ RPM.