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Author Topic: Homopolar Generators (N-Machine) by Bruce de Palma  (Read 279310 times)

Offline scotty1

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #15 on: July 09, 2006, 09:09:22 AM »
Yes..that is Matt....we share a web site together...
Here is my latest addition to it
Hope you like it  ;D   You will need to turn up your volume...sorry about that.

Offline z_p_e

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #16 on: July 09, 2006, 06:25:25 PM »

Very interesting stuff on your website. There doesn't seem to be much in the way of descriptions however, especially about the video clips of your experiments.

Was there a magnet on the ruler in the clip showing intermittent lighting of the LED? What was the setup?

Do you have a schematic of your PMH, and of the induction experiment? Why was there an iron wire winding on the coil as well?


Offline gyulasun

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #17 on: July 10, 2006, 12:44:34 AM »
Hi Scotty,

Thanks for the very interesting postings indeed. Got questions too:

1) Does the U shaped core of your PMH become perpetually magnetized after doing some tests with it? Would you check it? (I mean the U shape core may become kinda horseshoe magnet if the core is able to keep magnetism.)
2) This U shaped core is a normal soft iron rod?
3) The coils on the U shaped core are wound with normal enamelled copper wire, right? No iron wire on it?
4) Regarding your PMH: you close the U shaped core with the laminated keeper, then switch on the electric current with polarities shown in your picture, then you switch off the current and the keeper remains at the ends of the U shaped core, what is more the keeper needs outside mechanical energy to be separated from the U core?  Is that all correct I understand?

Maybe too many questions, sorry for that.


Offline scotty1

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #18 on: July 10, 2006, 02:10:22 AM »
Ok...with the Led on the ruler...the ruler was sitting on my PMH as it was running my no keeper..just an electromagnet pulsing alternately, but only slowly, maybe 3htz....
The schematic of the PMH is on our site....
My U bar is mild steel so it does retain magnetism, but it goes away if i leave it for a week or so.
Coils are 1500 turns of 16g copper enameled wire...
Once the keeper is locked on, yes, it needs much mechanical force to pull it off..if you pull it straight off...if you twist it, it takes less force of course.
When the magnets go in the PMH from the battery, then they start to orbit, and so long as the orbit is not broken, they will never stop. When the keeper is pulled off, those magnets which came out of the battery will come out of the coils and can be used for other purposes.....even after one year.....
The induction test is a trick i learn't......I've put up a drawing with the clip now!!!
you must remember that the magnets come out of a wire both above and below...if you have a conductor there.....magnets run better in iron than copper...
You see in that test i got 14v, but with a smaller coil arrangement i get less. This would mean with a bigger setup i could get more....
Whatever polarity of magnets you send out..the other kind is coming back to you.
It is similar to Tesla's transmitter....he said he could send a single polarity to the stepup  coil via the primary...When those few primary windings are pulsed then the magnets come out of each side of the wire and effectivley divide the secondary into 2 polarities...1/2 going to ground the other in the air...when divided in this way the magnets need a path for closure of the loop, and will gain pulling power as the opposite magnets come towards them...because the winding in your car coil is thin, the magnets cannot pass through with force, so they use speed to run in the wire....In the case of Tesla, the magnets must go around the Earth for closure, and did so with great speed.
470,000 kilometers per second......faster than light  ;)
« Last Edit: July 10, 2006, 05:31:34 AM by scotty1 »

Offline gyulasun

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #19 on: July 10, 2006, 10:08:51 AM »
Hi Scotty,

Thanks for your replies, especially for the drawing.

I have some more questions because I find your tests interesting:

1) Have you tried loading the 14V output DC voltage with a small incandescent torch lamp or any similar load? I am affraid of you are getting microampere currents only...  I mean loading the 14V both with the 9V supply + wave gen on and then off.  The best would be if you would pull out the 9V supply completely from the mains and then check for the loadability of the 14V.  I have often been tricked by the mains + earth leakage somehow...

2) Regarding the U bar, you say it retains magnetism and goes away only in a week or so: Doesn't it mean that you "simply" made a temporary horseshoe magnet from the mild steel U bar by switching on the current into the 2 x 1500 turns of copper wire and this explains why a mechanical force is needed for the locked keeper to separate? What is the "extra catch" here?

Many thanks again for sharing your findings.


Offline scotty1

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #20 on: July 11, 2006, 08:28:18 AM » see i's a trick i learn't....
All the voltage is from the mains gremlins.....they get into all my tests so i thought i'd show people how it can run a small load like LED but that's all...
I do see however that i could induce alot more with a good setup, and store the energy.
The main test i was doing was with the coil with 3 windings.....In a normal coil with an iron core, the core only gets 1/2 of the magnets it could get from the coil wire..the other 1/2 is wasted as it goes on the outside of the coil wire...
The (pmh) only has an extra catch if you believe that there is 2 magnetic particles that govern all matter......
"All that has to be done is to start the North and South pole individual magnets in an orbit and they will never stop" Edward Leedskalnin.. "It demonstrates how all magnets are made" E.L  "It (the pmh) has little power but could be made stronger by making bigger dimensions" E.L....
"U shaped magnets have a broken orbit, but under the proper conditions, it is permanent." E.L


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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #21 on: July 15, 2006, 01:50:04 PM »

Did anyone try putting two perpetual motion holders together and energize them at the same time?


Offline Neologic

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #22 on: July 24, 2006, 11:59:08 PM »
A previous post by someone who visited Bruce said that the "N" machine was a 'dead horse' and did not achieve over unity.

Bruce claimed that it was possible to achieve over unity with the "N" machine. Here is a quote from a popular site:
"On the basis of his above discoveries, dePalma invented his 'N-Machine', which has over 330% efficiency, i.e. it produced 230% of free energy, in independent tests!"

I spent about a week with Bruce in 1991 and then about 6 weeks with him in April and May of 1992. The month of May we (Bruce, Andrew and myself) were in Australia. Interestingly enough, we left LA International airport the 3rd day of the LA Riots. Was odd seeing all those plumes of smoke from burning buildings...
Attached is a picture showing Bruce, Andrew, myself (on the right with the "Indiana" hat on - I still have that hat and light jacket). The two in front are Claudia and Paul. We stayed at Paul and Claudia's house for several days before continuing on our 'journey'. BTW, the picture below has never before been previously released to the public, it is from my private album. The picture was taken in Brisbane, Australia. Even though it was May, it was actually the cooler season for Australia - hence the extra clothes we had on.

Bruce had different concepts in regards to the physics of our universe. He specifically believed that energy IS created and detroyed and does not change form. That energy can be derived from the stresses caused in space, such as those caused with magnets. Simply put, when you cause a stress in space, energy is there to be released, used, etc.

The biggest problem with the final "N" machine built, was that it was constructed with magnets that were hexagonal in shape. Simply put, the magnet disc (or pie as it was referred too) was actually a conglomeration of hexagonal shaped magnets that were glued together. The 'problem' was that at higher RPMs (which is important to achieve) the unit had vibration problems and further acceleration of the unit was not possible without the possibility of the unit tearing itself apart. The "N" machine by all means DOES produce electrical energy. EVEN IF the "N" machine does not achieve over-unity, then a very important consideration is that the "N" machine shows a barely measureable slow down when a load is applied. In the demonstration I witnessed, a rather large (about the size of my body) resitive load was applied to the generator and while it produced a measureable slow down (induction I beleive?) it was not significant and compared to coil-based generators is significant in it's efficiency (at the very least).

Today, you can purchase neodymium magnets of various shapes and, if manufactured well, should be quite balanced and higher RPMs would be achieveable - hence the test for "over-unity" is now possible - whereas it really was not when Bruce built his last prototype. The data collected with the final unit had shown the potential for over-unity. There was not reason to expect a plateau of the energy being drawn from space.

Even if you only considered the amount of energy IN space - emitted only by the sun - there exists incredible amounts to be harnessed. This isn't really even considering the possibility of zero point energy concepts.

At the time I wasn't as interested in the "N" machine as I was more interested in 'solid state' power supplies (think Moray, Radiant Energy, cold fusion, zero point, etc..). However, the "N" machine should not be thought of as a 'dead horse'. The "N" machine is doing something that other devices could do, it's just something that people can relate to easier.

Sadly, Bruce died several years later in New Zealand. I came back the US about the time Andrew and Bruce decided to go to New Zealand. I fully expected to travel to New Zealand to see them again and received several more pictures with requests to get my butt back over there. I regret not making it back sooner. I believe Andrew made his way back to the US and I'm not entirely sure what he is up too these days. I hope he too is doing well.

Best Regards,

Robert - aka Neologic

Offline tishatang

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #23 on: September 11, 2006, 08:56:19 AM »
Hi all,

I just discovered Tesla had patented a design for a unipolar generator.  May have been missed all these years because it is titled "Dynamo Electric Machine".

Look up patent #406,968.

He cleverly ganged two with reverse polarity together with steel belt, the belt eliminating the need for brushes at the outer high speed edge, with the power output only at the slow moving inner brushes.


Offline FreeEnergy

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #24 on: September 11, 2006, 09:29:39 AM »

Offline PaulLowrance

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #25 on: September 11, 2006, 04:42:22 PM »
That's amazing Tesla built such a machine so long ago. What blows me away is Tesla "free energy" electric car. It is so fascinating. Tesla's nephew, Petar Savo, swears by it.

A few links:'s_Pierce-Arrow

scroll down to "Tesla's Electric Car"

Telsa's letter about the car:

Google search:

Paul Lowrance

Offline mikestocks2006

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #26 on: November 21, 2006, 07:00:42 AM »
Well, I can't tell if one can get OU out of a setup like this but I've tried the concepts and they work.

Rotating the magnet along with the disk, in essence an statorless motor. There is no BackEMF there right?
No windings no stators for back drag. The magnet was spinning nicely, pretty fast I might add.

I also tried to get a homopolar generator going. It works! No stator there either. I had to spin it pretty high,
to get 22 millivolts out of a 18mm(0.7?) dia x 3mm thick Ni plated neo 2000 gauss craft magnet. Used a 5/64" titanium drill bit for the center hole. Heck took about 30 mins to drill. It's tough and I went slowly so the magnet didn't heat up much.
Then used a Dremmel tool to spin it, about 1/2, 2/3 full scale speed it's about 20000 rpm I'd say.

I was reading this and it was intriguing to get such high amps with no back EMF no drag. So I wanted to try it. Remember the magnet is spinning along with the pickup disk. This is NOT the same as stationary magnet and disk spinning as per Faraday

DePalma was using smaller speeds but much larger mags in OD and 2 of them, where as I used one.
?A typical machine constructed with ordinary loudspeaker ring magnets of dimensions o.d. 2-7/8", i.d. 1-1/3" and ?" thickness, two of each epoxy-cemented on either side of a conducting disc 1/8" thick, delivers 30 millivolts at 3450 rpm. The field strength of the magnets as supplied is about 1000 gauss.?

Someone mentioned the Navy, well they have some interesting things going, 6000 Amp units nice!

?Under this contract, GA will deliver a 36.5-megawatt, 120-rpm advanced design prototype motor, motor drive, and support equipment..?

Some nice size power there using homoplar designs.

Not sure if DePalma?s designs/ideas are that insignificant?..There is a lot going on here.

The main obstacle seems to be the ability to draw the huge currents the device is capable of, through the rotaing contacts. Maybe mercury wetted pickups might do the trick? Since there is no BEMF, no stator to act the drag against, maybe an OU device is possible?

Offline innovation_station

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #27 on: February 14, 2007, 06:43:53 AM »
hello there is a new liquid superconductor that will do the job fine liquid a room temp

Offline kentoot

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #28 on: February 15, 2007, 03:23:11 AM »
Higher voltage for the faraday disk possible ???

If we replace the solid metal disc with a "spiral coil" instead, would it generate more voltage (less current) ?? please see picture 1. The center end of the spiral coil connects to the metal shaft, while the outer end connects to the metal ring.

The number of spiral turns could be somehow related to the voltage output. I guess we can also use a circular PCB with spiral trace pattern instead of a wire coil, that is if not much current is extracted.

Then this spiral coil would be sandwiched between 2 disc magnets, and rotate them all together (no stator). Voltage output is between the shaft and the metal ring. Please see picture 2.

What do you guys think ? would this work ? Sorry, I want to try to build one, but now on extreeeemly limited budget. ;D  So for now just an idea.

Offline Gearhead

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Re: Homopolar Generators (N-Machine) by Bruce de Palma
« Reply #29 on: February 15, 2007, 05:12:54 AM »

I have a generator that looks almost like the one in your drawing.  It has two huge  speaker magnets with a winding between.  My winding loops from near the shaft past one magnet around the top edge and back around  toward the shaft next to the other magnet.  I had hoped to increase the voltage this way.  It didn't work.  The voltage remained the same.
Perhaps a spiral winding will work.