Muller Dynamo

[i_ron]

I personally feel that hall effect switching is not the best way to fire the drive coils on this motor . For one thing , there are bound to be loads of stray magnetic fields in this device . This is a field of which I know very little . I think the answer is an opto coupler or opto isolator whatever the correct name is . So basically it is an LED and a photo transistor or similar . All we need is a cardboard disk  with holes in it mounted on the same shaft as the rotor  . Ok it will need a small battery initially to drive the switching . The big advantage is total control of pulse width and timing , and can be reprogrammed simply by making a new disk . Can anyone suggest a SIMPLE circuit for this , preferably using the same TIP42c transistor as before .

Neppy,

I usually go that route myself. But Halls are more efficient, mA wise. The average slotted opto can use 10 to 20 mA, times as many as you are using.

Whereas the hall sensor is one or two mA.

One has a rough pulse width range with the distance between the sensor and magnet and the dia of the magnet used. With a 1/4 inch magnet, .153 gap @400 RPM  on a 3.7 dia wheel, one has a 'about' a 5 mS pulse width.

If you check my shoot out between the TIP43 and a IRF3205 fet the fet is better. The published TIP circuit is crap. It is poorly designed. stay away. The TIP can easily put out 2 amps OR MORE on the base pin and the Hall will comfortably handle 20 mA. It is not rocket science. [With the load on the bottom of the transistor, as is standard practice, shorting the base to ground can flow 17 amps through the ammeter] Yet when you put the proper base series resistor in place the circuit doesn't work... yeck, run, as fast as yur little feets will carry you.

The fet works best, especially when used with a good gate driver. What you will find with the two series coils being driven from a FET with the built in body diode will be interesting...

I am using the TC4421 in the 5 pin TO-220 package (it was cheaper) if you wonder why it looks like two fets in the picture...

Ron

[e2matrix]

I found the timing of this interesting and fascinating to even see this on the main page of cnn.com today.  I wonder if the people that messed with Romero will be visiting this rather high profile guy.  He's got a bunch of unpublished Michael Jackson photo's he's going to sell to finance his 'overunity motor' !!  Article:
http://www.cnn.com/2011/SHOWBIZ/celebrity.news.gossip/05/14/michael.jackson.photos/index.html?hpt=C2

"Reginald Garcia just rediscovered his March 1978 photos of the Jackson 5
The images show Michael Jackson in an "awkward teenage stage," a collector says
Garcia is selling the photos to raise money for an energy-efficient motor invention
His "self-generating" motor creates more electricity than it uses, Garcia claims

Los Angeles (CNN) -- A Los Angeles inventor who photographed Michael Jackson 33 years ago hopes those images will now help launch an electric motor he claims could solve the world's energy problems.

Reginald Garcia will use cash from the sale of 130 unpublished Jackson photos to fund testing of the motor, which he claims generates more electricity than it uses. Garcia is in the process of getting the photos appraised and prepared for sale.

The photos show a 19-year-old Jackson and his brothers during a video shoot at a Hollywood studio in March 1978, before he began changing his appearance with surgery.

The Afro hair style and 1970s clothing show "a rare glance" of Jackson in an "awkward teenage stage," an image that he personally tried to bury in later years, according to a collector who sold photographs to the singer.

"If it was an image he didn't like, he was more likely to buy them than if they were images he did like," said Keya Morgan. "Were he alive now, I would definitely go to him and I'm sure he would want to buy them."

With Jackson gone, Morgan's Keya Gallery is buying the image copyrights and helping Reginald Garcia sell the original slides, prints and contact sheets that have been forgotten on his shelf for decades.

Garcia pulled the box of photos out of his closet last month when he was looking for ways to finance testing of his "self-generating" motor, Garcia said in a CNN interview this week.

"He was the greatest guy you could ever talk to," Garcia said of his day with Jackson.

Garcia was a student at California Tech and a freelance photographer when a friend of his sister's, who worked for CBS Records, asked him to take pictures of the Jacksons at Gower Studios in Hollywood, he said.

The color photos show the Jackson 5 dressed in blue tuxedos, singing on a soundstage.

The black-and-white images were taken during breaks in the video shoot, Garcia said.

"I sat him in front of a mirror and shot some photos, and I said 'act like you're reading a letter like you just got from your girl,'" he said. The result was a photo showing Jackson and his reflection in a dressing room mirror. Garcia said he only recently realized it echoes the singer's later hit "Man in the Mirror."

Garcia and business partner David Marohnic brought his photos and the prototype of his invention to CNN's Los Angeles bureau to demonstrate the engine and talk about their plans.

"What we're essentially looking for is trying to take the photos that Reggie took of Michael Jackson, his legacy, use those funds to try to take our prototype to the market and ultimately clean up the environment and use less greenhouse gases as a result of a motor that's very highly efficient," Mahronic said.

The motor buzzed as two voltage meters measured the energy going in and the power flowing out, back to the battery.

"It's generating more energy recharging the battery than it actually draws from the battery," Marohnic said.

Garcia reconfigured the brushes and rewound the copper in a standard motor "so it captures the negative electromagnetic field as it collapses, sends energy to a capacitor and recharges the battery," he said.

The sale of the Jackson photographs will allow them "to certify that the prototype does everything that we say it's going to do," Marohnic said.

"It's written in the stars," Garcia said. "We have a destiny of a greener earth, a door opening today that should lead us to this clean earth." "

[Magluvin]

That's impressive Mags!  What specific bearing is that?

Thanks e

I dont have the specs as it was a bit ago that I did this. But I have the rotor in front of me and my micrometer. ;]

inner dia  reads 7.9mm   outer dia  13.9mm  plus a flanged lip for leveling 15.2mm   thickness  3.7mm

You can choose a bearing that fits your needs.

I used 2, top and bottom for axial support.

All of my plexi parts are hand made. Jigsaw with fine cut laminate blades. Cordless drill starting with very small bit for pilot and unibit to finish.   

RC Hobbies  has a large selection used for rc cars.

This is the rotor Im using for this project.

I had made it for my magnet motor design that I had made an incredible mistake on. My new setup for it is much larger and corrected for mistakes. Still working on it in the background. ;]

http://www.overunity.com/index.php?topic=9103.msg239047#msg239047

Maybe some day soon to finish.

Mags

[poynt99]

Impressive work guys!

I'm confident you'll soon have some important insights.

.99

[conradelektro]

I would need some ideas how to fix a bearing to the center of a Plexiglas disk:

Sometimes I see in nice builds (e.g. in Lasersaber's latest Muller Generator replication) that a bearing has been fitted to the middle of a disk.

I always have problems when I try this.

So, master builders, how does one fit a bearing to the center of a disk?

When I do it, the bearing always slips off eventually. In case a glue is used, which one?

Greetings, Conrad