Muller Dynamo

[Dave45]

http://www.magnetal.se/ProductsPMB.html

[fleubis]

magnetic bearing ...
http://www.youtube.com/watch?v=2R4QQmCY4JU

2 coil /24v = 230v

http://www.youtube.com/watch?v=hQnvMNWK9mk

Sure would be nice to get some pricing on those mag bearings for say a 1/2" shaft ........

[konehead]

Hey MT
The IRF840 mosfet is an NPN type, not a PNP type
make sure your 501 hall effect will match up with it I dont know if it will or not

the 4421 driver works good with that IRF840 mosfet...heres how to hook it up going by the pin numbers:

1: postiive power in (say 9V battery)
2: 10K resistor to #3 leg of hall effect
3: leave blank
4: ground
5: ground
6 and 7 combined : 20ohm resistor going to GATE of mosfet
8: positive power in

halleffect:
leg #1 is its positive power feed (same 9V battery or whatever you want to use but dont go over 18V)
leg #2 is ground and it shares ground with ground of 4421 driver and the power feed too (9V battery or whatever)
leg #3 connects to pin#2 of 4221 driver through that 10K resistor
Also you will need a 22K resistor across leg #1 and leg#3  of halleffect too

1/4 watt size resistors work good

Optional is a  35V 4.7uf DC type cap across the driver's pos and neg, and also paralell this with a .1uf non-polarized cap too to protect the driver a bit better....

BE sure to connect ground of 4421 driver to the SOURCE lead of mosfet

put a 10K resistor across the gate and source of the 840 mosfet too, to make sure it turns off OK

[MT]

@konehead

Thanks a lot for fast reponse! I tried to draw it, is this how you meant it?
Anyways since I would need to order the 4421 anyway I better order directly the TIP PNP transistor that everybody uses and circuit is much simpler.

Also the driver 4421 is not easy to buy here in nederlands. I'm suprised conrad shop does not have it.

kind regards,
MT

[aircore]

<sup>I think we really should calm down now,
    RomeroUK from May 5 release of his unit so far, Many people tried a variety of methods, But: no one reproduction successfully.
    RomeroUK revealed to us in accordance with the data, Should be very detailed, He explains that he provides is complete data. RomeroUK did not say“I also keep the details of the key did not tell you”， Of course: He totally has the right to say so. But: He did not say, He clearly shows: He told us the complete data.
    If he provided the data is complete, We are so many people reproduction, At least there should be a person's success, But, in fact: We do not have a success!

    What does this mean?
    ----- RomeroUK device is really doubtful authenticity!
    We now use the“coil short”, Also used the“Bi-wire coil”，Also used many other means of，But we do not get good results, Of course, this is normal, Because the RM did not explain his use of these methods, From his video where he can not see the use of these methods. So our efforts are in vain.

Next, how do you think we should? There continues to possible?

We really had deified RomeroUK.</sup>