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yx630514
02-04-2010, 11:25 AM
In this excellent forum to seriously study a lot of Bedini motor information, do not understand why you can not use a strong magnetic force neodymium magnet, but was chosen the weak magnetic ceramic magnet? What is the reason for this choice?

Neodymium magnets and ceramic magnet used the main parameters of indicators is as follows:

.........................Remanence****Max Energy Product****Coercive Force
..............................(Br)................ ..(BH) Max......................(iHc)
........................-------------------------------------------------------
.............................Gauss................ ...KJ/m3........................KA/m
........................-------------------------------------------------------
NdFeB magnets........12000....................275....... ..................>955
------------------------------------------------------------------------
ceramic magnets.......3800.....................26......... ...................300
------------------------------------------------------------------------

Which parameter determines the Bedini motor does not choose to use Neodymium magnets? Instead choose to use ceramic magnets is more reasonable? If simply because of NdFeB magnetic force is too strong, then can use the scaled-down size neodymium magnets?

The following is a provider of mail-order Web site Beddini suite, but also to sell neodymium magnets, I really do not understand: the east that can not be used neodymium magnets, neodymium magnets can be used on the west, how to choose? You help me?

Truth In Heart CREDIT CARD ORDERING CENTER (http://rpmgt.org/order.html#NEO)


Thanks!

citfta
02-04-2010, 11:50 AM
The type of magnet you choose depends on what you are trying to do. If you are building the SSG or simplified school girl circuit for charging and rejuvenating batteries you want the weaker magnets. In the SSG the magnetic field is only used to trigger the transistor. It is not used for generating power. If you use a strong magnet it will saturate the trigger winding and the SSG will not perform well. If you are building the window motor you want strong magnets so you will have strong torque. That is why Rick sells both kinds of magnets. If you need more information there are a couple of threads here about the SSG and a couple more about the window motor.


Hope this helps, Carroll

Sephiroth
02-04-2010, 11:57 AM
Citfta has pretty much covered it :)

Neos are fine if you are using air core, or perhaps met glass (geussing). But for any standard ferrite core material, being exposed to the ridiculously strong field of a neo will saturate the core and turn it into a permanent magnet that prevents the field from collapsing efficiently.

As citfta said... on the ssg the magnets are just for triggering ;)

theremart
02-04-2010, 12:01 PM
In this excellent forum to seriously study a lot of Bedini motor information, do not understand why you can not use a strong magnetic force neodymium magnet, but was chosen the weak magnetic ceramic magnet? What is the reason for this choice?

Neodymium magnets and ceramic magnet used the main parameters of indicators is as follows:

.........................Remanence****Max Energy Product****Coercive Force
..............................(Br)................ ..(BH) Max......................(iHc)
........................-------------------------------------------------------
.............................Gauss................ ...KJ/m3........................KA/m
........................-------------------------------------------------------
NdFeB magnets........12000....................275....... ..................>955
------------------------------------------------------------------------
ceramic magnets.......3800.....................26......... ...................300
------------------------------------------------------------------------

Which parameter determines the Bedini motor does not choose to use Neodymium magnets? Instead choose to use ceramic magnets is more reasonable? If simply because of NdFeB magnetic force is too strong, then can use the scaled-down size neodymium magnets?

The following is a provider of mail-order Web site Beddini suite, but also to sell neodymium magnets, I really do not understand: the east that can not be used neodymium magnets, neodymium magnets can be used on the west, how to choose? You help me?

Truth In Heart CREDIT CARD ORDERING CENTER (http://rpmgt.org/order.html#NEO)


Thanks!

I think you need to look at the context of where it is not recommended. For beginners neos are not what you want on the school girl motor if you are trying to step people thru the process of building the SSG. If you notice in the advance groups they do use neos like on the window motors.

You have to learn tricks with the neo. As Bedini states, they do saturate the trigger winding, and can make the timing on the triggering tricky. You can over come this with optos, reed switches or other means to improve the triggering, but this is better not for a newbie.

I always work against the rules myself, and I went with neos and ceramics right off just to test the difference myself. Both work, both do the job, but... if you were in charge of a forum and instead of fighting a group of newbies explaining the exact right place to put the reed switch, and why the coils should not be so close, I may think that I would push the newbies to the ceramics myself.

Another big factor is the amount of drag when used with iron the neos have. Yes, you can change the core material to something that has less drag even remove the core, and it does work, but.... again if you are trying to teach a concept, it is better to start all on the same playing field.

I can see why you would want to start with the bicycle wheel, it is common to all, and if you set a standard for the build, then you can help them out because you are all talking the same language. I believe the goal of the Yahoo group for newbies was to establish the working concept.

These are my guesses as to why neos are not recommended. There may be other reasons like the shape of the magnetic field.

An another factor may be how cheap the ceramics are as compared to neos, you can get more people building these things if you are using cheaper materials.

These are my best guesses as to why, I love working with neos because of how strong they are, I hate working with neos because of how strong they are. :)

baroutologos
02-04-2010, 01:04 PM
Agree fully with Sephiroth.
If you study and play at least for a year with your SSG you realize magnets are not essential at all for a SSG circuit to work. They procure only the triggering, despite the enormous para-philology developed by Bedini regarding scalar souths, magnetic current, core precharging etc etc.

Apart from triggering of course, magnets provide a minor mechanical energy output. (that solid state do not have)

yx630514
02-04-2010, 07:33 PM
Thank citfta, Sephiroth, theremart, baroutologos appropriate advice:

Bedini School Girl Motor and other forms of monopole experiments I have done, now are preparing to replicate the window motor, then I can now use neodymium magnets?

But I see many replicate of the window motor is still used in ceramic magnets, why? Because it is cheaper?

If are using Neodymium magnets, magnet size do reduce the need for appropriate?

attachment figure is the introduction of neodymium magnets volume decrease after the hint.

Sephiroth
02-04-2010, 08:30 PM
Thank citfta, Sephiroth, theremart, baroutologos appropriate advice:

Bedini School Girl Motor and other forms of monopole experiments I have done, now are preparing to replicate the window motor, then I can now use neodymium magnets?

But I see many replicate of the window motor is still used in ceramic magnets, why? Because it is cheaper?

If are using Neodymium magnets, magnet size do reduce the need for appropriate?

attachment figure is the introduction of neodymium magnets volume decrease after the hint.

I can give you a bit of information that might help you decide between the two :) The weaker the magnets you use, the FASTER the motor will run. The stronger the magnets you use, the SLOWER it will run.

However torque is the other way around. Stronger magnets will give you more torque at low rpm than weak magnets.

Think of magnet strength as gears on a bike. Normally a bike has two sets of gears. one on the pedals, and one on the back wheel, right?

The strength of the magnets on the rotor is one of your gears, the other set of gears is the inductance of your stator coils. The stronger the magnet, (or the more turns you have on the coil) the LOWER the gear. The weaker the magnet (or the lower the turns on the coil), the HIGHER the gear.

This is one aspect of impedance matching :)

ps : if I were to choose between the images you posted, I would go with the last one. You want the poles to be as close together as possible, so I would recommend using flatter magnets with their edges touching. This is for both ceramics and neos with the window motors.

area46241
02-04-2010, 08:57 PM
Hello forum members I have been kicking around the Bedini circuit for some time and I was currious why is the bifilar coil is wound with two different sizes of wire? I have three sizes on huge spools but have been reluctant to use them. the first is thinner than human hair. the second is more stout about hair size and the other is very thick around say .030 of an inch. Can a bifilar be wound with the same size wire and still work? :thinking:

Sephiroth
02-04-2010, 09:06 PM
Hello forum members I have been kicking around the Bedini circuit for some time and I was currious why is the bifilar coil is wound with two different sizes of wire? I have three sizes on huge spools but have been reluctant to use them. the first is thinner than human hair. the second is more stout about hair size and the other is very thick around say .030 of an inch. Can a bifilar be wound with the same size wire and still work? :thinking:

It will work but it is a bit of a waste... in part of my "how to" videos I show why a thinner gauge wire is used for the trigger coil

YouTube - How to Build a Bedini Motor ... Part 2 (http://www.youtube.com/watch?v=mOGjLDU2lX8#t=2m10s)

ewizard
02-04-2010, 09:41 PM
One other detail that might be of interest. I picked this info up from some magnet healing devices being discussed in a book. Neo's are stronger but have less 'reach'. Ceramics may be weaker close up but their field of reach extends further than a Neo magnet. I'm not at all sure why or how that works - maybe the shape of the field being created. It might be something along the lines of a beam of light from a reflector - big reflector with a small bulb throws further than a small reflector with a big bulb. Maybe the ceramic focuses the field to throw further with less overall power.

sucahyo
02-05-2010, 12:59 AM
One other detail that might be of interest. I picked this info up from some magnet healing devices being discussed in a book. Neo's are stronger but have less 'reach'. Ceramics may be weaker close up but their field of reach extends further than a Neo magnet. I'm not at all sure why or how that works - maybe the shape of the field being created. It might be something along the lines of a beam of light from a reflector - big reflector with a small bulb throws further than a small reflector with a big bulb. Maybe the ceramic focuses the field to throw further with less overall power.Lol, and for all this time I thought that caused by size... because I have thin neo which it's field/reach is considerably smaller than my speaker magnet, and this neo is a lot stronger. A test with CRT monitor or TV should show it. A big car speaker magnet can give gauss effect up to one meter away... Never have Neo big/thick enough to compare though.

Maybe because a strong magnet will do intern flux flowing more. If we attach neo to iron thicker than the neo, it will practically have no stickyness left after the iron.

Matthew Jones
02-05-2010, 01:23 AM
Seph wrote...Neos are fine if you are using air core, or perhaps met glass (geussing). But for any standard ferrite core material, being exposed to the ridiculously strong field of a neo will saturate the core and turn it into a permanent magnet that prevents the field from collapsing efficiently.
He also said...
However torque is the other way around. Stronger magnets will give you more torque at low rpm than weak magnets.

theremart wrote... Another big factor is the amount of drag when used with iron the neos have. Yes, you can change the core material to something that has less drag even remove the core, and it does work, but....

I don't want to pick a fight or anything and I am not suggesting to run out and try build your first monopole or whatever with neo's but I have to point out that these 3 statement are just plain wrong and without thought.

The first statement by Seph, states the strong magnetic field saturating the magnetic material in the core will prevent a proper collapse. This is wrong.
If the magnet is a North magnet saturating iron inside a opposed north wound coil, and the iron has become saturated, that would make the iron on the top of the coil a SOUTH POLE. This alone will only cause the field to collapse at a faster rate. The field may not expand as far. But this can be a plus. You can add magnets at a closer tolerance and successfully fire them.

THIS is also a free Anti Lenz effect. The neo will pull into a south charge piece of iron quicker than just iron. This is very noticeable in RPMs. A person can build a coil with copper coated welding rods as recommended in Bedinis plan and can build a like coil with pure (98%) iron welding rods. Saturate the iron core. Use the same magnets on the wheel and you will get higher speed from the saturated core. Test it.

This leads to the next statement from Seph and theremart's statement. Speed or torque is all depending on timing.
The Neo's have a firm field, ceramics have a spongy field. The neo just need to be fired sooner rather than later, quicker rather than longer. Speed and torque both at the same time, for less energy.

There is also a fact about Neo's in an Open Loop motor that no one mentions.
You always fire the magnet away after it passes the core. With a neo magnet the passing a of the magnet over the core generates energy. If all your goal is, is to tap the ground to make the current move briefly, to raise the potential, and then discharge it into the another battery, this generated energy is collectible or at least can be used to recover loss from tapping the ground.
Neo's also show a curled field effect when they are close together. The field from the north pole returning to the south is moving in a opposite direction ans the field leaving the north pole. 2 magnets side by side will have a really dense curled field. This field can also produce energy, and comes at no cost in the form of Lenz Effect.

Neo's work. They are not detriment in any way if use them correctly.

A monopole does not need to go fast or have torque, So i would agree with theremart about the financial pro's to using ceramics.

Matt

Murlin
02-05-2010, 02:32 AM
Off the top of my head I can say positively that a huge advantage of using ceramics is that you can machine dovetails for mounting, drill 'em, and...well...machine them in any shape you want.

Neos are extremely brittle and mostly plated. They omit dangerous gasses when machined and the dust can be explosive.

Do not machine on a neo unless you are a griding pro and do it before plating.

meh 002...


regards,

Murlin:peacesmiley:

area46241
02-05-2010, 05:40 AM
THANKYOU INTROVERTABRATE!!! great video
that was the video my fuzzy brain could not remember...
does the transistor need a heat sink?

Sephiroth
02-05-2010, 07:11 AM
He also said...

I don't want to pick a fight or anything and I am not suggesting to run out and try build your first monopole or whatever with neo's but I have to point out that these 3 statement are just plain wrong and without thought.

The first statement by Seph, states the strong magnetic field saturating the magnetic material in the core will prevent a proper collapse. This is wrong.
If the magnet is a North magnet saturating iron inside a opposed north wound coil, and the iron has become saturated, that would make the iron on the top of the coil a SOUTH POLE. This alone will only cause the field to collapse at a faster rate. The field may not expand as far. But this can be a plus. You can add magnets at a closer tolerance and successfully fire them.


You make a good point about the field orientation with the core so I might be wrong there ;) but I'm sticking to my guns with the second statement. You're right that timing also plays a part, but my comparison of neos and ceramics to gears is true when all other factors are equal.

@area46241 - I find a 2N3055 shouldn't heat up on an ssg as long as you keep it under 250ma per transistor...

Matthew Jones
02-05-2010, 11:50 AM
....but I'm sticking to my guns with the second statement. You're right that timing also plays a part, but my comparison of neos and ceramics to gears is true when all other factors are equal.

Ya but what did you test. 1 big block of Neo? No...NO...NO!

Many small ones side by side can give the exact same driving and generating effect as one big one, without the grab. Curled Fields :thumbsup:

Try it you'll like it I guarantee.

Matt

theremart
02-05-2010, 12:45 PM
Ya but what did you test. 1 big block of Neo? No...NO...NO!

Many small ones side by side can give the exact same driving and generating effect as one big one, without the grab. Curled Fields :thumbsup:

Try it you'll like it I guarantee.

Matt

Or double our money back ? he he he :rofl:

I must agree that size of neo is critical. The larger ones take a car tire for a wheel ;)

Matthew Jones
02-05-2010, 01:01 PM
Sure I'll double your money back, seeing as how your not paying I got nothing to loose.

Like I tried to explain above.. .When 2 strong magnets are side by side the field between them is dense in the opposite direction. This creates a skin effect on the surface of the iron. The magnetic field at the core can be fully saturated but emit opposite flux. This does not effect the saturation it only effects the attraction to the iron.
If you a bunch of small strong north magnets pointing at the iron in the core, the field emitted by the saturated iron can consist of both poles. Reducing the attraction. But it only happens at a point in which the magnets are parallel to the iron. This blocks the lock.

I have seen on several motors assemblies that if I were to use 1 magnet of a given strength the lock would be real strong. But I can use 2 or more of the same magnet side by side, and the lock all but goes away.

Take it for what its worth.

Matt

Sephiroth
02-05-2010, 03:52 PM
Sure I'll double your money back, seeing as how your not paying I got nothing to loose.

Like I tried to explain above.. .When 2 strong magnets are side by side the field between them is dense in the opposite direction. This creates a skin effect on the surface of the iron. The magnetic field at the core can be fully saturated but emit opposite flux. This does not effect the saturation it only effects the attraction to the iron.
If you a bunch of small strong north magnets pointing at the iron in the core, the field emitted by the saturated iron can consist of both poles. Reducing the attraction. But it only happens at a point in which the magnets are parallel to the iron. This blocks the lock.

I have seen on several motors assemblies that if I were to use 1 magnet of a given strength the lock would be real strong. But I can use 2 or more of the same magnet side by side, and the lock all but goes away.

Take it for what its worth.

Matt

you may be right. But I still think I'm right as well :D I can gaurentee that my description of the relationship between magnet strength (or coil inductance) is correct when all other factors are equal.

Remember we were talking about window motors so there is no core.

Sephiroth
02-05-2010, 06:13 PM
Just realised you might have thought earlier that I meant neos always have better torque than ceramics... what I said was neos have better torque at lower rpm, ie when loaded to a lower rpm. but ceramics have better torque for driving loads at higher rpm... as I said, it is similar to gearing.

Using neos will give you more force in newtons at lower rpm.

Ceramics will give you less force (in newtons) but at a higher rpm.

Either way, the Nm/s will be pretty much equal so mechanical output in watts will be the same.

When choosing between ceramics or neos, you need to consider your load before designing the motor.

Neos will usually be the best choice since you will have better magnetic coupling, and you can always lower the inductance of your stator if you want to run high rpm loads. But you might not want to lower the inductance of your stators ;) I don't :D

EDIT : and yes, if it is possible in your setup, then you can always adjust the timing of the pulses to adjust the nature of the mechanical output.

theremart
02-06-2010, 04:31 AM
Sure I'll double your money back, seeing as how your not paying I got nothing to loose.


I have seen on several motors assemblies that if I were to use 1 magnet of a given strength the lock would be real strong. But I can use 2 or more of the same magnet side by side, and the lock all but goes away.

Take it for what its worth.

Matt

Thanks for the input Matt,

So when you have these "side by side" what is the spacing, and what is the size of your neos, as grade and physical size?

I have Howard John's book on magnets, but sounds like you have a working knowledge of what it means from watching your videos.

Mart

sucahyo
02-06-2010, 04:57 AM
I found neo add drag in case there are metal nearby. On replication with core, it can be a problem if the core do not produce magnetic field long or big enough to expell neo (become drag), to produce repulsing force bigger than neo to core attraction force.

Ted Ewert
02-06-2010, 05:33 AM
Neo's will work just fine in a SSG configuration. However, you may need to make a few adjustments. You'll need a bigger coil (more turns) or a higher voltage because a neo has more force which will require more amp turns to counteract in the core. The neo will also produce much more energy in the trigger circuit, which will result in heat and higher voltages. That same energy will be induced into your drive coil, which will fry your transistor unless you have it protected. If that coil is hooked up to charge batteries it should be Ok. However, a co-wound load coil will not always protect the drive transistor from getting fried, as it tends to do with ceramic magnets.

Have fun,

Ted

Matthew Jones
02-06-2010, 12:05 PM
Thanks for the input Matt,

So when you have these "side by side" what is the spacing, and what is the size of your neos, as grade and physical size?

I have Howard John's book on magnets, but sounds like you have a working knowledge of what it means from watching your videos.

Mart

Like I said a bunch of smaller strong neo's work good. I generally use something like a 40 lbs 1/2 cube (Because I have bunch) or something close that in a cylinder. I keep them about 50% of there own width apart for this application.
I did not get that from Howard Johnson's stuff. I actually got it from Energy from the vacuum. A section about skin effects. Bedini's mostly.
Once I read it It got me thinking and subsequently, trying. It a valid method for lowering the force that iron and magnets have against each other.

It will never completely stop the lock. If it did we would not saturate the iron. But it helps alot. Simulators do not take the skin effect into consideration but they do give some signs.

Vizimag Simulation (http://www.matthewcjones.com/power/SmallNeoFlux.jpg)

You can also use this same effect for generating energy. A saturated core (Explained above) and magnets close together can produce a near perfect sign wave. Yet everything in the negative of the sign wave is produced freely with out the need for torque. The only work needs to be done is when a magnet is in position over the core of the coil.

Simulation2 (http://www.matthewcjones.com/power/SmallNeoFlux2.jpg)

Notice the density of the flux between the magnets, and its direction.

Like I said take it for what its worth.

I wouldn't use neo's with and SSG for some of the reasons Ted laid out, but thats not the only thing out there either. So saying they are bad in general for motors is just not the truth. And I had to point that out. Alot of misconceptions and no real research.

Cheers
Matt

yx630514
02-06-2010, 09:41 PM
磁铁有太多的秘密,,,,,

dambit
02-07-2010, 12:25 AM
磁铁有太多的秘密,,,,,

Sorry didn't get that, my mandarin translator is on vacation. :D

Something about magnets and how there is a lot about them we don't know.

It's been a while since I've had to read mandarin so I could be wrong.

Cheers,

Steve

stonewater
02-07-2010, 03:28 AM
simple answer on the SG it is just a trigger that is all. the AG is not a torque motor. you just want to be able to switch the tranny and allow as much of a push with as little current needed when the pole flips.

window motors are a different story altogether.

Tom C

darkwizard
02-07-2010, 04:20 AM
Neodymiun Magnets work very well on the SG with air core coil

stonewater
02-07-2010, 04:53 AM
Neodymiun Magnets work very well on the SG with air core coil

because there is no core to saturate, just like a window motor, so the repulsion needed is much less. window motors can run on 4 milliamps:)

Tom C

Matthew Jones
02-07-2010, 11:16 AM
Iron core with Neo's. John Bedini's of course but...
YouTube - baja 22 063.avi (http://www.youtube.com/watch?v=NYh8W3_EZjc)

Half bipolar switch, Hall sensor and timing wheel driven.

Matt

ray0energy
02-07-2010, 02:08 PM
Neodymiun Magnets work very well on the SG with air core coil

same here i always use neomagnets on all of my motor projects.
whit air core. but i find ferrit core work the best like Bill Muller.
becous de swhits faster than metal
i use reed, coil, and optic trigger and the last work the best

stonewater
02-09-2010, 03:25 AM
Iron core with Neo's. John Bedini's of course but...
YouTube - baja 22 063.avi (http://www.youtube.com/watch?v=NYh8W3_EZjc)

Half bipolar switch, Hall sensor and timing wheel driven.

Matt

but it is not a simple SG circuit it is a window motor circuit :thumbsup:

tecknomancer
02-10-2010, 08:31 PM
neodymium's work perfect if you space the coils far enough apart I switched to neodymium's 2 years ago and had no issues with them the VMG project (http://www.zeropointfuel.com/index.php/vmg) is neos and its the only way I have found to get enough torque to make a motor and not just a energizer but I only use 24 chips on my motor Mr Bedini uses alot more chips on his energizer, ZPF motors (http://www.youtube.com/user/zeropointfuel)all about the torque both solutions are valid and should be studied to gain a better understanding of pulse motors/energizers :thumbsup:

Sephiroth
02-10-2010, 08:36 PM
neodymium's work perfect if you space the coils far enough apart I switched to neodymium's 2 years ago and had no issues with them the VMG project (http://www.zeropointfuel.com/index.php/vmg) is neos and its the only way I have found to get enough torque to make a motor and not just a energizer but I only use 24 chips on my motor Mr Bedini uses alot more chips on his energizer, ZPF motors (http://www.youtube.com/user/zeropointfuel)all about the torque both solutions are valid and should be studied to gain a better understanding of pulse motors/energizers :thumbsup:

Technomancer, haven't you heard? Bedini motors don't have torque :rofl:
YouTube - Bedini Motors Have NO Torque! (http://www.youtube.com/watch?v=V354l__dfps)

(yes it uses neos as well ;) but with air core)

tecknomancer
02-10-2010, 09:47 PM
Technomancer, haven't you heard? Bedini motors don't have torque
YouTube - Bedini Motors Have NO Torque!

I will have some new vids soon, the VMG is now spinning 16lbs of flywheel 16 mags and a converted alternator with 12 neos magnets and 1 1/8 " cores I have used both coat hangers and welding rods both work fine I hope this will be a big year for FE :cheers:


sorry permanent magnets make it a generator not a alternator

jibbguy
02-11-2010, 01:40 AM
Actually the existence of a shaft Commutator is the technical difference between an Alternator and a Generator (although the other common usage of the word "generator" as any rotating device that produces current ignores this).

There certainly are PM Alternators.. generally more expensive that "field" ones, fitted as after-market on boats and cars, usually for higher current output (and they are more efficient, especially for slower RPM applications like wind turbines since they don't need field current).

Permanent Magnet Alternators PMA wind power wind turbines wind mills PMG Permanent Magnet generators PMA wind power turbine hydro power wind turbine (http://www.hydrogenappliances.com/powerpmas.html)

Fossil Freedom - Permanent Magnet Alternator (http://www.fossilfreedom.com/alternator-conversion.html)

Outboard motor PM-Alternator built into the flywheel (which has an interesting design with all mags facing the same pole direction, and the coils in series but wound alternately "CW" and "CCW").

continuousWave: Whaler: Reference: Permanent Magnet Alternators (http://continuouswave.com/whaler/reference/PMA.html)

tecknomancer
02-11-2010, 01:51 AM
Actually the existence of a shaft Commutator is the technical difference between an Alternator and a Generator (although the other common usage of the word "generator" as any rotating device that produces current ignores this).

There certainly are PM Alternators.. generally more expensive that "field" ones, fitted as after-market on boats and cars, usually for higher current output (and they are more efficient, especially for slower RPM applications like wind turbines since they don't need field current).

Permanent Magnet Alternators PMA wind power wind turbines wind mills PMG Permanent Magnet generators PMA wind power turbine hydro power wind turbine (http://www.hydrogenappliances.com/powerpmas.html)

Fossil Freedom - Permanent Magnet Alternator (http://www.fossilfreedom.com/alternator-conversion.html)

Outboard motor PM-Alternator built into the flywheel (which has an interesting design with all mags facing the same pole direction, and the coils in series but wound alternately "CW" and "CCW").

continuousWave: Whaler: Reference: Permanent Magnet Alternators (http://continuouswave.com/whaler/reference/PMA.html)

thanks for the links I stand corrected :thinking:

sunboy
02-11-2011, 01:25 AM
Window motor select the neodymium magnet efficiency will be higher, but the stronger the higher the efficiency of magnetic!