Dia. Mag. Alternator

[z.monkey]

Diamag 2,
As in 2 Phase (180 degrees)...
This one was a bit more challenging in design, fabrication, and assembly.
I have a small mill at work which was invaluable for the inductor slots.
The inductors have iron core this time.  Also increase the strength of
the frame assembly, moved up to #10 hardware, and used a thick wall
aluminum tubing that I had to tap out.  So the spacers act as nuts, or
standoffs, and increase the rigidity.  I had some trouble with 2 different
sized magnets and the shaft spacing.  The two Automotoring magnets
are 5/8" long, and the Driver (Center) magnet is 3/4" long.  So I had to
make some customer spacers to keep the bearings seated.  I have to
mount and wire the DMA2, then we can test...

[z.monkey]

Its an improvement.  I got 2.08 Volts AC this time loaded with a 10 watt bulb...
I used the same wire, 26 gauge magnet wire.  I think its a little large.
I'm gonna try rewinding the coils with 30 gauge wire and give it another test...
The small scale of the of the cores doesn't give me enough room to put
the necessary windings in there.  I need to measure the current and that
should give me an idea of what we can expect when we can squish bigger
coils in there.  Invention is a slow process, but here I think I have made good
progress, I more that doubled the voltage this time...

[z.monkey]

@Mk1, I'm gonna incorporate your idea...

I like the idea of attraction canceling.  Also the iron is a flux conduit.
But, I want a super compact size.  So I am adding blocks between the magnets
and also on the ends.  This is a two phase system, and there are three magnets,
so altogether we need 4 blocks, in a radial arrangement.  The end plates keep
everything suspended with nice, tight clearances...

These are the Diamag 3 end plates.  The new core blocks are 1/2 inch square,
the last cores (Diamag2) were 3/16 inch square.  I reoriented the structural
hardware so that I can maximize my coil space.  This change makes it possible
to put eight times as many windings on the new cores.  So, roundabout 2 VAC
on the last attempt and looking for around 16 VAC on this attempt...

I was more critical about dimensional tolerances on this one.  It took me a full
day to draw this one, and another day to etch the dimensions into the metal.
Then today it took around 6 hours in the machine shop to fabricate.  So, 3 days
for 16 VAC?  ForkYeah!

[Mk1]

@Z


Nice !

I personally would use a e core and modifies it one layer at a time to fit the magnets even tying to make the hole round .

http://www.isomatic.co.uk/ecoretransformers.htm

find a old laminate layer transformer ...


But keep the good work !    

[z.monkey]

Mk1,

I have been thinking about using a closed magnetic loop system...

But there are a couple of caveats.  I need to incorporate industrial
bearings, and eventually there will be another two phases perpendicular
to the existing two...

Need Mo Betta Toolz...