Muller Dynamo

[khabe]

AWG 36   is 0.127 mm, square area is 0.0127 mm2,    136 ohm per 100 m ( I think that 100m per coil have been spent),
There are 7 strands, means 136/7 ... appr. 20 ohm.
7 * 0.0127 mm2 = 0.0889 mm2 total  ... means something like 0.25mm solid wire what is able for 6...7 amps in common (low turn) motor,
cheers,
khabe


AWG 32 = 0.202 mm , 0.032 mm2, and  538 ohm per km ... if you coil has 300 ohm then there is 0.55 km of wire 

[romerouk]

I don't understand why people are finding difficult to understand the type of wire I used.
I posted the link to my source of wires many times before.
Below is the source I bought the wire from, and the reference too:

http://wires.co.uk/acatalog/st_wire.html

7 X 0.125MM SOLDERABLE STRAND EN.Cu = 0.875mm
Ref: ST01250007-500

[romerouk]

Parts I have ordered so far for the new build.

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=280544165606&ssPageName=STRK:MEWNX:IT

http://cgi.ebay.co.uk/ROUND-BRIGHT-MILD-STEEL-BAR-30mm-DIA-x-500mm-LONG-EN1A-/160559436733?_trksid=p5197.m263&_trkparms=algo%3DSIC%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%252BDDSIC%26otn%3D10%26pmod%3D200483819019%252B270303908644%252B280671794575%26po%3DLVI%26ps%3D63%26clkid%3D9015277603306153476
I got it 30mm diameter so I can put it on my lathe and cut it to make sure it fits perfect on the bearings and SPROCKET CARRIERS.

https://www.hkcm.de/product_info.php?hkcm=engineering&products_id=7381&mwst=on&des=off&dna=0&fav=&adia0=&idia0=&hig0=&amass=&bmass=&hig1=&arad=&irad=&hig2=&wink=
I bought 16 and I will have them 2 togheter to make the same 8 in total.

Bearings I already have

http://www.plasticonline.co.uk/acrylic-sheets-discs/acrylic-discs/black-acrylic-discs/10mm-black/10mm-black-acrylic-disc-300mm-dia-/prod_274.html?notice=1
I bought 3 so I can glue them together to make 3cm thick.

Mosfets are going to be used now, not sure what type yet. I have about 50 irfz44 but that is the last to worry.
Mosfets drivers - I have about 8 TC4422

Cores and coils are going to be built here. Not ordered yet but I bought parts here before.
http://www.falconacoustics.co.uk/audio-inductors-ferrite-air-core-iron-dust.html

people can also buy existing stock coils just to use the cores, check different types and u get different cores.

More to come...

[infringer]

This is why I am trying to compile a list for you so you can eliminate these types of redundant questions by saying look at this list.

Here is a list of everything and where to get it.

I am trying to help lessen the burden of these questions I see you are slowly getting upset with the repeated questions it happens in every thread takes a lots of patience to deal with it.

I think you should have Made this list a long time ago I know I would have.

Name and type of part
How many you need
Link for online purchase on where to buy it.

Otherwise you will continue to have these questions.

I suggest that you do this for your second build! It will have people replicating your device very fast!

And it will save you a lot of time answering repeat questions! It is everyones goal here to prove your device works!

[hartiberlin]

Many thanks Romero for all the new infos.

Yes, a measurement of the coil resistance would be great.

What is about your peak to peak voltage on that scope shot ?

I am pondering about the function principle of your
coils-cores and magnet motion, how it can induce such a voltage envelope.

Seems it could maybe violate Lenz law due to the reversal in repolarizing the
ferrite cores, when the rotor magnet goes through the ferrite core
airgap.
Would be interesting to see the added voltage from all coils after the
full wave bridge rectifiers before the big capacitor.
(if you disconnect the the big cap and take a scopeshot there without
the DC to DC converter.... just the added voltages without a load and a
turning rotor)
Probably simular to a car alternator DC output with AC ripple  on it.

Is somebody here who works regularly with FEMM and LUA ?

I would like to see this magnetic gate simulated with it,
so we can see, how the magnetic flux changes inside the ferrite rod cores,
so we can see the induction voltage.

As EMdevices said, it is probably important to get the right
working point on the BH curve on the ferrite rod cores for maximum
efficiency.
If the ferrite rods are not remagnetized when the rotor magnet goes
through this magnetic gate, there will be no such sin^2 type spike
induction voltage.
So you have to be carefull, what disctances you choose to get the premagnetisation
right from the stator magnets ontop the ferrite cores.
ALso the washer can really play a role, as it can concentrate or block the fields into the direction
of the ferrite rods, so this has to be all very carefully adjusted.

No wonder that it took RomeroUK a full month to adjust it all for
maximum efficiency and OU operation.

Many thanks.

Regards, Stefan.